LI Keyfob vs ALP System

[Vortex]

Hey Vortex
Always wondered, what is the software you have used to capture the pulses?
Is it a homemade Ipad scope, with a simple IR receiver circuit connected to the 3.5mm audio jack

You're spot on. It's done on an iPad, converting an IR photodiode to the 3.5mm audio jack plug and then running an app called "Oscilloscope." Another really good one is "FFT Plot" by the same manufacturer.

Here's the app in action:



Here's the components:



and here it is put together to measure from a KGE instead of Lidar. (The mess of wires on the protoboard also includes other projects. You don't need nearly that many wires...)