I have just been starting to get into the Arduino family of projects, there is a lot to learn here and I am certain that I have bitten off more than I can chew. I took electronics in the early 2000's, and have been a field service technician in low voltage electronics for the past 13 years. Here is my difficulty.
A local RC car racer contacted me about RC drag racing and having a large race at the Syracuse Nationals this year. We have a couple of Traxxas DTS-1 drag racing systems that kind of do what we like, but the starting tree is incredibly small and difficult to see in the daylight. I bought a bunch of 5volt relays and 60mm push buttons with 12vdc light bulbs. My mental theory at first was to simply use the input voltage of an LED on the tree to trigger a relay and light my bulbs. Simple follower circuit. Well, that did not work at first, until I found that the LEDs were a constant +VDC with negative trigger. I moved the jumpers on the triggers and 10 of my 16 bulbs now follow the LEDs. The other 6 bulbs do not work as there are multiple LEDs on the tree that are triggered at the same time and I have not found a connection point to simply "hack".
What I want to attempt is to trigger a NANO output based off of a voltage reference of an LED used as an input. I do not know if this is possible, but anybody willing to help with a sketch, would be greatly appreciated.
Thank you in advance,
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