This conventional 4 channel circuit with the 4017 and 555 was found in the November 1991 Radio Electronics magazine. The potentiometer can be 47k and it controls the speed of the effect.
This circuit trips by shorting the load to quickly blow the fuse when the voltage exceeds a...
Epson SG 8018 Epson Crystal Programmable Oscillators Available from Mouser Electronics, these...
This circuit works with the previous two by demodulating the signals received modulated in FM. The...