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stinkerton18 edited this page Jan 31, 2025
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While I'm well aware USB-PD->DC cables exist, these are preset to a specific voltage. Using the same USB-PD with different devices needing different voltages means unplugging and plugging in a different cable each time. There has to be a better solution, and thanks to Adafruit, we can make it!
| Quantity | Name | Purpose | Link |
|---|---|---|---|
| 1 | Adafruit USB Type C Power Delivery Dummy | Does USB-PD heavy lifting | https://www.adafruit.com/product/5807 |
| 1 | Adafruit Monochrome 0.91" OLED Display | Provides feedback to the user | https://www.adafruit.com/product/4440 |
| 4 | Adafruit 16mm Illuminated Push Button Momentary | Used to choose which voltage you want | https://www.adafruit.com/product/1440 |
| 1 | ATmega328P based Arduino | The brains. Contains the code to control the USB-PD board and OLED screen | Your favorite source |
| 4 | 10k ohm Resistors | Pulldown resistor for each switch | Your favorite source |
| 1 | 330 Ohm Resistor | Current limiting resistor for LEDs for voltage selection | Your favorite source |