Joule Thief

Mk1 · February 08, 2009, 11:34:15 PM

Quote from: Goat on February 08, 2009, 11:32:28 PM
Yes gadgetmall the solar panel has a light sensor and will "cut off the leds in the day".

Put some tape on it?

TheNOP · February 08, 2009, 11:37:08 PM

Quote from: Mk1 on February 08, 2009, 11:34:15 PM
Put some tape on it?

the solar cell is the sensor.

@Goat
see my previous post, i have edited it.

Mk1 · February 08, 2009, 11:43:54 PM

Quote from: TheNOP on February 08, 2009, 11:37:08 PM
the solar cell is the sensor.

@Goat
see my previous post, i have edited it.

Have a look at the picture there is a little circle and a photo resistor ? (light sensor)

Goat · February 08, 2009, 11:45:41 PM

@ Mk1

If I put my finger on the light sensor the LED goes out in the daytime when aimed at the sunlight, at night it will not do the same, there's not enough light to engage the solar panel and the battery takes over, the photo cell doesn't work until you increase the light towards it or block it depending on the need to switch the photo cell on or off.

I was thinking more like a CFL driven by gadgetmall's Fuji driving the solar panel...but LED's would be a start...there's enough light all around usually to drive the solar panel.

Regards,
Paul

Mk1 · February 08, 2009, 11:50:46 PM

@goat

The solar cell don't charge at night it discharge that my be also part of the circuit? So in the dark the solar is disconnected. Sorry for my mistake.
Keep the good work!

Mark

Edit you need day time cycle , Photo resistor are like a variable resistor checking its value in light and dark and replacing it by a daytime value may do it.