
Compact Seeed Studio XIAO board based on ESP32-S3 with dual-core Xtensa processor, 2.4GHz Wi-Fi, and BLE 5.0. Arduino compatible.
VBUS power input/output. Seeed XIAO ESP32S3 wiki lists 5V as VBUS and describes it as power input/output from the USB port.
Power/data/signal ground.
Regulated 3.3V output from the onboard regulator.
GPIO and ADC input; table lists D0 as Analog, GPIO1, TOUCH1.
GPIO and ADC input; table lists D1 as Analog, GPIO2, TOUCH2.
Wi-Fi and Bluetooth on a single chip, in every shape from Espressif DevKitC to Adafruit Feathers with STEMMA QT, DFRobot FireBeetles tuned for battery life, and Seeed XIAOs under a thumbnail.
10 I/Os PLC Module - CPU Arduino Nano (Optoisolated Output) visual preview
10 I/Os Relay Module - CPU Arduino Nano (Relay Output) visual preview
Adafruit METRO 328 - Arduino Compatible - with Headers visual preview
Adafruit Metro Mini 328 V2 - Arduino-Compatible - 5V 16MHz [STEMMA QT / Qwiic] visual previewAbout 75 boards across every Arduino generation: 5V Uno/Mega/GIGA, 3.3V MKR and Portenta, plus DFRduino and Bluno compatibles. Confirm the voltage rail before stacking any shield.
Boards · Arduino boards · 76 parts
15x7 CharliePlex LED Matrix FeatherWing - Cool White visual preview
15x7 CharliePlex LED Matrix FeatherWing - Warm White visual preview
16-Ch High Current Driver Shield Kit v2 visual preview
19V 90W AC/DC Adapter for LattePanda Mu Full-Function EVA Carrier Board visual previewAbout 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.
Boards · HATs, Shields & add-ons · 272 parts
:MOVE mini MK2 buggy kit visual preview
:VIEW text32 LCD Screen for the BBC micro:bit visual preview
16-Ch Servo Driver Breakout for micro:bit, I2C visual preview
2x40 Right Angle Edge Connector for micro:bit visual previewSpecialists: Teensy for high-clock audio and USB, Adafruit SAMD boards running CircuitPython or the Arduino IDE, proper STM32 eval kits, and the micro:bit classroom ecosystem. Schematik builds target ESP32, Arduino Uno, and Pico; come here when you have a specific reason to.
Boards · Other MCU boards · 226 parts
Adafruit DVI Breakout Board for HDMI Source Devices visual preview
Adafruit DVI Sock for Pico - Works with HDMI Displays visual preview
Adafruit Feather RP2040 with DVI Output Port - Works with HDMI visual preview
Adafruit MACROPAD RP2040 Bare Bones - 3x4 Keys + Encoder + OLED visual previewThe Raspberry Pi MCU line — Pico, Pico 2, and third-party boards on the same silicon — plus a deep bench of Pico-pinout displays, loggers, and radio modules that do nothing without a Pico plugged in.
Boards · Pico & RP2040 boards · 44 parts
GPIO and ADC input; table lists D2 as Analog, GPIO3, TOUCH3.
GPIO and ADC input; table lists D3 as Analog, GPIO4, TOUCH4.
GPIO, I2C data, and ADC; table lists D4 as Analog/SDA, GPIO5, TOUCH5.
GPIO, I2C clock, and ADC; table lists D5 as Analog/SCL, GPIO6, TOUCH6.
GPIO and UART transmit; table lists D6 as TX, GPIO43.
GPIO and UART receive; table lists D7 as RX, GPIO44.
GPIO, SPI clock, and ADC; table lists D8 as Analog/SCK, GPIO7, TOUCH7.
GPIO, SPI data, and ADC; table lists D9 as Analog/MISO, GPIO8, TOUCH8.
GPIO, SPI data, and ADC; table lists D10 as Analog/MOSI, GPIO9, TOUCH9.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| 5V | power | VBUS power input/output. Seeed XIAO ESP32S3 wiki lists 5V as VBUS and describes it as power input/output from the USB port. | 5V from USB port; may be used as voltage input with external protection as described by Seeed. | |
| GND | ground | Power/data/signal ground. | 0V | |
| 3V3 | power | Regulated 3.3V output from the onboard regulator. | 3.3V output; Seeed states up to 700mA draw. | |
| D0 / GPIO1 | gpio | GPIO and ADC input; table lists D0 as Analog, GPIO1, TOUCH1. | 3.3V logic | |
| D1 / GPIO2 | gpio | GPIO and ADC input; table lists D1 as Analog, GPIO2, TOUCH2. | 3.3V logic | |
| D2 / GPIO3 | gpio | GPIO and ADC input; table lists D2 as Analog, GPIO3, TOUCH3. | 3.3V logic | |
| D3 / GPIO4 | gpio | GPIO and ADC input; table lists D3 as Analog, GPIO4, TOUCH4. | 3.3V logic | |
| D4 / SDA / GPIO5 | i2c | GPIO, I2C data, and ADC; table lists D4 as Analog/SDA, GPIO5, TOUCH5. | 3.3V logic | |
| D5 / SCL / GPIO6 | i2c | GPIO, I2C clock, and ADC; table lists D5 as Analog/SCL, GPIO6, TOUCH6. | 3.3V logic | |
| D6 / TX / GPIO43 | uart | GPIO and UART transmit; table lists D6 as TX, GPIO43. | 3.3V logic | |
| D7 / RX / GPIO44 | uart | GPIO and UART receive; table lists D7 as RX, GPIO44. | 3.3V logic | |
| D8 / SCK / GPIO7 | spi | GPIO, SPI clock, and ADC; table lists D8 as Analog/SCK, GPIO7, TOUCH7. | 3.3V logic | |
| D9 / MISO / GPIO8 | spi | GPIO, SPI data, and ADC; table lists D9 as Analog/MISO, GPIO8, TOUCH8. | 3.3V logic | |
| D10 / MOSI / GPIO9 | spi | GPIO, SPI data, and ADC; table lists D10 as Analog/MOSI, GPIO9, TOUCH9. | 3.3V logic |