Im looking at building the Smart Phone Light.
If anyone could answer a couple of questions.
I have tried to buy (C1) 1.u 400v Capacitor. But my local guys dont have anything like this. Could I use something else. I did see 1u 250v but 400v seems a little excessive, acept for spikes I suppose but I think everything would go if it got that high.
Secondly I'm asuming that the (C3) +1000 could be a 16v cap.
Third the Relay I guess needs to be 5v relay. The diagram smudges the number. But asuming that the trigering voltage there is 5v DC.
Finally, the circuit calls for "A light dependent resistance (LDR), with about 5 kilo-ohms resistance in the ambient light and greather than 100 kilo-ohms in darkness"
I have never bought LDR's it looks like you buy them based on ohms eg 100 ohms, since they are a resister. But I dont know what size to buy. Should I get a 5k ohm or 100k ohm. Im not sure I know what to ask for?
One or any of the questions answered would be helpfull.
Thanks.