Homemade retro game console following the Arduboy design with acrylic glass case and Mr.Blinky’s flash cart design that can store up to 100 games. The cost of parts to build this retro mini game console is less than USD 12.
I used the Pro micro which does not have enough pins.
So, I soldered a 0.1mm wire onto the pin D13 of the MCU directly.
At first I thought it’s impossible, as my MCU is tiny. But once I fixed the position of a wire using a tape, and put it under a magnifying glass, it is possible after a few trail.
I added head phone jack and reset button to the top, and a volume control on the side.
Plan to add a 15 pin header at the bottom to connect other types of console, e.g. joystick or dials.