Wired Horseback Archery Timing gates

This is a wired version of the horseback archery timing gates. This time using a printed circuit card to make the design simple.

The processor used the Easy Button library to detect triggers on either gate with a denounce. A call back I used to count the triggers. Once we have triggers from both gates we calculate the time. In this way the gates will work in either direction, left to right or right to left.

in this case I used very cheap IR sensors from AliExpres. They seem to work well, but could be replace by a more expensive sensor or just a button.

The power supply is a 3v Lopo battery charged by UBS.

You can order the PCB direct from https://aisler.net I have made the design public and the link is in the parts list. I tried to label everything for you on the stencil.

A couple of different LCD displays are included in the code. Just comment out the library that you want.

The software has a basic serial menu so you can change some basic settings like the time out duration and the number of triggers to set off the run. Horses have four legs. Enter a number greater than 5 to see the menu.

PCB

Case

Sensors