44. MRH13-10-Oct2013-P.pdf - page 62

18
18 and 19: The backside of my train order control panel
showing the rotary switch, two push buttons and LEDs.
White is ground. Blue is not used. Red, yellow, and
green connect to the switches and LEDs (21a).
19
An ugly "work around" yellow LED
in series with a red LED (21a).
Up the Creek Column - 11
index contents
MRH-Oct 2013