Produces a full F1 startgrid sequence.
Circuit:
- 8 ohm speaker on digital pin 2
- 5 LEDs connected to digital pins 9 -> 13, each LED grounded with a 220Ω resistor
- 'OK' pushbutton on analog pin A3 (used as digital pin) and +5V
- 'CANCEL' pushbutton on analog pin A4 (used as digital pin) and +5V
- two reed switches to measure passing cars, analog pins A1 and A2 and +5v
- LCD:
- data pins D4 -> D7 wired to digital pins 7 -> 4
- E pin wired to digital pin 8
- RS pin wired to digital pin 3
- VCC+ and
- a potentionmeter with it's middle leg connected to the LCD 4
A detailed Fritzing sketch is available in the repository.
On the LCD we have the following screens:
START -> [Y] -> COUNTDOWN -> RACE --> [Y] -> QUIT? -> [Y] -> START
| -> [N] -> RACE
--> [N] -> n/a
Developed for pure and utter fun. All code is available on Github This code is in the public domain. See LICENSE.