1/4 mile device, drag racing

levykrak · Joined: 10 Oct 2016 Posts: 9

Another project.
Central unit is equipped with SD card, Nextion TFT touch display, USB serial for PC connection. It controls lights tree and gate from start line and finish line. Both gates are the same, controls left and right track. They are using single parts, 5V power, IR receiver 36kHz and for comunication I used two RS485 converteres setup as sender and all are connected by 500m cable. I need only two levels 0 and 1 and everything is send to central unit to PcINT each. Another devices are, lets call them generators. I used ATTINY13 to generate 36kHz signal via IR led, somebody could ask why I didnt use ne555, because attiny works from two batteries 3V, ne555 need at least 5V.

generator

main unit

500m cable

receiver

service cars Smile