Arduino powered keypad for Osu! and other rhythm games
- Individual key backlight control
- Button presses counter
- Arduino Pro Micro (or any other ATmega32U4 based board)
- 4x (mechanical) switches with keycap
- 4x LEDs 3mm (optional, requires mechanical switch)
- 5x 10k resitor (or just 1 if you don't want backlight)
- 1000μF capacitor that can handle at least 5 volts (I used a 63V 1000μF)
- 100μF capacitor that can handle at least 5 volts (I used a 25V 100μF)
| Arduino | Component |
|---|---|
| 2 | Button #1 (other pin to GRN) |
| 3 | LED #1 (through a 10K resistor, other pin to GRN) |
| 4 | Button #2 (other pin to GRN) |
| 5 | LED #2 (through a 10K resistor, other pin to GRN) |
| 6 | LED #3 (through a 10K resistor, other pin to GRN) |
| 7 | Button #3 (other pin to GRN) |
| 8 | Button #4 (other pin to GRN) |
| 9 | LED #4 (through a 10K resistor, other pin to GRN) |
| A3 | 100μF capacitor + pin through a 10K resistor, other pin to GRN |
| 5V | 1000μF capacitor + pin, other pin to GRN |
That means the keypad is waiting for a serial connection to begin.
If you don't want to use the serial connection, then press the blinking button.
First, make sure that the keypad is shut down.
Then, hold button 1 and 4, and then turn on the keypad.
A small animation should play to indicate that the reset has been triggered.
The keypad has now been reset.