USB Type-A host port for sending or receiving data from an attached USB device with the MAX3421E, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
SPI MOSI signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
SPI MISO signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
SPI clock signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
SPI chip-select for the MAX3421E on the FeatherWing, also broken out near the middle of the board, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Shield
Verify supply voltage and logic levels before powering up.
Module pins: MOSI, MISO, SCK. Schematik maps them to your board in the app.
About 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.
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
10 I/Os Relay Module - CPU ESP32 (Relay Output) visual preview
Adafruit ESP32 Feather V2 w.FL Antenna - 8MB Flash + 2MB PSRAM visual preview
Adafruit ESP32-C6 Feather - STEMMA QT visual preview
Adafruit ESP32-S2 Feather - 4MB Flash + 2MB PSRAM visual previewWi-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.
Boards · ESP32 boards · 111 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
Interrupt request output from the MAX3421E USB host chip to the Feather host, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
MAX3421E general-purpose multiplexed push-pull output pin for advanced users, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Disable 5V power to the USB-A port by tying this pin to ground, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Open rear jumper; soldering it connects 5V enable to MAX3421E GPOUT0 for software control over SPI, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Reset line connected to the FeatherWing reset button and reset pin, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| USB-A | left-end | connector | USB Type-A host port for sending or receiving data from an attached USB device with the MAX3421E, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | 5V bus power from onboard 5V 1A boost supply when enabled |
| MOSI | spi | SPI MOSI signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | ||
| MISO | spi | SPI MISO signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | ||
| SCK | spi | SPI clock signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | ||
| CS | digital input | SPI chip-select for the MAX3421E on the FeatherWing, also broken out near the middle of the board, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | ||
| IRQ | digital output | Interrupt request output from the MAX3421E USB host chip to the Feather host, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | ||
| GPX | towards-centre | digital io | MAX3421E general-purpose multiplexed push-pull output pin for advanced users, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | |
| 5V Enable | towards-centre | control | Disable 5V power to the USB-A port by tying this pin to ground, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | Controls 5V USB-A bus power; active behaviour is disable when tied to GND |
| 5V Enable Jumper | back | jumper | Open rear jumper; soldering it connects 5V enable to MAX3421E GPOUT0 for software control over SPI, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts | |
| RST | top-left-button | reset | Reset line connected to the FeatherWing reset button and reset pin, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts |
Pan-Tilt HAT Kit