This simple circuit allows us to drive serially connected seven LEDs by using a single NiMH (Nickel Metal Hydride) AA cell. As you can see there are a few components, a CMOS 555 timer, an NPN ...

This LED PWM lamp controller illustrates how multiple lamps can be strung together in order to produce large sequence of light. Before the construction of the circuit, some points were specified ...

Frank Hertel’s project: three individually dimmable LED lights. (Frank is the master of recycling; the wooden mounting pedestals are the panels from a decommissioned ATI console!) Thanks for your ...