Camp2019 kits

At CCCamp 2019 there are a few electronic kits available for soldering, some related to our goal, some not.

But anyway, here is the info you were looking for!

Kit A: Solar powered noise maker:

This kit is a simple bleeping sound generator, it has all SMD parts except for the headphone connector and the solar panel.

The PCB and components are RoHS compatible, but you could use leaded solder too. The small point on the outline of the LEDs is the anode/positive side of the LED. If you have finished soldering the PCB and there is a bit of light it should make some noise. Place your ear near the piezo or attach stereo headphones. The LEDs only blink in bright lights. The pads on the outside of the PCB can be used as finger contacts or to solder other components to influence the sound. The (-) pad on the top side of the picture is not connected correctly, but the other (-) pad is.

Kit B: The EMF detector / RevSniffer:

The schematic is pretty simple, but it works in a complex way. Any of the three transistors can work as an amplifier or detector. It all depends on the strength of the signal. After assembling, hold the button and point the inductor/antenna to the device you want to listen to. If there is a static or no field, you will hear some hissing noise, that's the noise generated by the electrons dancing inside the transistors. If there is a stable high frequency field, you will hear nothing, if there is some modulation, this will make all kinds of nice noises, from simple clicks to highly complex and beautiful sounds! Have fun! The provided headphones are cheap, so if you don't hear anything, try another set.