Bash Snippet: Luhn Algorithm

I like Bash, but it isn’t well suited for some tasks. For fun I sometimes ignore that. Occasionally people seem to find this useful. In that spirit, here is my…

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Retro-Joystick to USB Keyboard Adapter

Project Introduction I made an adapter to take classic video game controllers for Sega, Atari (2600, 7800) and Commodore (VIC20, C64, C128) and adapt them to work as a 5…

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Arduino Leonardo (ATMega32u4) USB Power Button

Project Introduction For fun I made this USB power button with an Arduino Micro/Leonardo-like board (by which I mean one using the Atmel ATMega32u4 MCU with USB controller). The project…

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Raspberry Pi RTS / CTS Flow Control

I had need of a 3.3v TTL serial interface to reprogram a device I was working on. Looking around I realized I had mostly 5v logic USB to serial adapters….

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