DIY SparkFun Pro Micro with USB-A Port

Lately I’ve been working on a project that will use an Arduino to translate signals from a wireless receiver into USB HID inputs for my computer. I had the perfect microcontroller picked out too: the SparkFun Pro Micro, which uses the Arduino-compatible ATmega32U4 and has enough I/O pins for my project and then some. There’s just one problem – the Pro Micro doesn’t have a USB-A port to plug directly into a computer! Instead it has a micro USB-B port, and requires a short cable to connect it to a PC.

Luckily for me the Pro Micro, like many of SparkFun’s designs, is open source and licensed under Creative Commons Share-alike. So I decided to dive in and modify the design to create my own version of the Pro Micro with a USB-A port!

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Back to the Future Time Circuits

The goal of this project is to build my own personal replica of the DeLorean’s “Time Circuits”, as featured in the Back to the Future movie trilogy. I’ll need to build custom time circuit displays, a custom keypad for changing the date, and screen-accurate enclosures. To make everything function, I’ll need to design and program some embedded circuits to control it all.