RP2040 Pro Micro: Keyboards and Small Builds

The RP2040 Pro Micro is a compact board with a dual-core RP2040 processor, 16MB flash, USB-C, and BOOT and RESET buttons. It runs MicroPython and QMK firmware, so it fits custom keyboards, macropads, and small embedded projects. The board costs $8.37.

Quick facts

Fact	Value
Processor	RP2040 dual-core Cortex-M0+ to 133 MHz
Memory	16MB flash, 264KB SRAM
USB	USB-C
Buttons	BOOT and RESET
Firmware	MicroPython, QMK, Pico SDK, Arduino IDE
Price	$8.37

What is the RP2040 Pro Micro?

The RP2040 Pro Micro is a compact development board built on the RP2040 dual-core Cortex-M0+ processor.

It carries 16MB flash and 264KB SRAM, with USB-C and BOOT and RESET buttons.

The Pro Micro pinout fits keyboard and HID projects, including custom keyboards and macropads.

What firmware runs on it?

The board runs MicroPython, QMK firmware, the Pico SDK, and the Arduino IDE RP2040 core.

QMK firmware suits custom keyboards and macropads, where each key maps in firmware.

MicroPython suits small embedded projects where you write code in Python and test it fast.

How do BOOT and RESET work?

The BOOT button enters download mode for firmware updates, and the RESET button restarts the board.

QMK firmware loads over USB in download mode, so you can flash a new key layout without extra tools.

MicroPython loads the same way, so you can test code on the board and change it fast.

What pairs with it?

The RP2040 Pro Micro pairs with small builds that need a compact USB-C board with a Pro Micro pinout.

The GPIO Breakout Kit suits Raspberry Pi prototyping: the T-Cobbler breaks every pin out to a labeled strip, and the MB-102 breadboard holds the circuit.

Kit 1 costs $10.71, and Kit 2 adds a 65-piece jumper wire bundle for $11.82.

What did we check on the bench?

We checked the listing states RP2040 dual-core Cortex-M0+ to 133 MHz, 16MB flash, USB-C, and BOOT and RESET buttons.

We counted 7 images on the RP2040 Pro Micro listing and 5 on the GPIO Breakout Kit listing.

We matched every price in this guide to the live store price on November 11, 2026.

How the options compare

Board	Processor	Flash	Wireless	USB	Price
RP2040 Pro Micro	Dual-core Cortex-M0+ to 133 MHz	16MB	None	USB-C	$8.37
ESP32 SuperMini C3	Single-core RISC-V to 160 MHz	Not stated	WiFi 4 and Bluetooth LE	USB	From $10.99

How do you start a keyboard build with it?

1. Pick the RP2040 Pro Micro for the board and check the Pro Micro pinout against your keyboard PCB.
2. Load QMK firmware over USB with the BOOT button in download mode.
3. Map each key in QMK and flash the layout to the board.
4. Test every key and the USB-C connection before you close the case.
5. Add the board to a macropad or small embedded project the same way.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

RP2040 Pro Micro Development Board, 16MB Flash, USB-C, QMK Compatible ($8.37)

RP2040 Pro Micro at $8.37. It is a compact board with a dual-core RP2040, 16MB flash, USB-C, and BOOT and RESET buttons.

Raspberry Pi GPIO Breakout Kit, 40-Pin T-Cobbler + Ribbon Cable + MB-102 Breadboard ($10.71)

Raspberry Pi GPIO Breakout Kit from $10.71. It breaks every Pi GPIO pin out to a labeled breadboard strip with a ribbon cable and an MB-102 breadboard.

Related parts: ESP32 SuperMini Development Board, C3 / C6 / S3 / H2 + Expansion Boards, WiFi + Bluetooth: ESP32 SuperMini, a compact board in C3, C6, S3, and H2 versions for WiFi and Bluetooth projects..

Shop the full range: Raspberry Pi & Pico at Quality RC Parts. See also: Related guide.

Frequently asked questions

Does the RP2040 Pro Micro run QMK?

Yes. It runs QMK firmware, and the Pro Micro pinout fits keyboard PCBs.

Can it run MicroPython?

Yes. It runs MicroPython, the Pico SDK, and the Arduino IDE RP2040 core.

What does the GPIO Breakout Kit add?

It breaks every Raspberry Pi GPIO pin out to a labeled strip on an MB-102 breadboard, with a 40-pin ribbon cable.

Does it have WiFi?

No. The RP2040 Pro Micro has no wireless radio. For WiFi, the ESP32 SuperMini starts at $9.99.

Sources

• Raspberry Pi Pico SDK on GitHub
• QMK documentation
• SparkFun Pro Micro RP2040 hookup guide

Last updated: November 11, 2026.

Which ESP32 Board to Pick: DevKit V1, S2 Mini, or SuperMini

Pick the DevKit V1 for a full-size bench board with 30 pins, the S2 Mini for a small WiFi board with 27 pins and USB-C, and the SuperMini for the smallest builds with a C3, C6, S3, or H2 chip. The SuperMini starts at $9.99, the DevKit V1 at $11.99, and the S2 Mini at $11.16.

Quick facts

Fact	Value
DevKit V1 pins	30 pins, WROOM-32
DevKit V1 price	From $11.99
S2 Mini pins	27 digital pins
S2 Mini price	From $11.16
SuperMini chips	C3, C6, S3, H2
SuperMini price	From $9.99

What does the DevKit V1 give you?

The DevKit V1 is a 30-pin WROOM-32 board with a dual-core Tensilica Xtensa LX6 processor at 80 to 240 MHz.

It carries 4MB flash, 512KB SRAM, 2.4GHz WiFi, and Bluetooth.

Pick it for bench work where pin count and a full-size board matter more than size.

The breakout board version costs $11.99, and the Type-C version costs $15.99.

What does the S2 Mini give you?

The S2 Mini is a 25.5 by 34.3 mm board with 27 digital pins, 4MB flash, and 2MB PSRAM.

It runs WiFi on the ESP32-S2FN4R2 chip and takes USB-C power.

It fits D1 Mini shields, so it drops into D1 Mini projects and add-ons.

The 1-pack costs $11.16, the 5-pack costs $40.76, and the 10-pack costs $67.56.

What does the SuperMini give you?

The SuperMini is the smallest board here, with a C3, C6, S3, or H2 chip and matching expansion boards.

The C3 runs a single-core RISC-V core at 160 MHz with WiFi 4 and Bluetooth LE.

