CrossFit Timer overview
About this project
Hi !
This project was to build a Crossfit Timer from scratch.
I had the idea during the lockdown (COVID-19) when I was doing sport at home. A Crossfit Timer is better than a phone or a computer and a real one is pretty much expensive.
Modes I did : count up, count down, interval, the possibility to set rounds and a basic clock mode.
Table of contents
Making
Softwares :
- Fusion 360
- Cura
3D Printer :
Other :
Electronic
Softwares :
- EasyEDA
- Fritzing
PCB:
Components
- Arduino nano
- Real Time Clock (RTC)
- Tactile Push Button
- Resistors
- Capacitors
- Leds SK6812
- Buzzer
- Rechargeable Battery Lipo cells
- Lipo Charger Module
- 5V DC-DC Step-Up Power Module
- Slide switch
Code
Softwares :
- Arduino IDE
Architecture
I splited the code in four parts/files
| Main code | Display | Set-up | Timer |
|---|---|---|---|
| Button functions | Leds matrix | Set-up mode functions | Count up/down/interval functions |
| Setup function | Digit and Alphabet matrix | 10 secondes countdown function | |
| Main loop | Timer display functions | Buzzer gestion | |
| Clock mode |
[Code and more details]()
Documentation
There is five buttons ( beginning from the right )
| Button | ROLE | Timer is set | Set-up mode | Timer is running | Timer is pause | Clock mode |
|---|---|---|---|---|---|---|
| First | START / PAUSE / OK | Start | Ok | Pause | Start | Nothing |
| Second | SETUP TIME | Setup mode | Change digits | Nothing | Nothing | Setup mode |
| Third | UP | Up count mode | Count up | Nothing | Nothing | Nothing |
| Fourth | DOWN | Down count mode | Count Down | Nothing | Nothing | Nothing |
| Fifth | RESET / CLOCK MODE | Nothing or after 3 sec clock mode | Nothing | Reset | Reset | After 3 sec timer mode |