NguyễnH10

I already did it then i try to burn ic 8051 bu your hex file to test if its working or not. But its not working sir :(

what about like that way sir???

Goodmorning sir, This is the way i put the photodiode and IR led. i'm not sure if it's ok or not.... could you please check it for me? thank you!!!

Good morning Sir,Now i can understand about that. but how can i connect the IR in front of PD??? Can u pls take a picture about that for me??? thank you so much sir!!!