The S3 runs a dual-core Xtensa LX7 at 240 MHz with USB OTG, and the H2 uses Zigbee and Thread with no WiFi.

The C3 expansion board costs $9.99, the C3 SuperMini costs $10.99, and the C6, S3, and H2 SuperMini boards cost $17.99 each.

Which board fits which project?

Pick the DevKit V1 for a bench board with room for wiring and a breakout board.

Pick the S2 Mini for a small WiFi sensor or controller that fits a D1 Mini shield.

Pick the SuperMini C3 for the smallest WiFi project, the S3 for USB OTG, and the H2 for Zigbee and Thread.

What did we check on the bench?

We checked the DevKit V1 listing states 30 pins, WROOM-32, dual-core 80 to 240 MHz, 4MB flash, and 512KB SRAM.

We counted 11 images on the DevKit V1 listing, 5 on the S2 Mini listing, and 14 on the SuperMini listing.

We matched every price in this guide to the live store price on November 11, 2026.

How the options compare

Board	Chip	Wireless	Size	Price
DevKit V1	ESP32 WROOM-32 dual-core	WiFi and Bluetooth	Full-size 30-pin	From $11.99
S2 Mini	ESP32-S2FN4R2	WiFi	25.5 by 34.3 mm	From $11.16
SuperMini C3	ESP32-C3 single-core RISC-V	WiFi 4 and Bluetooth LE	Compact SuperMini	From $9.99
SuperMini S3	ESP32-S3 dual-core	WiFi and Bluetooth	Compact SuperMini	From $17.99
SuperMini H2	ESP32-H2	Zigbee and Thread, no WiFi	Compact SuperMini	From $17.99

How do you pick your ESP32 board in 4 steps?

1. List what the project needs: WiFi, Bluetooth, Zigbee, USB OTG, or pin count.
2. Match the radio first: C3, C6, or S3 for WiFi and Bluetooth, H2 for Zigbee and Thread.
3. Match the size next: DevKit V1 for the bench, S2 Mini for D1 Mini shields, SuperMini for the smallest builds.
4. Pick the board and check the listing for the chip and USB version before you order.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

ESP32 DevKit V1 Development Board, 30-Pin WROOM-32, WiFi + Bluetooth ($11.99)

ESP32 DevKit V1 from $11.99. It is a 30-pin WROOM-32 board with a dual-core processor, WiFi, and Bluetooth.

ESP32-S2 Mini Development Board, WiFi, 4MB Flash, 2MB PSRAM, USB-C ($11.16)

ESP32-S2 Mini from $11.16. It is a 25.5 by 34.3 mm WiFi board with 4MB flash, 2MB PSRAM, and USB-C.

ESP32 SuperMini Development Board, C3 / C6 / S3 / H2 + Expansion Boards, WiFi + Bluetooth ($9.99)

ESP32 SuperMini from $9.99. It is a compact board in C3, C6, S3, or H2 versions with matching expansion boards.

Related parts: RP2040 Pro Micro Development Board, 16MB Flash, USB-C, QMK Compatible: RP2040 Pro Micro, a dual-core board with 16MB flash, USB-C, and QMK support for keyboards and small builds..

Shop the full range: ESP32 & ESP8266 at Quality RC Parts. See also: Related guide.

Frequently asked questions

Does the DevKit V1 have WiFi and Bluetooth?

Yes. It carries 2.4GHz WiFi and Bluetooth on the WROOM-32 module.

Can the S2 Mini use D1 Mini shields?

Yes. It fits D1 Mini shields, so it drops into D1 Mini projects and add-ons.

Which SuperMini chip has no WiFi?

The H2. It uses Zigbee and Thread instead of WiFi. The C3, C6, and S3 carry WiFi.

How do I put a SuperMini in download mode?

Hold BOOT, press RESET, release RESET, then release BOOT. Power it by USB or through the 5V pin, not both at once.

Sources

• Espressif ESP-IDF docs
• Arduino ESP32 core
• Espressif ESP32 product page

Last updated: November 11, 2026.

HiLetgo SFM-27 95dB Alarm Buzzer: Wiring, Mounting, and Uses

The HiLetgo SFM-27 is a 95dB alarm buzzer that runs on 3 to 24V DC, 12V typical. Wire the red lead to positive and the black lead to ground, then bolt the mounting ears flat so the sound holes point out. The 5-pack costs $13.47 and suits alarms, RC builds, and electronics projects.

Quick facts

Fact	Value
Sound	95dB continuous beep
Voltage	3 to 24V DC, 12V typical
Leads	Red positive, black ground
Mounting	Two ears with screw holes, bolts flat
Pack	5 buzzers for $13.47
Use	Alarms, lost-model beepers, warning buzzers

What voltage does the SFM-27 need?

The SFM-27 runs on 3 to 24V DC, with 12V as the typical supply.

It sounds a 95dB continuous beep across that range, so it fits 5V, 12V, and 24V projects.

Wire the red lead to positive and the black lead to ground.

How do you mount the buzzer?

Bolt the buzzer flat through the screw hole in each mounting ear.

The white housing has sound holes on top, so mount it with the top clear and the sound pointing out.

Two ears hold it steady, which suits panels, cases, and RC frames.

How loud is 95dB in practice?

A 95dB beep carries across a room and a workshop, so it works as an alarm and a lost-model beeper.

The beep is continuous while power is applied, not pulsed.

Mount it clear of obstructions, because a blocked sound hole cuts the volume.

When do you pick the SFM-27 over a 5V FPV buzzer?

Pick the SFM-27 when your project runs above 5V or needs a panel-mounted alarm.

The 5V active buzzer solders to a flight controller and suits FPV quads, while the SFM-27 bolts to a case and suits alarms.

The SFM-27 5-pack costs $13.47, and the 5V buzzer 6-pack costs $7.49.

What did we check on the bench?

We checked the listing states 95dB, 3 to 24V, red and black leads, and mounting ears with screw holes.

We counted 3 images on the SFM-27 listing and 2 on the 5V buzzer listing.

We matched every price in this guide to the live store price on November 11, 2026.

How the options compare

Buzzer	Sound	Voltage	Mounting	Price
HiLetgo SFM-27 5-pack	95dB continuous	3 to 24V DC	Screw ears, bolts flat	$13.47
5V active buzzer 6-pack	Beeps when driven	5V	Solder to PDB or FC pads	$7.49
JHE20B finder	100dB alarm	5V plus backup battery	Flight controller buzzer port	$8.97

How do you wire and mount the SFM-27?

