pico-12vrgb-hid-controller

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pico-12vrgb-hid-controller

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4-pin RGB controller using the Pi Pico and USB HID

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// repository documentation

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# pico-12vrgb-hid-controller

A 4-channel 12V-G-R-B controller for RGB fans and LED strips using the Raspberry
Pi Pico and controlled via USB HID. Designed to be installed inside a PC case as
an alternative or addition to motherboard headers.

It implements the "Lighting and Illumination" (`0x59`) HID usage page, making
it fully compatible with the [Dynamic Lighting][] feature in Windows 11.

It also implements the "Sensors" (`0x20`) HID usage page (for a temperature
sensor) and a vendor (`0xFF00`) HID usage page for custom controls.

Note this does *not* support 3-pin addressable RGB LEDs, but uses the
semi-standard 4-pin 12V-G-R-B connector, where all devices connected to a
channel show the same color.

![The assembled pico-12vrgb-hid-controller PCB](https://raw.githubusercontent.com/bluekeyes/pico-12vrgb-hid-controller/main/img/pcb.jpg)

![The assembled PCB installed in the 3D-printed case](https://raw.githubusercontent.com/bluekeyes/pico-12vrgb-hid-controller/main/img/case.jpg)

[Dynamic Lighting]: https://support.microsoft.com/en-us/windows/control-your-dynamic-lighting-devices-in-windows-8e8f22e3-e820-476c-8f9d-9ffc7b6ffcd2

## Animations

When running in autonomous mode, the controller implements configurable
animations. Use the CLI to set the parameters or save an animation as the
default for a channel.

### Breathe

Fades a single color on and off. The fade on time, on time, fade off time, and
off time are all configurable.

https://user-images.githubusercontent.com/1745813/233868169-5f5d1403-0b08-4b99-b51f-30fe5f666057.mp4

### Fade

Fades between up to 8 different colors. The fade time and hold time are
configurable.

https://user-images.githubusercontent.com/1745813/233868393-662b7a13-106e-483d-9052-4a47977f7780.mp4

## Project Structure

This project is split into three parts:

* `hw/` contains schematics and PCB files (KiCAD)
* `fw/` contains device firmware (C)
* `cli/` contains the command-line control program (Rust)

See each directory for more details.

## Limitations

The hardware is only tested on Windows 11, using both the Dynamic Lighting
feature and the included CLI. The CLI does not support other platforms yet.

## License

MIT

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