jakethepup
New Member
I would like to light 6 leds at the most 8.
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hi Jake,I would like to light 6 leds at the most 8.
If I use the 250 ohm resister to test I do connect that to the battery on the postive side and check each one of the leds seperate. I only have a 220 ohm resister will that work?
A photocell is an LDR. In bright light it is from 100 ohms to 1k ohms and in the dark it is megohms.
But is it a Cds photo-resistor.?
I suspect as we are of a like vintage, the term photo-cell used to refer to glass vacuum tube photo-cell .?
Thanks for your replies I will look for your post later on I to need to go someone where and will be back later this evening.
Sorry I did not get on the computer last night, but this morning I checked the led with the 220 ohm resistor and the voltage was 2.4 volts just enough to light the led but not bright at all.
Ok on the photo cell I used another one out of the package and here are the results I got in the light measures 4k with my finger over the cell it measures 36k I am guessing that are better results.
I have been looking at your diagram and I think I understand it, I am going to check out RadioShack web site and see if they have all the part, that is the only place around here that has any electronic parts.
Battery size 4.5 AH, 6 volt. I think RadioShack will have everything, I am going to print the diagram out before I go, and take it with me. Going to try to get there this afternoon.
Just wanted to thank you for your help, I bet I will be asking more question as I build the circuit.
I am in the states, and I love the UK, one of my favorite performers is Gary Numan love his music. Have you heard of Him?