A basic sound power testing circuit that can be used to measure preliminary sound power and sound level (which do not require precision) or as a sound power testing game. See detail

A basic light flashing circuit that suits those who are interested in electronics. Easy to assemble, to understand and low cost with only a few components. The circuit is a good decoration for parties.

This kit creates a basic blinking light circuit that suits those who are interested in electronics. It contains 2 LEDs which alternately blink with adjustable speeds.

This kit contains a small three step flasher circuit. 19 LEDs create a 3 step blinking circle from internal to external. See details

This kit creates a chasing light circuit with several different display functions. It has 3 separate functions: chasing from left to right, chasing from right to left, and an alternating pattern of these two directions.

32 LED chaser kit. This kits makes 32 LEDs Chase in eight different sequences. Click more info for complete details & video link. Kit requires assembly, but can be purchased assembled and tested as an option.

BK-101 Replacement 8 Pin IC

BK-100 and BK-200 Series Replacement 8 and 14 Pin IC. Select the chip for the model desired under options. (Lighthouse, Emergency, Welder, LED Chaser, Etc) See Details

Ghost Buster's(TM) Proton Pak(TM) type Sequence Chip. For use with BK-116 kit. Replacement chip only, does not include BK-116 kit or LEDs! Can be used to convert standard BK-116 to Ghost Busters Sequence.

Replacement Chip set of 8 pin and 14 pin ICs for the FK115, FK116, FK117 or FK118 (Does not include circuit board or any other components)