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Just dive in! That's how I started. For your todo there's a couple ways you can do this:1. RaceRender already does this for you.2. Setup your own infrared beacon at the track. You will learn a lot about noise, signal degradation, and power requirements this way.3. Tap into the racetracks transponder setup. Most likely will be MYLAPS setup which fall under Title 47, Part 15 (47 CFR 15) FCC Rules. At its core root, its just an RFID signal. But figuring out what spectrum it's in is a whole different animal but it is an awesome way if you want to get into ham radio.Hopefully that'll give you some ideas. Have fun!
Thanks for the feedback! I edited the instructable with a little better clarification on the intro page so people don't get discouraged when they see the requirements.I was definitely one of those people before. A close call for me was more than enough to realize I needed to make a proper jig. Hopefully others do the same because there's a lot of DIY IoT devices for sale that mess with the mains voltage and seeing their subpar designs worries me a bit.
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