USB HID adapter with an ATSAMD21 microcontroller and IR receiver that translates incoming IR remote signals into keystrokes, mouse events, or USB serial data. Appears as a standard USB keyboard/mouse; programmable in Python.
USB Type-A plug 5V supply; Adafruit Learn says the USB pads have Ground, D+, D- and 5V power, with 5V regulated down to power the pIRkey.
USB Type-A plug ground connection; Adafruit Learn lists Ground as one of the USB pads.
USB data plus line used by the onboard ATSAMD21E18 to send and receive USB data; Adafruit Learn states D+/D- are what the onboard chip uses to send/receive data.
USB data minus line used by the onboard ATSAMD21E18 to send and receive USB data; Adafruit Learn states D+/D- are what the onboard chip uses to send/receive data.
On-board reset control; Adafruit Learn states one click resets and double-click enters bootloader mode.
Internal DotStar RGB LED data line; Adafruit Learn says CircuitPython communicates with the DotStar over board.APA102_MOSI and board.APA102_SCK.
Internal DotStar RGB LED clock line; Adafruit Learn says CircuitPython communicates with the DotStar over board.APA102_MOSI and board.APA102_SCK.
On-board lensed IR receiver module at the end of the board; Adafruit Learn states it reads IR light from remote controls.
| Pin | Type | Function | Voltage |
|---|---|---|---|
| USB A 5V | Power | USB Type-A plug 5V supply; Adafruit Learn says the USB pads have Ground, D+, D- and 5V power, with 5V regulated down to power the pIRkey. | USB 5V input per Adafruit Learn pinouts page. |
| USB A GND | Ground | USB Type-A plug ground connection; Adafruit Learn lists Ground as one of the USB pads. | 0V |
| USB A D+ | USB | USB data plus line used by the onboard ATSAMD21E18 to send and receive USB data; Adafruit Learn states D+/D- are what the onboard chip uses to send/receive data. | |
| USB A D- | USB | USB data minus line used by the onboard ATSAMD21E18 to send and receive USB data; Adafruit Learn states D+/D- are what the onboard chip uses to send/receive data. | |
| Reset button | Control | On-board reset control; Adafruit Learn states one click resets and double-click enters bootloader mode. | |
| DotStar APA102 MOSI | GPIO | Internal DotStar RGB LED data line; Adafruit Learn says CircuitPython communicates with the DotStar over board.APA102_MOSI and board.APA102_SCK. | |
| DotStar APA102 SCK | GPIO | Internal DotStar RGB LED clock line; Adafruit Learn says CircuitPython communicates with the DotStar over board.APA102_MOSI and board.APA102_SCK. | |
| Infrared receiver | GPIO | On-board lensed IR receiver module at the end of the board; Adafruit Learn states it reads IR light from remote controls. |
USB Type-A plug 5V supply; Adafruit Learn says the USB pads have Ground, D+, D- and 5V power, with 5V regulated down to power the pIRkey.
USB Type-A plug ground connection; Adafruit Learn lists Ground as one of the USB pads.
USB data plus line used by the onboard ATSAMD21E18 to send and receive USB data; Adafruit Learn states D+/D- are what the onboard chip uses to send/receive data.
USB data minus line used by the onboard ATSAMD21E18 to send and receive USB data; Adafruit Learn states D+/D- are what the onboard chip uses to send/receive data.
On-board reset control; Adafruit Learn states one click resets and double-click enters bootloader mode.
Internal DotStar RGB LED data line; Adafruit Learn says CircuitPython communicates with the DotStar over board.APA102_MOSI and board.APA102_SCK.
Internal DotStar RGB LED clock line; Adafruit Learn says CircuitPython communicates with the DotStar over board.APA102_MOSI and board.APA102_SCK.
On-board lensed IR receiver module at the end of the board; Adafruit Learn states it reads IR light from remote controls.
Single data line · I2C · 3.3 – 5 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: USB A 5V, USB A GND. Schematik maps them to your board in the app.
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