1. Pick a supply from 3 to 24V DC, 12V typical.
2. Connect the red lead to positive and the black lead to ground.
3. Bolt the mounting ears flat with the sound holes on top clear.
4. Apply power and check the continuous beep.
5. Fix the leads clear of moving parts before you close the case.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

HiLetgo SFM-27 95dB Alarm Buzzer, 3-24V, Continuous Beep, 5-Pack ($13.47)

HiLetgo SFM-27 5-pack at $13.47. It is a 95dB alarm buzzer on 3 to 24V DC with red and black wire leads and mounting ears.

5V Active Buzzer Beeper Tracker, 9 x 5.5mm, for FPV Racing Drone PDB Flight Controller, 6-Pack ($7.49)

5V active buzzer 6-pack at $7.49. It is a 9 by 5.5 mm buzzer that solders to PDB or flight controller pads.

Related parts: JHE Finder Buzzer with LED Alarm, 5V, 100-110dB (JHE20B / JHE42B / JHE42B-S): JHE finder buzzer, with a backup battery that sounds a 100 to 110dB alarm after power loss..

Shop the full range: FPV Accessories at Quality RC Parts. See also: Related guide.

Frequently asked questions

Does the SFM-27 beep on 5V?

Yes. It runs on 3 to 24V DC, so 5V is inside its range. 12V is the typical supply.

Is the beep continuous or pulsed?

Continuous. The buzzer sounds a steady 95dB beep while power is applied.

Can I use it as a lost-model beeper?

Yes. Mount it on the frame with the sound holes clear, and it works as a lost-model beeper or warning buzzer.

What is the difference from the 5V FPV buzzer?

The SFM-27 bolts to a case and runs on 3 to 24V. The 5V buzzer solders to a flight controller and runs on 5V only.

Sources

• Adafruit piezo buzzer lesson
• Arduino tone() reference
• Arduino toneMelody example

Last updated: November 11, 2026.

How to Wire a 5V Active Buzzer on an FPV Racing Drone

Solder the two pins of a 5V active buzzer to the buzzer pads on your PDB or flight controller. The board drives the buzzer output, so the buzzer sounds for lost-model beeps and arming tones. The 6-pack buzzer here measures 9 by 5.5 mm, fits tight builds, and costs $7.49 for six.

Quick facts

Fact	Value
Buzzer size	9 x 5.5 mm
Voltage	5V DC
Pack	6 buzzers for $7.49
Mounting	Two through-hole pins, solder to buzzer pads
Use	Lost-model beeps, arming and warning tones
Finder option	JHE finder, 100-110dB with backup battery, from $8.97

What does an active buzzer do on an FPV quad?

An active buzzer has its own oscillator, so it sounds when the board applies 5V to it.

It needs power only, not a tone signal, which is why it wires to the buzzer pads with two pins.

The buzzer here measures 9 by 5.5 mm and solders straight to the pads on a PDB or flight controller.

Which pads do you solder the buzzer to?

Solder the two pins to the buzzer pads on your PDB or flight controller.

The positive pin goes to the 5V pad and the negative pin goes to ground, so the board can drive the buzzer output.

Check your flight controller manual for the buzzer pad labels before you solder.

How do you test the buzzer after soldering?

Power the board and trigger the beeper from your radio, then listen for the tone.

Betaflight drives the buzzer output for lost-model beeps, arming tones, and warnings.

If the buzzer stays silent, check the solder joints and the pad polarity first.

When is a finder buzzer the better pick?

A finder buzzer keeps beeping after a crash even when the main battery is disconnected.

The JHE finder here sounds a 100 to 110dB alarm and lights a white LED 30 seconds after power loss.

Its backup battery charges while you fly, and the red LED shows it is charging.

The JHE20B costs $8.97, the JHE42B-S costs $9.09, and the JHE42B costs $9.17.

What did we check on the bench?

We checked the listing states 9 by 5.5 mm, 5V, and two through-hole pins for PDB or flight controller pads.

We counted 2 images on the 5V buzzer listing and 6 on the JHE finder listing.

We matched every price in this guide to the live store price on November 11, 2026.

How the options compare

Buzzer	Sound	Power	After a crash	Price
5V active buzzer 6-pack	Beeps when driven	5V	Stops with the battery	$7.49
JHE20B finder	100dB alarm	5V plus backup battery	Beeps 30 seconds after power loss	$8.97
JHE42B-S finder	100dB alarm	5V plus backup battery	Beeps 30 seconds after power loss	$9.09
JHE42B finder	110dB alarm	5V plus backup battery	Beeps 30 seconds after power loss	$9.17

How do you wire the buzzer in 5 steps?

1. Power off the quad and remove the battery.
2. Find the buzzer pads on your PDB or flight controller.
3. Solder the two pins to the pads, positive to 5V and negative to ground.
4. Power the board and trigger the beeper from your radio to check the tone.
5. Route the buzzer clear of props and wires, then fly and test the lost-model beep.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

5V Active Buzzer Beeper Tracker, 9 x 5.5mm, for FPV Racing Drone PDB Flight Controller, 6-Pack ($7.49)

5V active buzzer 6-pack at $7.49. It is a 9 by 5.5 mm buzzer with two through-hole pins for PDB or flight controller pads.

JHE Finder Buzzer with LED Alarm, 5V, 100-110dB (JHE20B / JHE42B / JHE42B-S) ($8.97)

JHE finder buzzer from $8.97. It works as a normal flight controller buzzer and sounds a 100 to 110dB alarm with a white LED 30 seconds after power loss.

Related parts: HiLetgo SFM-27 95dB Alarm Buzzer, 3-24V, Continuous Beep, 5-Pack: HiLetgo SFM-27 alarm buzzer, 95dB continuous beep on 3 to 24V..

Shop the full range: FPV Accessories at Quality RC Parts. See also: Related guide.

Frequently asked questions

Does an active buzzer need a signal wire?

No. An active buzzer has its own oscillator and sounds when the board applies 5V. It wires with two pins: power and ground.

Can the buzzer find a downed quad?

Yes. The board drives the buzzer output for lost-model beeps, so you can find a downed quad by ear.

What if the quad loses battery power in a crash?

A normal buzzer stops with the battery. The JHE finder keeps beeping on its backup battery 30 seconds after power loss.

Where do I mount the buzzer?

Solder it to the buzzer pads and route it clear of props and wires. The 9 by 5.5 mm size fits tight builds.

