Inspired by https://github.com/todbot/blink1 , this is a respun clone that adds a single capacitive touch pad for input.

See files under hw.

• TODO bom
• TODO schematic
• TODO pcb / 3d render

SAMD11 manual:

http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42363-SAM-D11_Datasheet.pdf

Digikey SAMD11D14A part:

https://www.digikey.com/short/jwwn7f

The PIC16F1454 (similar to the PIC16F1455 used by blink(1)) is about $0.03-$0.05 cheaper at qty=1 (SAMD11D14A vs PIC16F1454):

https://www.digikey.com/short/jwnprd

SAMD11 is a little more appealing for:

1. open toolchain (arm-none-eabi-gcc)
2. SWD debug interface
3. built in capsense hw (not a huge deal)

PIC16F1454 however doesn't require a 5v->3.3v regulator which is nice.

Another Cortex M0 with USB, this one's got an on-chip 5v->3.3v regulator and a ROM USB (CDC serial) bootloader which is appealing:

https://www.digikey.com/short/jnh91h

https://www.silabs.com/documents/public/data-sheets/efm32hg-datasheet.pdf

See files under fw.

Reference:

ASF mirror: https://github.com/avrxml/asf

• TODO samd11d usb application

See files under sw.

TODO This repo provides a python (2/3 compatible) module for interfacing the device.

Install via:

pip install sw

Whoami test via:

python3 -c "from noahp_usb_rgb import Usbrgb; print(Usbrgb().get_version())"