Oh, this one is about LED bargraphs, and you know I love LEDs. In this experiment we are going to build an LED bargraph and then use that bargraph to measure how much light is hitting the photoresistor. In essence, we are going to build an LED bargraph light meter!


[am4show have=’p9;p51;p103;p108;’ guest_error=’Guest error message’ user_error=’User error message’ ]



[/am4show]


Have a question ?

Tell us what you're thinking...

Comments

2 Responses to “Build an Op Amp Bargraph Light Meter”

  1. Hmmm… it plays through to 7:32 here. Try again?

  2. Shiralee Seerden says:

    why dose the video stop at 5:55