08  March 2014 update
Just to inform you that this is a hobby non profit site to help friend expand the knowledge in electronics. I don't make money from the boards and i have already post the pcb layouts and schematics.I have the parts for all the kits.
If someone wants to build one or wants a ready assembly kit i can send him the goods worldwide!

New link in the calculators and converters page abot the hysterisis of an opamp as a comparator.
link here<-----

We have just released the new clap switch kit with new schematics and pcb layouts.The new kit is based on the lm358 opamp and 4013 flip-flop...
Read more and download schematics and layouts here<----

I've changed the values of the resistors R11 , R12 , R6.
This is for the amplification level of the signal.
I think that the previous values offered bigger amplification than we wanted.
So now we have more flexibility with the audio levels of the signal.
New values: R6 =10K , R11=4,7K , R12=10K

now you can watch and download the pcb file of rgb mood lamp in pdf format from our site.

download file

New dark detector v2 kit pcb layouts.
Download it from our site.

-->Watch it here<--

This is our new improved version of dark detector.
You can find the datasheet here in the site.

-->Dark detector datasheet<--

We wish you a merry Christmass
and a happy new year!!!