Sources

• Oscar Liang buzzer guide
• Betaflight
• Adafruit piezo buzzer lesson

Last updated: November 11, 2026.

Frame-Only FPV Builds: MOZ7 vs BabyApe II vs FoldApe4

The MOZ7 at $219.99 is a 7-inch H-frame kit for long range flight with DJI O3 or O4 Pro video. The BabyApe II at $57.99 is a 3.5-inch freestyle frame. The FoldApe4 at $62.99 is a 4-inch folding frame in the analog version. All three are frame-only, so you add motors, a stack, a camera, and a video transmitter.

Quick facts

Fact	Value
MOZ7 size	7 inch, H-frame
MOZ7 video	DJI O3 and O4 Pro compatible
MOZ7 price	$219.99
BabyApe II size	3.5 inch, 156 mm carbon fiber
BabyApe II price	$57.99
FoldApe4 size	4 inch, folding arms
FoldApe4 version	Analog
FoldApe4 price	$62.99
M3 standoffs	M3x25 aluminum, 20 pieces, $11.99

Which frame suits long range?

The MOZ7 is a 7-inch H-frame kit built for long range flight.

A 7-inch frame turns 7-inch props, which move more air per turn than 5-inch props.

It fits DJI O3 and O4 Pro video units, so pick one and mount it to the frame.

Which frame suits freestyle?

The BabyApe II is a 3.5-inch freestyle frame kit at 156 mm in carbon fiber.

It suits a builder who already owns motors, a flight controller, an ESC, a camera, and a video transmitter.

A frame-only build costs less up front when you reuse parts.

Why fold the arms?

Folding arms pack the quad small for travel and open for flight.

The FoldApe4 is a 4-inch carbon fiber frame with folding arms in the analog version.

Lock each arm open before flight and check it by hand.

What do M3 standoffs do in a frame build?

M3 standoffs space the frame plates and hold the stack at the right height.

The aluminum M3x25 spacers in this guide measure 25 mm long and come 20 to a pack.

Match the thread to your frame screws and the length to your stack height.

What did we check on the bench?

We checked the MOZ7 listing states a 7-inch H-frame kit with O3 and O4 Pro compatibility.

We checked the FoldApe4 hero image shows the analog version frame.

We counted 6 images on the MOZ7 listing, 5 on the BabyApe II listing, 8 on the FoldApe4 listing, and 6 on the standoff listing.

How the options compare

Part	Size	Type	Price
MOZ7	7 inch	H-frame kit	$219.99
BabyApe II	3.5 inch	Frame kit	$57.99
FoldApe4	4 inch	Folding frame	$62.99
M3x25 standoffs	M3x25	20 spacers	$11.99

How do you plan a frame-only build?

1. Pick the frame size first: 7 inch for long range, 3.5 or 4 inch for freestyle.
2. Pick a flight controller stack that fits the frame mount.
3. Pick motors and props for the frame size.
4. Pick a camera and video transmitter for the frame version.
5. Check prop clearance by hand before the first flight.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

GEPRC MOZ7 7 Inch H-Frame Long Range FPV Frame Kit – O3/O4 Pro Compatible ($219.99)

MOZ7 at $219.99. It is a 7-inch H-frame kit for long range flight with DJI O3 or O4 Pro video.

DarwinFPV BabyApe II 3.5 Inch Freestyle FPV Frame Kit – 156mm Carbon Fiber ($57.99)

BabyApe II frame at $57.99. It is a 156 mm carbon fiber frame kit for a 3.5-inch build.

DarwinFPV FoldApe4 4 Inch Carbon Fiber FPV Frame – Analog Version ($62.99)

FoldApe4 at $62.99. It is a 4-inch carbon fiber frame with folding arms in the analog version.

20pcs Knurled Aluminum M3x25 Standoff Spacer Pillar – Black, for FPV RC Drone Frames ($11.99)

Aluminum M3x25 spacers at $11.99 for 20 pieces. Knurled aluminum pillars for a rigid FPV stack mount.

Related parts: DarwinFPV BabyApe III 3 Inch Analog BNF Freestyle FPV Drone – ELRS 2.4GHz, 1104-5000KV Motors, F411 15A AIO: BabyApe III 3-inch analog BNF quad with 1104 motors and an F411 15A AIO board.; Angel35 3.5 Inch Freestyle FPV Drone Kit BNF 2.4GHz – 1505 3450KV Motors, F411 FC, 40A ESC, Caddx Ant Camera, 25-1000mW VTX: Angel35 BNF 3.5-inch freestyle quad with 1505 motors and a 25 to 1000mW video transmitter..

Shop the full range: FPV Drone Frames at Quality RC Parts. See also: Related guide.

Frequently asked questions

Do any of these frames include motors?

No. All three are frame kits only. Add motors, a stack, a camera, and a video transmitter.

Which video gear fits the FoldApe4?

Analog cameras and video transmitters fit it. Plan analog gear, not digital, for this version.

How many standoffs does a stack level use?

A stack level uses 4 standoffs, one at each corner. Order a kit with spares for crashes.

Can I reuse parts from a BNF quad on a frame?

Check motor size and board mount size before you move parts across. The BabyApe III is a 3-inch quad, while the BabyApe II frame is 3.5-inch.

Sources

• GEPRC
• DarwinFPV
• Oscar Liang FPV drone frames guide
• McMaster-Carr standoffs

Last updated: November 11, 2026.

PNP FPV Drones: What You Still Need After the Box

The Pavo20 Pro O4 PNP at $237.99 ships with a DJI O4 Air Unit and an ELRS 2.4GHz receiver fitted. Bind your radio and fly. The Meteor75 Pro II PNP at $252.99 ships with an ELRS receiver fitted and no video transmitter. Add your own DJI O4 Air Unit. Check the listing, because PNP boxes differ.

Quick facts

Fact	Value
Pavo20 size	2 inch, ducted
Pavo20 video	DJI O4 Air Unit fitted
Pavo20 protocol	ELRS 2.4GHz
Pavo20 price	$237.99
Meteor75 size	75 mm, 1S whoop
Meteor75 video	None fitted, add a DJI O4 Air Unit
Meteor75 protocol	ELRS 2.4GHz
Meteor75 price	$252.99

What does PNP mean on these two quads?

PNP means plug and play. The box varies by product, so check the listing before you buy.

Both quads here ship with an ELRS 2.4GHz receiver fitted, which differs from the general PNP definition.

The Oscar Liang BNF guide linked below sets out the general definitions for BNF, PNP, and RTF.

What does the Pavo20 include?

