Raspberry Pi Pico AutoHotkey Streamdeck / Keyboard with LEDs

This is the GitHub repository for the project: https://buildcomics.com/3d-printing/a-microsoft-teams-adventure/
You will also find the "instructions" there!

Current state

Not able to get a HID Control request to the Device using the "control_leds.ahk" autohotkey script. Time to signal for help: https://www.autohotkey.com/boards/viewtopic.php?t=89209\

Models

Find all the models for the Keyboard here: https://www.prusaprinters.org/prints/64087-streamdeck-for-autohotkey

Bill Of Materials (BOM)

• 1 x Raspberry Pi pico
• 4 x cherry mx (silent red RGB used, but most should work)
• The models (see above) 3d Printed

Optional parts for LEDS:

• 4 x 5mm RGB led common cathode
• 4 x 68 Ohm 1/4w resistor
• 4 x 15 Ohm 1/4w resistor
• 4 x 39 Ohm 1/4w resistor

Wiring

(Optional) RGB Led Wiring

I used one common cathode RGB LED 5mm wired with resistors. The led pinout goes as follows, counted from pin 1 as being the pin closest to the flat in the bottom of the LED (Note, some RGB LEDS are wired Red, GND, Green, Blue)!:\

1. Pin 1:RED, 68 ohm ==> GPIO 5
2. Pin 2:CC, ==> GND
3. Pin 3:BLUE, 15 ohm ==> GPIO 6
4. Pin 4:GREEN, 39 ohm ==> GPIO 7 ###Switch wiring The switches are wired one side to ground and the other to a pin. The exact pins are as defined in the pin definitions main.c, these are the defaults, but change at will:

#define BUTTON_NUMBER 4
#define BTN_1_GPIO 4
#define BTN_2_GPIO 8
#define BTN_3_GPIO 10
#define BTN_4_GPIO 11
#define LED_1_RED_GPIO 2
#define LED_2_RED_GPIO 3
#define LED_3_RED_GPIO 5
#define LED_4_RED_GPIO 9
#define LED_1_GREEN_GPIO 6
#define LED_2_GREEN_GPIO 12
#define LED_3_GREEN_GPIO 14
#define LED_4_GREEN_GPIO 15
#define LED_1_BLUE_GPIO 21
#define LED_2_BLUE_GPIO 16
#define LED_3_BLUE_GPIO 22
#define LED_4_BLUE_GPIO 17

Basic installation

1. Download main.uf2 from the releases page: https://github.com/buildcomics/AHK_keyboard/releases.
2. Press the button on your raspberry pi Pico, and then connect it to your computer.
3. copy the "main.uf2" from the release page to the "RPI2" that shows up as a mass storage USB device.
4. Install autohotkey: https://www.autohotkey.com/
5. Use an AHK script to control your computer. See AHK Scripts for an example to control microsoft teams.

Still TODO

1. Find away to "feedback" the mute and camera status to the keyboard from AHK. As of now the buttons change colour when you press them, so it is (VERY) possible to "misalign" the colours and the actual microphone and camera state. You can help me out here: hathach/tinyusb#667
   https://www.autohotkey.com/boards/viewtopic.php?t=89209

Main Code

The main code is based on Tinyusb: https://github.com/hathach/tinyusb
The device mimics a standard keyboard
It sends the keys F14-F18 which can be picked up by AHK. It switches the colour of the first two buttons when pressed.

Compiling the code

If you want to change the code and nteed to compile it, do the following: Assuming you have the raspberry pi pico c SDK installed(https://github.com/raspberrypi/pico-sdk)
The following (standard) commands will create "main.uf2" that can be copied onto the raspberry pi in bootsel mode:

1. git clone [email protected]:buildcomics/AHK_keyboard.git
2. cd AHK_keyboard
3. mkdir build
4. cd build
5. cmake ..
6. make
7. Now press the button on your raspbery pi pico, connect it and copy the main.uf2 to the pico that should show up ass a mass storage device

License

MIT License

Copyright (c) 2021 buildcomics

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.