Is it possible to make a Fitness Pull-up Counter ?

[axool]

Hello,

I am completely new to this but it interests me a lot. I would like your opinion regarding a project I would love to put in place on my free time. Actually, I am a freelance app developer and I have recently worked on a project which communicates with Bluetooth devices. While working on it, I found it interesting to "try" to build a Bluetooth device by myself, so I could maybe add it later to my app. That's why I came to this Raspberry Pi forum. In a first time, I would like to know if what I want to do could be done with a Raspberry Pi (and until now, I have no idea, to be honest).

Basically, I would like to be able to count reps on a chin up bar. The Raspberry Pi would be attached to the bar and would count every rep I do on it. A little like what you can see here : https://www.youtube.com/watch?v=qIf246nHPX8

And if it is possible, how can it be "calculated" ? How a rep could be calculated ?

Hope it doesn't sound too crazy.

Thanks!
Axel

[Gert van Loo]

The sensor in the video is an ultra sonic distance sensor, type is an HC-SR04.
If you search the Pi forum for 'SR04' you will find that it has been connected to the Pi by various people.
This seems a good link:https://github.com/fivdi/pigpio#measure ... nic-sensor to start with.

Good luck.

[fivdi]

For HC-SR04 https://github.com/fivdi/pigpio#measure ... nic-sensor could be used as Gert mentions. For the LCD https://github.com/fivdi/lcd could be used.

[dfic]

Axel did you get around doing this project? I just installed my working prototype today and it is working well. I ended up using VL53L0X laser ranging with 7 segment display. I'd be happy to see your solution

[GraemeB]

Hi,

I made the device in the YouTube video. Was a ton of fun putting it together. Here is the instructable if it helps:
https://www.instructables.com/id/Pull-Up-Counter/