This is a personal hobby project of mine that I haven’t been able to make work myself but you electronics guru’s should be able to do in your sleep.
I am trying to create an IR sensor array which detects a high-velocity bullet passing through a square frame which is set several yards away. Upon detection, it instantly triggers an Arduino pin to go high. This is much like a chronograph but I do not need it to measure velocity, just detect the passing of a bullet. Below is a crude (don't laugh) drawing of what it might look like.
I'm using a BPV10NF Photodiode and a TSAL5100 Emitting Diode and cannot get them to be sensitive enough to detect something as small as a bullet to send an Arduino pin high (or low)--even with using a rising or falling edge interrupt (or maybe I'm not writing the sketch correctly).
Requirements:
I need help with a basic schematic and parts list along with an Arduino sketch so that I may build it on my home workbench. I am willing to pay someone to help me make this project work; please PM me.