The Pavo20 Pro O4 PNP ships with a DJI O4 Air Unit and an ELRS 2.4GHz receiver fitted.

It is a 2-inch ducted cinewhoop, so it suits indoor flights and close outdoor video.

It ships from a US warehouse, with delivery in about 5 to 6 days.

What does the Meteor75 leave out?

The Meteor75 Pro II PNP ships with no video transmitter.

Add your own DJI O4 Air Unit, which carries its own camera.

It suits a pilot who already owns a DJI O4 Air Unit and wants a 75mm whoop for it.

What batteries and radio do PNP quads need?

Both quads need an ELRS 2.4GHz radio and goggles or a screen for the O4 video link.

Neither listing states batteries in the box, so order batteries with the quad.

Bind the radio to the quad and check the video feed before takeoff.

What did we check on the bench?

We checked the Pavo20 listing states a DJI O4 Air Unit and ELRS 2.4GHz.

We checked the Meteor75 listing states no video transmitter and an ELRS receiver.

We counted 9 images on the Pavo20 listing and 14 on the Meteor75 listing.

How the options compare

Quad	Size	Video	Receiver	Still need	Price
Pavo20 Pro O4	2 inch	DJI O4 included	ELRS 2.4GHz fitted	Battery, radio, goggles	$237.99
Meteor75 Pro II	75 mm	None, add DJI O4	ELRS 2.4GHz fitted	O4 unit, battery, radio, goggles	$252.99

How do you get a PNP quad in the air?

1. Fit your DJI O4 Air Unit to the Meteor75 first, if you bought it for that quad.
2. Bind the ELRS 2.4GHz receiver to your radio.
3. Charge batteries and fit one to the quad.
4. Check each prop spins free by hand.
5. Run a short hover test indoors before normal flight.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

BetaFPV Pavo20 Pro O4 PNP 2 Inch Cinewhoop – ELRS 2.4GHz ($237.99)

Pavo20 Pro O4 PNP at $237.99. It is a 2-inch cinewhoop with a DJI O4 Air Unit and an ELRS 2.4GHz receiver fitted.

BetaFPV Meteor75 Pro II PNP 75mm 1S Whoop Quadcopter – ELRS 2.4GHz (No VTX – Add Your Own DJI O4 Air Unit) ($252.99)

Meteor75 Pro II PNP at $252.99. It is a 75mm 1S whoop with an ELRS 2.4GHz receiver fitted and no video transmitter, so add your own DJI O4 Air Unit.

Related parts: BetaFPV Air75 75mm 1S BNF Whoop – ELRS 2.4GHz, C03 Camera, 4 Batteries & 6-Port Charger: Air75 BNF 75mm whoop with a C03 camera, 4 batteries, and a 6-port charger.; Angel35 3.5 Inch Freestyle FPV Drone Kit BNF 2.4GHz – 1505 3450KV Motors, F411 FC, 40A ESC, Caddx Ant Camera, 25-1000mW VTX: Angel35 BNF 3.5-inch freestyle quad with 1505 motors and a 25 to 1000mW video transmitter..

Shop the full range: FPV Kits and Drones at Quality RC Parts. See also: Related guide.

Frequently asked questions

Does the Pavo20 need a video transmitter?

No. It ships with a DJI O4 Air Unit fitted, which carries its own camera.

Does the Meteor75 need a receiver?

No. It ships with an ELRS 2.4GHz receiver fitted. It needs a DJI O4 Air Unit for video.

Can one radio fly both quads?

Yes. Both quads use ELRS 2.4GHz, so one ELRS radio binds to each quad.

Do PNP quads include batteries?

Neither listing states batteries in the box, so order batteries with the quad.

Sources

• Oscar Liang BNF, RTF and PNP guide
• DJI O4 Air Unit specs
• ExpressLRS getting started

Last updated: November 11, 2026.

Air75 vs Angel35 vs BabyApe III: Which BNF FPV Drone to Buy

The Air75 at $247.99 is a 75mm 1S whoop for indoor flight, with a C03 camera, 4 batteries, and a 6-port charger in the box. The Angel35 at $262.99 is a 3.5-inch freestyle quad with 1505 motors and a 25 to 1000mW video transmitter. The BabyApe III at $250.99 is a 3-inch analog freestyle quad with 1104 motors.

Quick facts

Fact	Value
Air75 size	75 mm, 1S whoop
Air75 video	C03 camera fitted
Air75 in the box	Quad, 4 batteries, 6-port charger
Air75 price	$247.99
Angel35 size	3.5 inch freestyle
Angel35 motors	1505 3450KV
Angel35 FC and ESC	F411, 40A ESC
Angel35 VTX	25 to 1000mW
Angel35 price	$262.99
BabyApe III size	3 inch analog freestyle
BabyApe III motors	1104 5000KV
BabyApe III board	F411 15A AIO
BabyApe III price	$250.99

Which BNF quad flies indoors?

The Air75 is a 75mm 1S whoop, so it suits indoor flight and small outdoor spaces.

It ships with a C03 camera, 4 batteries, and a 6-port charger in the box.

Bind it to an ELRS 2.4GHz radio and fly. Its small size suits rooms and hallways.

Which BNF quad suits freestyle outdoors?

The Angel35 is a 3.5-inch freestyle quad with 1505 3450KV motors.

It carries an F411 flight controller, a 40A ESC, and a 25 to 1000mW video transmitter.

A 3.5-inch quad needs open space, so fly it outdoors in a clear field.

What does analog mean on the BabyApe III?

Analog means the video link is analog, not digital.

The BabyApe III is a 3-inch analog freestyle quad with 1104 5000KV motors and an F411 15A AIO board.

Analog video gear costs less than digital gear, and it works with analog goggles.

What do all three BNF quads still need?

All three BNF quads need an ELRS 2.4GHz radio and goggles or a screen.

The Air75 includes 4 batteries and a charger. The Angel35 and BabyApe III listings do not state batteries, so order them with the quad.

Bind the radio to the quad and check the video feed before takeoff.

What did we check on the bench?

We checked the Air75 listing states 75mm, 1S, ELRS 2.4GHz, and a C03 camera.

We checked the Angel35 listing states 1505 3450KV motors and a 25 to 1000mW video transmitter.

We counted 7 images on the Air75 listing, 9 on the Angel35 listing, and 8 on the BabyApe III listing.

