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# Simon game with Pro Mini
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There is not much documentation for this project because I made exactly one
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copy of the hardware and it'll probably end there. But if anyone tries to
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replicate this, here are some hints:
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## Parts
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- powered by 4 AA batteries (3 would be enough)
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- buck module to 4V, EN pin controlled by microcontroller
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(and a button through resistor, mcu senses button for soft shutdown etc).
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Those modules can be found on aliexpress. For a replacement, you can just put
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a mosfet there or something, as long as V_sup won't go over 5V.
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- arduino pro mini (anything with atmega328p will work)
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- 4 neopixels - blinky lights (chained)
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- dual 7-seg display unit for score, CC or CA doesn't matter, easy to reverse in code
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- 4 buttons or TTP223 touch keys for user input
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- 1 photo-transistor and some resistors for ambient light sense
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- displays driven by 595 or equivalent (eg 74HC4094)
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what to connect to where can be found in `pinout.h`.
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I'll send a more detailed schematic on request, if I still find my notes.
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## Flashing
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The firmware can be flashed using the arduino bootloader (via the makefile),
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but that produces a 1s delay on startup when the bootloader waits.
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For this reason I've wiped the bootloader and flashed it directly
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with AVR Dragon using ISP programming.
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