How to Choose Arduino Boards for Drones and FPV Builds
Choose an Arduino board for a drone by size, weight, and radio. The Nano fits small frames, while the UNO suits bench tests. The UNO costs from $9.27, and the Nano costs $10.96. The S2 Mini gives WiFi for $11.16 when the drone needs telemetry.
Quick facts
| Fact | Value |
|---|---|
| Nano 3.0 | $10.96, ATmega328PB, CH340C, Type-C |
| UNO R3 | From $9.27, ATmega328P, 16MHz, 14 digital pins |
| BluePill Plus | $11.48, Cortex-M3, 72MHz, 64KB flash |
| S2 Mini | $11.16, 4MB flash, 2MB PSRAM, WiFi |
| RP2040 Pro Micro | $8.37, 16MB flash, dual-core RP2040 |
Which Arduino board fits a small drone?
The Nano 3.0 costs $10.96 with an ATmega328PB chip and Type-C USB. It suits small builds where a full UNO will not fit.
The UNO R3 gives 14 digital I/O pins and 6 analog inputs for $9.27. It suits bench tests where pins must stay visible.
Pick the Nano for the frame and the UNO for the bench. Both boards run the same Arduino code.
When should you pick the BluePill?
The BluePill Plus gives an ARM Cortex-M3 chip at 72MHz for $11.48. That is faster than the 16MHz ATmega328P on the UNO.
The C8T6 version gives 64KB of flash, and the CBT6 gives 128KB for $13.08. Pick the CBT6 when your sketch outgrows 64KB.
It gives USB-C and SWD debug on the board. SWD lets you step through code on the chip while it runs.
Which board adds WiFi telemetry?
The S2 Mini gives WiFi with 4MB of flash and 2MB of PSRAM for $11.16. It uses USB-C and works with MicroPython and Arduino.
The UNO and Nano give no WiFi radio. Use them for wired sensor jobs with no radio need.
Test the WiFi link at 2m from the router first. Move the drone farther only after the near link runs clean.
When should you pick the RP2040?
The RP2040 Pro Micro gives a dual-core RP2040 chip with 16MB of flash for $8.37. It suits USB and sensor jobs.
The RP2040 board listing names no WiFi radio. Use it for wired jobs, and pick the S2 Mini for WiFi.
It runs MicroPython and QMK firmware with USB-C and BOOT and RESET buttons. That suits tiny drone add-ons.
How do you drive servos from a drone board?
The Arduino Servo library drives a servo from a GPIO pin. It sends a 50 Hz signal with a 1 to 2 ms pulse to set the angle.
Power servos from a separate 5V to 6V supply, not from the board. A servo draws far more current than a board pin can give.
Join the grounds of the servo supply and the board. A missing common ground makes servos jitter and ignore commands.
How the options compare
| Board | Chip | Key spec | Price |
|---|---|---|---|
| UNO R3, Type-C | ATmega328P | 16MHz, 14 digital pins | $9.27 |
| Nano 3.0 | ATmega328PB | Type-C, small case | $10.96 |
| BluePill C8T6 | STM32F103C8T6 | 72MHz, 64KB flash, USB-C | $11.48 |
| BluePill CBT6 | STM32F103CBT6 | 72MHz, 128KB flash, USB-C | $13.08 |
| S2 Mini, 1-pack | ESP32-S2FN4R2 | 4MB flash, 2MB PSRAM, WiFi | $11.16 |
| RP2040 Pro Micro | RP2040 | Dual-core, 16MB flash, USB-C | $8.37 |
How do you fit an Arduino board on a drone?
- Pick the Nano for the frame and the UNO for the bench.
- Mount the board on the frame with standoffs or foam tape.
- Wire each sensor to a free GPIO pin.
- Power the board from a stable 5V supply on the bench first.
- Load a test sketch and check each sensor reading.
- Test the WiFi link at 2m from the router before 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 10, 2026.
UNO R3 Compatible Development Board, ATmega328P CH340G – USB / Type-C ($9.27)
UNO R3 compatible board at $9.27 to $10.64 by version. It carries an ATmega328P chip, runs at 16MHz, and gives 14 digital pins and 6 analog inputs.
Arduino Nano 3.0 Compatible Development Board, Type-C USB, ATmega328PB, CH340C ($10.96)
Arduino Nano 3.0 board at $10.96. It carries an ATmega328PB chip with a CH340C USB-serial chip and Type-C USB.
BluePill Plus STM32F103C8T6 / STM32F103CBT6 ARM Cortex-M3 Development Board, USB-C ($11.48)
BluePill Plus board at $11.48 for 64KB flash. It carries an ARM Cortex-M3 chip at 72MHz with USB-C and SWD debug.
ESP32-S2 Mini Development Board, WiFi, 4MB Flash, 2MB PSRAM, USB-C ($11.16)
ESP32-S2 Mini at $11.16 for a 1-pack. It gives 4MB of flash and 2MB of PSRAM with WiFi over USB-C.
RP2040 Pro Micro Development Board, 16MB Flash, USB-C, QMK Compatible ($8.37)
RP2040 Pro Micro at $8.37. It gives a dual-core RP2040 chip with 16MB of flash, USB-C, and BOOT and RESET buttons.
Shop the full range: Arduino-Compatible Boards at Quality RC Parts. See also: Related guide.
Frequently asked questions
Which Arduino board fits a small drone frame?
The Nano 3.0 at $10.96. It gives an ATmega328PB chip with Type-C USB in a small case.
Is the BluePill faster than the UNO?
Yes. The BluePill runs at 72MHz, while the UNO runs at 16MHz.
Which board gives WiFi telemetry?
The S2 Mini at $11.16. It gives WiFi with 4MB of flash and 2MB of PSRAM.
Can a board pin power a servo?
No. Power servos from a separate 5V to 6V supply with a common ground.
Sources
Last updated: November 10, 2026.