Power Functions™ Lights

Richard Forster-Pearson sent me schematics and photos of the Power Functions lights.

From his diagrams we can see that these leds consume very little current (about 2mA!).

March 2014 update: Clive Seager noticed that the value of R3 in initial schematics was wrong: 18D means 150k, not 18 ohm. Purpose of this resistance is to allow Wedo hub to identify the connected device.