great video. im working on my final year project and il be sure to view your other videos. it was a great help and you presented it prefectly
goodmorningimage 5 months ago
thank you for the video!!!!!!!!!!!!!!!!!!!
josepep 7 months ago
this is awesome :) good tut
URKIDN1 8 months ago
hi, i think you are wrong in your last ecuation cause r1=13.45 / r2= 0.05 = 269.
cepedin 9 months ago
Why is it 20k and not 15k?
4k/2k = 20k/10k
tarbidian 10 months ago
OKSemi, you are correct, the LDR needs to be 20k not 15k. Thanks for pointing that out...time for some annotations.
(@ t = 7:50) Hey David,
I don't know if I'm missing something, but as far as I can tell a value of 15k for the photocell won't make the light turn on:
12V * (15k / (15k + 10k)) = 7.2V
Should it be?
12V * (20k / (20k + 10k) = 8V
Am I missing something?
OKSemiconductor 10 months ago
Loading...Saving...
Loading...Saving...
great video. im working on my final year project and il be sure to view your other videos. it was a great help and you presented it prefectly
goodmorningimage 5 months ago
thank you for the video!!!!!!!!!!!!!!!!!!!
josepep 7 months ago
this is awesome :) good tut
URKIDN1 8 months ago
hi, i think you are wrong in your last ecuation cause r1=13.45 / r2= 0.05 = 269.
cepedin 9 months ago
Why is it 20k and not 15k?
4k/2k = 20k/10k
tarbidian 10 months ago
OKSemi, you are correct, the LDR needs to be 20k not 15k. Thanks for pointing that out...time for some annotations.
tarbidian 10 months ago
(@ t = 7:50) Hey David,
I don't know if I'm missing something, but as far as I can tell a value of 15k for the photocell won't make the light turn on:
12V * (15k / (15k + 10k)) = 7.2V
Should it be?
12V * (20k / (20k + 10k) = 8V
Am I missing something?
OKSemiconductor 10 months ago