How to build Slot Car Track Lap Counting Hardware!

Thanks to a subscriber, Thomas Sidener, I embarked on the journey to build my own in slot lap counting hardware to work with Race Coordinator and Faslaps! This is a pretty simple build.. just order a few thinigs from Amazon and you are on your way! It works great.... with one caveat. Here are things you will need: IR Infrared Slotted Optical Optocoupler https://www.amazon.com/dp/B08977QFK5?... ELEGOO UNO R3 Board https://www.amazon.com/dp/B01EWOE0UU?... Jumper Wire https://www.amazon.com/dp/B09FP2DBRH?... ELEGOO 4 Channel DC 5V Relay Module https://www.amazon.com/dp/B09ZQS2JRD?... Powered by Rost Coffee! Use the coupon code "TwoLines" at checkout to receive 25% off first order or first subscription. Order of $25 or more receive free shipping. Also - we offer a lifetime 20% discount on all coffee subscriptions. https://rostcoffee.com or you could buy me a coffee? www.buymeacoffee.com/twolinesslotcar #slotcars #slotcarracing #coffeeandslotcars #slotcarsforbeginners #digtital132 #digita124 #carreradigital #carreraslotcartrack #slotcarlayouts #NSRslotcars #Slotit #analogslotcars #thunderslot #flyclassic #revoslot