It can be programmed using the propretary WinEMP software and PC interface, or event it has some DIP Switch that can be used to program the device. Unluckily it does not come with a UART interface. But it features a “machine tester” I/O interface we can use to track the inserted coins.
The solution uses an ATmega8 microcontroller. The UART to USB adapter chip is the Silab CP2102, attached to a microUsb port.
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