How the options compare

Quad	Size	Motors	Video	In the box	Price
Air75	75 mm	Not stated	C03 camera	Quad, 4 batteries, 6-port charger	$247.99
Angel35	3.5 inch	1505 3450KV	Caddx Ant, 25-1000mW VTX	Quad	$262.99
BabyApe III	3 inch	1104 5000KV	Analog	Quad	$250.99

How do you bind a BNF ELRS quad?

1. Power your ELRS radio and put it in bind mode.
2. Power the quad with a battery and put its receiver in bind mode.
3. Wait for the bind to finish, then power both off.
4. Power both on and check the radio link and video feed.
5. Run a short hover test before normal flight.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

BetaFPV Air75 75mm 1S BNF Whoop – ELRS 2.4GHz, C03 Camera, 4 Batteries & 6-Port Charger ($247.99)

Air75 BNF at $247.99. It is a 75mm 1S whoop with ELRS 2.4GHz, a C03 camera, 4 batteries, and a 6-port charger.

Angel35 3.5 Inch Freestyle FPV Drone Kit BNF 2.4GHz – 1505 3450KV Motors, F411 FC, 40A ESC, Caddx Ant Camera, 25-1000mW VTX ($262.99)

Angel35 BNF at $262.99. It is a 3.5-inch quad with 1505 3450KV motors, an F411 flight controller, a 40A ESC, and a 25 to 1000mW video transmitter.

DarwinFPV BabyApe III 3 Inch Analog BNF Freestyle FPV Drone – ELRS 2.4GHz, 1104-5000KV Motors, F411 15A AIO ($250.99)

BabyApe III Analog BNF at $250.99. It is a 3-inch quad with 1104 5000KV motors and an F411 15A AIO board.

Related parts: BetaFPV Pavo20 Pro O4 PNP 2 Inch Cinewhoop – ELRS 2.4GHz: Pavo20 Pro O4 PNP 2-inch cinewhoop with a DJI O4 Air Unit and an ELRS receiver.; BetaFPV Meteor75 Pro II PNP 75mm 1S Whoop Quadcopter – ELRS 2.4GHz (No VTX – Add Your Own DJI O4 Air Unit): Meteor75 Pro II PNP 75mm whoop with an ELRS receiver and no video transmitter..

Shop the full range: FPV Kits and Drones at Quality RC Parts. See also: Related guide.

Frequently asked questions

Do all three BNF quads use the same radio?

Yes. All three use ELRS 2.4GHz, so one ELRS radio binds to any of them.

Which BNF quad includes batteries?

The Air75 includes 4 batteries and a 6-port charger. The Angel35 and BabyApe III listings do not state batteries, so order them with the quad.

Can I fly the Angel35 indoors?

No. A 3.5-inch freestyle quad needs open space. Fly the Air75 indoors instead.

Analog or digital video on the BabyApe III?

Analog. Use analog goggles with it. The Angel35 also uses an analog Caddx Ant camera.

Sources

• BetaFPV
• ExpressLRS getting started
• Betaflight

Last updated: November 11, 2026.

BNF vs PNP vs RTF: What Each FPV Drone Label Means

BNF means the quad ships built with a receiver fitted, so you bind your own radio and fly. PNP means you check the listing, because the box varies by product. RTF means the radio comes in the box, and none of the nine new FPV products here are RTF. A frame-only kit ships as parts for you to build.

Quick facts

Fact	Value
BNF quads here	3: Air75, Angel35, BabyApe III
PNP quads here	2: Pavo20 Pro O4, Meteor75 Pro II
RTF quads here	0 of the 9 new products
Frame-only kits here	3 frames plus M3 standoffs
Radio protocol	ELRS 2.4GHz on all 5 built quads

What does BNF mean on an FPV quad?

BNF means bind and fly. The quad ships built with a radio receiver fitted.

You bind your own ELRS radio to the receiver, then fly.

The Air75 BNF includes 4 batteries and a 6-port charger. The Angel35 and BabyApe III listings do not state batteries, so order them with the quad.

What does PNP mean, and why check the listing?

PNP means plug and play. The box varies by product, so check the listing before you buy.

The Pavo20 Pro O4 PNP ships with a DJI O4 Air Unit and an ELRS 2.4GHz receiver fitted.

The Meteor75 Pro II PNP ships with an ELRS 2.4GHz receiver fitted and no video transmitter, so you add your own DJI O4 Air Unit.

What does RTF mean, and why is none of the nine RTF?

RTF means ready to fly. The radio transmitter comes in the box with the quad.

None of the nine new products include a radio, so none of them are RTF.

If you own no radio, buy a BNF quad and an ELRS radio together, then bind and fly.

What does frame-only mean?

Frame-only means the box holds a frame kit and no electronics.

The MOZ7, BabyApe II, and FoldApe4 are frame kits. You add motors, a stack, a camera, and a video transmitter.

M3 standoffs space the frame plates and hold the stack at the right height.

What did we check on the bench?

We checked each listing states its label: BNF, PNP, or frame-only.

We counted 9 images on the Pavo20 listing, 14 on the Meteor75 listing, and 7 on the Air75 listing.

We matched every price in this guide to the live store price on November 11, 2026.

How the options compare

Product	Label	Receiver	Video	In the box	Price
Air75	BNF	ELRS 2.4GHz fitted	C03 camera	Quad, 4 batteries, 6-port charger	$247.99
Angel35	BNF	ELRS 2.4GHz fitted	Caddx Ant, 25-1000mW VTX	Quad, add battery, radio, goggles	$262.99
BabyApe III	BNF	ELRS 2.4GHz fitted	Analog	Quad, add battery, radio, goggles	$250.99
Pavo20 Pro O4	PNP	ELRS 2.4GHz fitted	DJI O4 included	Quad, add battery, radio, goggles	$237.99
Meteor75 Pro II	PNP	ELRS 2.4GHz fitted	None, add DJI O4	Quad, add O4, battery, radio, goggles	$252.99
MOZ7	Frame-only	None	None	Frame kit	$219.99
BabyApe II	Frame-only	None	None	Frame kit	$57.99
FoldApe4	Frame-only	None	None	Frame kit	$62.99
M3x25 standoffs	Hardware	None	None	20 spacers	$11.99

How do you pick the right label in 4 steps?

1. List the gear you already own: radio, goggles, batteries, and a DJI O4 unit.
2. If you own an ELRS radio, pick a BNF or PNP quad and bind it.
3. If you own no radio, buy a BNF quad and an ELRS radio together.
4. If you own parts and tools, pick a frame kit and build it.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

BetaFPV Pavo20 Pro O4 PNP 2 Inch Cinewhoop – ELRS 2.4GHz ($237.99)

Pavo20 Pro O4 PNP at $237.99. It is a 2-inch cinewhoop with a DJI O4 Air Unit and an ELRS 2.4GHz receiver fitted.

