Hacked Gadgets Forum

April 12, 2006

What to do with Blue Balls

at 2:24 am. Filed under DIY Hacks, Electronic Hacks, Funny Hacks

When testing make sure the position of the LED is not very close to the photo-cell. When it is dark the photo-cell wants to turn on the LED, but if some of the light from the LED shines onto the photo-cell it may be hard to get it to function properly.
On the breadboard the Red and Black posts are connected to a 9 Volt battery snap leads. This is jumpered onto the power rails of the breadboard. In this case negative is the upper rail and positive is the lower one.
Top view of the circuit, when looking at the transistor from this view the pins from left to right are, Emitter, Base, Collector. This relates to E, B and C on the schematic diagram.