Proximity sensor circuit using only 1 transistor

All the products you need can be found on https://www.utsource.net in lowest price Hello friends, today in this video I've shown a simple proximity sensor circuit using only one common transistor. Components required for this project: 1 x BC547 transistor https://www.utsource.net/itm/p/382309.html 1 x 220 ohm resistor https://www.utsource.net/itm/p/8294786.html 1 x 100 ohm resistor https://www.utsource.net/itm/p/8294784.html 1 x Infrared led 1 x Photo diode 1 x Red led If you have enjoyed this video then please like, share, comment and don't forget to subscribe. Thank you very much for watching Music in this video Learn more Listen ad-free with YouTube Premium Song Alan Walker - Force Licensed to YouTube by LatinAutor, LatinAutor - SonyATV, ASCAP, Sony ATV Publishing, U ...