An 8-bit implementation of a binary counter, that is controlled with buttons and displays its output on LED's, using Raspberry Pi and its GPIO pins.
Pinary Counter is an 8-bit binary counter - a program which counts up or down from 0 to 255 in increments of 1, using 8 bits to store and display the count. The counter will loop back and start counting again from 0 when counting up past 255, looping back to 255 instead when counting down below 0.
For user interaction, using Raspberry Pi and the GPIOZero library, Pinary Counter uses: 8 LED's to display the 8 bit counter output to the user, and 2 Buttons for the user to increment and decrement the counter. The Buttons can be held to increment and decrement the counter quicker. An extra (optional) indicator LED can also be connected, which is lit when the Pinary Counter program is running, and turned off when it stops.
== L1 L2 L3 L4 L5 L6 == L7 L8 -- 3V -- -- -- == -- -- -- 3V Pin 1
Pin 40 -- -- -- == LI == BI BD -- -- == -- -- == -- -- -- == 5V 5V
| Component | ID | Pin Number | GPIO Pin Number |
|---|---|---|---|
| Increment Button | BI | 28 | 1 |
| Decrement Button | BD | 26 | 7 |
| Indicator LED | LI | 32 | 12 |
| Bit-128 LED | L1 | 37 | 26 |
| Bit-64 LED | L2 | 35 | 19 |
| Bit-32 LED | L3 | 33 | 13 |
| Bit-16 LED | L4 | 31 | 6 |
| Bit-8 LED | L5 | 29 | 5 |
| Bit-4 LED | L6 | 27 | 0 |
| Bit-2 LED | L7 | 23 | 11 |
| Bit-1 LED | L8 | 21 | 9 |
| 3 Volts | 3V | ||
| 5 Volts | 5V | ||
| Ground | == | ||
| Not Used | -- |