Digispark for password entry - Emulates a keyboard to enter predefined passwords when the sensor pad (coin) is touched
Extra components:
- Coin for touch pad function
- 1.0 MΩ resistor between sensor pad (coin) and PB2 (output pin)
- 2.2 kΩ resistor between sensor pad (coin) and PB0 (input pin) for protection against ESD damage
- 20 pF capacitor between sensor pad (coin) and GND to reduce noise
