Hardware registry
Boards
Every board is an open, community-tested definition. Pick one to start a project — or add your own kit.
ESP32 DevKit V1
Espressif · ESP32
The wifi+BLE workhorse. Golden path — flashes straight from the browser.
ESP32-WROOM-32
Espressif · ESP32
Bare WROOM module board. Same golden Web-Serial path as the DevKit.
Arduino Nano ESP32
Arduino · ESP32-S3
ESP32-S3 in a Nano footprint. Wifi + BLE on a breadboard.
ESP32-S3 DevKit
Espressif · ESP32-S3
AI / camera / USB-OTG. Current favorite for richer projects.
ESP32-C3 DevKit
Espressif · ESP32-C3 (RISC-V)
Cheap RISC-V with BLE5. Tiny, low cost, big install base.
Seeed XIAO ESP32C3
Seeed Studio · ESP32-C3
Thumbnail-size ESP32-C3. Popular in wearables.
Seeed XIAO ESP32S3
Seeed Studio · ESP32-S3
Tiny S3 with a camera variant. Great for vision projects.
Adafruit Feather ESP32
Adafruit · ESP32
Feather ecosystem ESP32 with LiPo charging.
ESP32-S2 Saola
Espressif · ESP32-S2
Single-core Wi-Fi + native USB. Niche but capable.
ESP32-C6 DevKit
Espressif · ESP32-C6
Wi-Fi 6 + Thread/Zigbee RISC-V. Newer, less common.
LilyGO T-Display ESP32
LilyGO · ESP32
ESP32 with a built-in 1.14" color TFT.
ESP8266 D1 Mini
WeMos · ESP8266
The classic cheap wifi board. NodeMCU's little sibling.
NodeMCU ESP8266
Espressif · ESP8266
The original $3 wifi dev board.
ESP-01
Espressif · ESP8266
Bare 2-GPIO wifi module. Needs a USB-TTL adapter to flash.
Arduino Uno R3
Arduino · ATmega328P
The board everyone starts with. Flashes over Web Serial.
Arduino Mega 2560
Arduino · ATmega2560
54 I/O pins for big projects. STK500v2 over Web Serial.
Arduino Nano
Arduino · ATmega328P
Uno on a breadboard. Old-bootloader clones use 57600 baud.
Arduino Nano Every
Arduino · ATmega4809
megaAVR Nano. Uses the JTAG2UPDI protocol.
Arduino Uno R4 WiFi
Arduino · Renesas RA4M1
Uno reborn: 32-bit Renesas + ESP32-S3 radio + LED matrix.
Arduino Leonardo
Arduino · ATmega32u4
Native-USB 32u4 — acts as a keyboard/mouse. Port hops on reset.
Arduino Pro Mini
Arduino · ATmega328P
Stripped-down Nano with no USB. Needs a USB-TTL adapter.
Raspberry Pi Pico
Raspberry Pi · RP2040
$4 dual-core with PIO. Rock-solid UF2 drag-and-drop flashing.
Raspberry Pi Pico W
Raspberry Pi · RP2040 + CYW43
$6 dual-core with wifi + BLE and PIO. UF2 drag-and-drop.
Raspberry Pi Pico 2
Raspberry Pi · RP2350
Faster RP2350 successor with more RAM. Same UF2 flow.
Seeed XIAO RP2040
Seeed Studio · RP2040
Thumbnail-size RP2040. UF2 drag-and-drop.
Arduino Nano RP2040 Connect
Arduino · RP2040
RP2040 + wifi + IMU in a Nano footprint.
Adafruit Feather RP2040
Adafruit · RP2040
Feather-format RP2040 with LiPo charging.
nRF52840-DK
Nordic · nRF52840
Proven wireless flash over Web Bluetooth (Nordic Secure DFU).
Arduino Nano 33 BLE
Arduino · nRF52840
nRF52840 + IMU in a Nano footprint. UF2 bootloader.
Adafruit Feather nRF52840
Adafruit · nRF52840
Feather BLE board. UF2 drag-and-drop.
Seeed XIAO nRF52840
Seeed Studio · nRF52840
Thumbnail-size BLE board. Drop a .uf2 onto its drive.
nRF52832 DK
Nordic · nRF52832
Smaller-flash BLE dev kit. Web Bluetooth DFU.
Arduino MKR WiFi 1010
Arduino · SAMD21
SAMD21 + wifi in the MKR form factor.
Adafruit Feather M4 Express
Adafruit · SAMD51
Fast SAMD51 Feather. UF2 drag-and-drop.
Arduino Zero
Arduino · SAMD21
The SAMD21 reference board.
Arduino Nano 33 IoT
Arduino · SAMD21
SAMD21 + wifi/BLE in a Nano footprint.
Adafruit Feather M0
Adafruit · SAMD21
SAMD21 Feather. UF2 drag-and-drop.
Seeed XIAO SAMD21
Seeed Studio · SAMD21
Thumbnail-size SAMD21.
STM32 Black Pill F411
WeAct · STM32F411
Built-in DFU bootloader → WebUSB flashable, no programmer.
STM32 Blue Pill F103C8
STMicro · STM32F103C8
Cheap classic — but stock has no USB bootloader → needs ST-Link/DFU burn first.
WeAct STM32F411
WeAct · STM32F411
DFU-capable F411 board.
Nucleo-F401RE
STMicro · STM32F401
On-board ST-Link — download the .hex and flash with STM32CubeProgrammer.
Nucleo-F103RB
STMicro · STM32F103
ST-Link only — desktop flash.
STM32F4 Discovery
STMicro · STM32F407
ST-Link only — desktop flash.
Teensy 4.0
PJRC · iMXRT1062
600MHz beast — but uses the proprietary Teensy Loader (desktop).
Teensy 4.1
PJRC · iMXRT1062
Teensy 4.0 with ethernet + more flash. Desktop loader.
Teensy 3.2
PJRC · MK20DX256
The classic Teensy. Desktop loader.
Teensy LC
PJRC · MKL26Z64
Low-cost Teensy. Desktop loader.
Own a board we don't support yet? Add a definition, test it on real hardware, and earn credits when others build on it.