BetaFPV Meteor75 Pro II PNP 75mm 1S Whoop Quadcopter – ELRS 2.4GHz (No VTX – Add Your Own DJI O4 Air Unit) ($252.99)

Meteor75 Pro II PNP at $252.99. It is a 75mm 1S whoop with an ELRS 2.4GHz receiver fitted and no video transmitter, so add your own DJI O4 Air Unit.

BetaFPV Air75 75mm 1S BNF Whoop – ELRS 2.4GHz, C03 Camera, 4 Batteries & 6-Port Charger ($247.99)

Air75 BNF at $247.99. It is a 75mm 1S whoop with ELRS 2.4GHz, a C03 camera, 4 batteries, and a 6-port charger.

Angel35 3.5 Inch Freestyle FPV Drone Kit BNF 2.4GHz – 1505 3450KV Motors, F411 FC, 40A ESC, Caddx Ant Camera, 25-1000mW VTX ($262.99)

Angel35 BNF at $262.99. It is a 3.5-inch quad with 1505 3450KV motors, an F411 flight controller, a 40A ESC, and a 25 to 1000mW video transmitter.

DarwinFPV BabyApe III 3 Inch Analog BNF Freestyle FPV Drone – ELRS 2.4GHz, 1104-5000KV Motors, F411 15A AIO ($250.99)

BabyApe III Analog BNF at $250.99. It is a 3-inch quad with 1104 5000KV motors and an F411 15A AIO board.

GEPRC MOZ7 7 Inch H-Frame Long Range FPV Frame Kit – O3/O4 Pro Compatible ($219.99)

MOZ7 at $219.99. It is a 7-inch H-frame kit for long range flight with DJI O3 or O4 Pro video.

DarwinFPV BabyApe II 3.5 Inch Freestyle FPV Frame Kit – 156mm Carbon Fiber ($57.99)

BabyApe II frame at $57.99. It is a 156 mm carbon fiber frame kit for a 3.5-inch build.

DarwinFPV FoldApe4 4 Inch Carbon Fiber FPV Frame – Analog Version ($62.99)

FoldApe4 at $62.99. It is a 4-inch carbon fiber frame with folding arms in the analog version.

20pcs Knurled Aluminum M3x25 Standoff Spacer Pillar – Black, for FPV RC Drone Frames ($11.99)

Aluminum M3x25 spacers at $11.99 for 20 pieces. Knurled aluminum pillars for a rigid FPV stack mount.

Shop the full range: FPV Kits and Drones at Quality RC Parts. See also: Related guide.

Frequently asked questions

Is BNF ready to fly out of the box?

No. BNF ships with a receiver fitted, but you add your own radio, batteries, and goggles. The Air75 comes closest, because it includes 4 batteries and a charger.

Does PNP always lack a receiver?

No. The general PNP definition leaves the receiver out, but both PNP quads here ship with an ELRS 2.4GHz receiver fitted. Check the listing for each product, because the box varies.

Why is there no RTF quad in this batch?

RTF means the radio comes in the box, and none of the nine new products include a radio. If you own no radio, buy a BNF quad and an ELRS radio together.

Can I turn a frame-only kit into a BNF quad?

Yes, by adding motors, a stack, a camera, a video transmitter, and a receiver to the frame. That is a full build, so it takes more parts and time than a BNF quad.

Sources

• Oscar Liang BNF, RTF and PNP guide
• ExpressLRS getting started
• Betaflight

Last updated: November 11, 2026.

How to Fit Anti-Collision Strobe Lights on a DJI Drone

A strobe light makes your drone visible at dusk and after dark, and the pack size decides the price. The 4-pack at $20.69 gives 8 colors and 10 modes with a wireless remote. The 1-pack at $22.49 gives 5 LEDs, 3 plus miles of visibility, and 4 hours per charge. The single 7-color strobe at $2.99 suits a tight budget.

Quick facts

Fact	Value
4-pack strobe	4 lights, remote, 8 colors, 10 modes, $20.69
1-pack strobe	5 LEDs, 3 plus miles, 160 mAh, $22.49
Single strobe	7 colors, 3W RGB LED, USB-C, $2.99
1-pack weight	5.9 g
1-pack charge	USB-C, about 1.5 hours
1-pack run time	Up to 4 hours per charge

Why fit a strobe light?

A strobe light makes your drone visible at dusk and after dark.

The 1-pack strobe lists visibility from over 3 miles away.

A visible drone is easier to track, and it warns other pilots where you fly.

4-pack, 1-pack, or single strobe?

The 4-pack at $20.69 gives 4 lights and 1 wireless remote, with 8 colors and 10 modes.

The 1-pack at $22.49 gives 5 LEDs: three white, one red, and one green.

The single strobe at $2.99 gives 7 colors and turn-signal modes, with USB-C charging.

How do you mount a strobe?

The 4-pack includes 8 rubber rings and 4 pieces of Velcro for mounting.

The 1-pack mounts with the included 3M Dual Lock pads, with no tools needed.

The single strobe mounts with the included tape or ring belts.

Does a strobe push a sub-250g drone over 250g?

The Mini 4K lists a 249 g takeoff weight on its DJI specs page.

A 5.9 g strobe on a 249 g Mini 4K pushes the total past 250 g.

Past 250 g, the FAA registration rule applies, so check the FAA registration page before you fly.

What did we check on the bench?

We matched the 8 colors and 10 modes to the 4-pack listing.

We matched the 5.9 g weight, the 160 mAh battery, and the 4 hour run time to the 1-pack listing.

We counted 3 images on the 4-pack listing, 4 on the 1-pack listing, and 1 on the single strobe listing.

How the options compare

Strobe	Pack	Colors	Power	Price
Remote 4-pack	4 lights + remote	8	USB rechargeable	$20.69
1-pack	1 light	White, red, green	160 mAh, 4 hours	$22.49
Single 7-color	1 light	7	USB-C	$2.99

How do you fit a strobe light on a DJI drone?

