331 Abacus Lock
331 : Abacus Lock
- Author: Raunak Singh
- Description: digital lock that turns the servo on a specific sequence of switches and displays current combination entered on a LED bar
- GitHub repository
- View in Wokwi
- Clock: 0 Hz
How it works
Abacus Lock is a digital combination lock that can be used in various projects. It moves the servo only when a specific sequence of switches is set. An LED Bar displays the status of the current lock combination in binary.
How to test
Follow Wokwi design and run the .ino file using Arduino: https://wokwi.com/projects/408154128142306305
External hardware
LED, LED Bar, Servo, Arduino Nano
This project was sponsored by The MITRE Corporation and MIT/LL Beaverworks Summer Institute
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | IN1 | OUT1 | |
| 1 | IN2 | OUT2 | |
| 2 | IN3 | OUT3 | |
| 3 | IN4 | OUT4 | |
| 4 | IN5 | OUT5 | |
| 5 | IN6 | OUT6 | |
| 6 | IN7 | OUT7 | |
| 7 | IN8 | OUT8 |