Shadow/remote control activated leds.

Did you ever wanted to create a light activated by coming night or a shadow?
Well.. here's an instructable on it, but there is an extra: you can actinate it by a remote RF
control. It is so powerful, i can light up my hole room!

Step 1 What you need

Materials:
*5v relay
*photoresistor
*any all- purpose transistors
*high power leds preferabely 5v
*a working remote control toy-car (not in the picture)

Tools:
*soldering iron
*solder
*flux
*wire cutters

Comments

[hg341]

you need to get neon lights and use the led for head lights on a rc car

[James (pseudo-geek)]

could you please draw neater schematic and without the little yellow boxes.

[James (pseudo-geek)]

but aside from that, this thing looks pretty cool

[scotty3785]

And probably a base protection diode between the potential divider and the transistor. Probably in the 1kohm region. Also a diode between the toy car controller and the cathode of the LED to prevent the current attempting to flow through the LED in the wrong direction. Have a look on the net for Eagle. You can use it to draw neat schematics and to layout PCB's. A clearer schematic would help this instructable

[Dzwiedziu]

You'll need a diode accros the coil, in reverse to the current. Otherwise the coil can burn the transistor.