1. Pick the strobe for your drone weight and budget.
2. Charge the strobe over USB before the flight.
3. Mount it where it stays clear of the props and camera.
4. Turn it on and check the mode from the ground.
5. Check the total weight against the 250 g limit before you fly.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

Drone Strobe Light, Remote-Controlled, 4-Pack, 8 Colors, USB Rechargeable – Anti-Collision Lights for DJI and RC Drones ($20.69)

Drone strobe light 4-pack at $20.69. It is a remote-controlled set of 4 lights with 8 colors and 10 modes, USB rechargeable, with a wireless remote.

Drone Strobe Light, 1-Pack ($22.49)

Drone strobe light 1-pack at $22.49. It weighs 5.9 g, carries 5 LEDs, and runs up to 4 hours per charge on a 160 mAh battery.

7-Color Strobe Signal Light for Drones ($2.99)

7-color strobe signal light at $2.99. It is a 3W RGB LED strobe with 7 colors and turn-signal modes, USB-C rechargeable.

Related parts: Drone Accessories Arm Anti-Shock Fixing Buckle for DJI Flip Spare Parts Anti-Collision for Flip Propeller: Arm fixing buckle for the DJI Flip, with anti-collision fit.; Protective Bumper for DJI Avata 2 Drone Propeller Guard Anti-Collision Protectors Prop Bumper for DJI Avata 2: Protective bumper for DJI Avata 2 prop guards.; Propeller Guard For DJI Air 3/Air 3S Drone Blade Wing Protective Cage Anti-collision Cover Lightweight Blade: Propeller guard for DJI Air 3 and Air 3S drones..

Shop the full range: LEDs and Lighting at Quality RC Parts. See also: Related guide.

Frequently asked questions

Do I need to register my drone with a strobe?

A strobe adds weight. A 5.9 g strobe on a 249 g Mini 4K pushes the total past 250 g, so the FAA registration rule applies.

How long does the 1-pack strobe run?

It runs up to 4 hours per charge on its 160 mAh battery. It recharges over USB-C in about 1.5 hours.

Can I change colors in flight?

The 4-pack uses a wireless remote, so you change colors and modes from the remote. The single strobe uses its own button.

Will a strobe fit any drone?

The single strobe lists a fit for all drone models and series. Check the mount and the weight on your drone before you fly.

Sources

• FAA recreational flyers
• DJI Mini 4K specs
• FAA drone registration

Last updated: November 11, 2026.

Inrunner vs Outrunner Motors: Which Fits Your RC Car

An inrunner motor hides its magnets inside the can, so it suits the tight chassis of a 1:12 RC car. The YiKong 2838 inrunner at $65.99 spins at 4200KV for 1:12 cars. An outrunner spins its outer bell, so it suits planes and multicopters. The Readytosky 2206 outrunner at $16.99 spins at 1500KV on 2 to 3S.

Quick facts

Fact	Value
Inrunner	YiKong 2838, 4200KV, for 1:12 RC cars, $65.99
Outrunner	Readytosky 2206, 1500KV, 2-3S, $16.99
Outrunner weight	28 g
Outrunner shaft	5.5 mm
Outrunner props	9050 on 2S, 8040 on 2-3S
Bearings	Japanese NMB ball bearings on the outrunner

What is an inrunner motor?

An inrunner motor spins its magnets inside a fixed outer can.

The YiKong 2838 inrunner lists 4200KV for 1:12 RC cars.

The can stays still while the shaft spins, so the motor fits a tight car chassis.

What is an outrunner motor?

An outrunner motor spins its outer bell around a fixed inner stator.

The Readytosky 2206 outrunner lists 1500KV on 2 to 3S, at 28 g.

It spins a 9050 prop on 2S or an 8040 prop on 2 to 3S.

Why do RC cars use inrunners?

In general, an inrunner suits a car because the can encloses the spinning parts.

A car chassis has little room, and an enclosed can keeps dirt out of the spinning parts.

The YiKong 2838 lists 4200KV, which suits the small wheels and short gearing of a 1:12 car.

How do you read the size numbers?

By the standard size naming, 2838 means a 28 mm diameter and a 38 mm length.

By the same naming, 2206 means a 22 mm diameter and a 6 mm height.

Match the size to the mount in your car or plane before you order.

What did we check on the bench?

We matched the 2838 size and the 4200KV rating to the YiKong listing.

We matched the 1500KV rating, the 28 g weight, and the 5.5 mm shaft to the Readytosky listing.

We counted 7 images on the Readytosky listing and 1 image on the YiKong listing.

How the options compare

Motor	Type	KV	Size	Weight	Price
YiKong 2838	Inrunner	4200KV	2838	Not stated	$65.99
Readytosky 2206	Outrunner	1500KV	2206	28 g	$16.99

How do you pick between inrunner and outrunner?

1. Note the vehicle: a car takes an inrunner, and a plane or multicopter takes an outrunner.
2. Match the KV to your battery and gearing.
3. Match the motor size to the mount.
4. Check the shaft size against your pinion or prop.
5. Test fit the motor before you solder anything.

Parts that fit this guide

In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.

YiKong 2838 4200KV Brushless Inrunner Motor for 1:12 RC Cars ($65.99)

YiKong 2838 inrunner motor at $65.99. It is a 4200KV brushless inrunner motor for 1:12 RC cars.

Readytosky 2206 1500KV Brushless Motor, 2-3S, for Fixed-Wing and Multirotor Drones ($16.99)

Readytosky 2206 outrunner motor at $16.99. It is a 1500KV brushless outrunner for fixed-wing planes and multicopters on 2 to 3S, at 28 g.

Related parts: GForce 2206-1500KV Brushless Outrunner Motor (Threaded Shaft Version): GForce 2206 outrunner motor, threaded shaft version, 1500KV at 29 g.; GForce 2206-1500KV Brushless Outrunner Motor (O-Ring Version): GForce 2206 outrunner motor, O-ring version, 1500KV with 400 g of thrust..

Shop the full range: RC Cars and Trucks at Quality RC Parts. See also: Related guide.

Frequently asked questions

Can I fit an outrunner in an RC car?

In most cases, no. A car chassis fits an enclosed inrunner can. An outrunner bell needs clear space to spin.

Can I fit an inrunner in a plane?

Yes, some planes use inrunners with a gearbox. Most small planes use outrunners, because the bell drives the prop direct.

What does 4200KV mean?

It means the motor spins at 4200 RPM per volt with no load. Higher KV suits small wheels and short gearing.

Does the YiKong motor include a pinion?

No. The listing states the motor only. Add a pinion that fits the 2838 shaft and your car gearing.

Sources

• Brushless DC electric motor
• Oscar Liang brushless motors guide
• Castle Creations

Last updated: November 11, 2026.