wancoder / bbq20kbd_hw

BBQ20KBD

A BB Q20 Keyboard in USB/PMOD/Qwiic format!

This is the evolution of our previous BBQ10 PMOD board. We took all the feedback from that board and improved on the design in every way.

We added a Qwiic/Stemma QT connector, we added USB HID support, we changed to a Q20 keyboard, which gave us four extra buttons, and the optical trackpad that works as a USB HID Mouse.

The board uses the Raspberry Pi RP2040 MCU to poll the keyboard and trackpad and put the key press information into a FIFO.

You can use the I2C interface to read the FIFO, reconfigure the chip, and change the keyboard backlight.

In addition to that, the board also has a USB Type-C socket, and when connected to a desktop computer (Windows/Linux/MacOS), a smartphone (iOS/Android), or a SBC (Raspberry Pi, etc), it enumerates as a USB HID Keyboard and Mouse combo!

The firmware can be configured over USB using the Vendor Class interface.

The firmware can be found here: https://github.com/solderparty/i2c_puppet

The I2C interface is compatible with the old BBQ10 module, you can use the same libraries to interface this board:

• Arduino library
• CircuitPython library

For more information, visit https://bbq20kbd.solder.party