How to Choose Microcontrollers for Drones and FPV Builds
Choose a drone microcontroller by weight, radio, and pins. The SuperMini fits tight frames, while the S2 Mini gives WiFi for telemetry. The RP2040 Pro Micro costs $8.37 with 16MB of flash. The ESP32-CAM costs $25.99 and adds a camera for FPV video work.
Quick facts
| Fact | Value |
|---|---|
| SuperMini | $9.99 to $17.99 by version, WiFi and Bluetooth |
| S2 Mini | $11.16, 4MB flash, 2MB PSRAM, WiFi |
| RP2040 Pro Micro | $8.37, 16MB flash, dual-core RP2040 |
| ESP32-CAM | $25.99, OV2640 camera, 4MB PSRAM |
| Nano 3.0 | $10.96, ATmega328PB, CH340C, Type-C |
| BluePill Plus | $11.48, Cortex-M3, 72MHz, 64KB flash |
| NodeMCU ESP8266 | From $11.37, built-in OLED |
Which board fits a small drone frame?
The SuperMini comes in C3, C6, S3, and H2 versions with WiFi and Bluetooth. Prices run from $9.99 to $17.99 by version.
The C3 SuperMini costs $10.99 and suits small IoT jobs. The S3 SuperMini costs $17.99 and suits camera and display work.
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.
Which board adds a camera to a drone?
The ESP32-CAM costs $25.99 with an OV2640 camera module and 4MB of PSRAM. It suits a first FPV video build.
The ESP32-S3-CAM board alone costs $11.97 with 16MB of flash and 8MB of PSRAM. Add an OV2640 camera for $23.12 in total.
Pick the OV5640 5MP camera version at $29.99 for sharper stills. Pick the OV2640 2MP version for faster video.
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 NodeMCU ESP8266 gives WiFi with a built-in 0.96 inch OLED for $11.37. It carries an ESP-12E chip with a CH340 USB-serial chip.
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 BluePill or RP2040?
The BluePill Plus gives an ARM Cortex-M3 chip at 72MHz for $11.48. It suits code that needs speed and room.
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.
How do you connect sensors to a drone board?
The S2 Mini is D1 Mini shield compatible with USB-C. That lets you stack a sensor shield on the board.
The NodeMCU shows sensor readings on its built-in OLED display. That suits bench tests with no laptop screen.
Wire each sensor to a free GPIO pin and test it on the bench first. A sensor that works on the bench works in the air.
How the options compare
| Board | Key spec | Price |
|---|---|---|
| SuperMini C3 | WiFi and Bluetooth, tiny board | $10.99 |
| SuperMini S3 | WiFi and Bluetooth, tiny board | $17.99 |
| S2 Mini, 1-pack | 4MB flash, 2MB PSRAM, WiFi, USB-C | $11.16 |
| Nano 3.0 | ATmega328PB, CH340C, Type-C | $10.96 |
| RP2040 Pro Micro | Dual-core RP2040, 16MB flash, USB-C | $8.37 |
| BluePill C8T6 | 72MHz, 64KB flash, USB-C | $11.48 |
| ESP32-CAM | OV2640 2MP, 4MB PSRAM, WiFi and Bluetooth | $25.99 |
| NodeMCU ESP8266 | ESP-12E, built-in 0.96 inch OLED | From $11.37 |
How do you fit a microcontroller on a drone?
- Pick the board by frame size: SuperMini for tight frames, S2 Mini for WiFi.
- 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.
ESP32-CAM Development Board with OV2640 Camera Module, 4MB PSRAM ($25.99)
ESP32-CAM board at $25.99. It ships with an OV2640 camera module, 4MB of PSRAM, WiFi, Bluetooth, and a TF card slot.
NodeMCU ESP8266 Development Board with 0.96″ OLED Display, ESP-12E, Micro USB ($11.37)
NodeMCU ESP8266 board at $11.37. It carries an ESP-12E chip with a built-in 0.96 inch SSD1306 OLED display.
ESP32 SuperMini Development Board, C3 / C6 / S3 / H2 + Expansion Boards, WiFi + Bluetooth ($9.99)
ESP32 SuperMini at $9.99 to $17.99 by version. It comes in C3, C6, S3, and H2 versions, each with WiFi and Bluetooth.
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: Microcontrollers and Development at Quality RC Parts. See also: Related guide.
Frequently asked questions
Which board is the smallest here?
The SuperMini in C3, C6, S3, and H2 versions. Prices run from $9.99 to $17.99 by version.
Which board adds a camera to a drone?
The ESP32-CAM at $25.99 with an OV2640 camera, or the S3-CAM board at $11.97 plus a camera.
Which board gives WiFi telemetry?
The S2 Mini at $11.16. It gives WiFi with 4MB of flash and 2MB of PSRAM.
Does the RP2040 Pro Micro have WiFi?
No WiFi radio is named in the board listing. Pick the S2 Mini when the drone needs WiFi.
Sources
- Espressif ESP32 technical reference
- Espressif Arduino-ESP32 documentation
- Arduino Servo library reference
Last updated: November 10, 2026.