stan2004 posted:It's no bother. Yes, the resistor and capacitor in the proposed circuit are non-polar in that they can be hooked up either way with equal results...as opposed to the diode which must be hooked up with the bar end as shown.
I'm not sure what your meter is indicating. Was it set to measure "DCV" (DC Voltage) or something else?
What's tricky about using a meter to measure this circuit is the capacitor. In basic terms, the "continuity" of the capacitor changes with time when a siding is turned on. It starts with high continuity and then quickly (in a fraction of a second) drops to low continuity. The effect of this behavior is to generate a short (fraction of a second) trigger pulse into CH1 which starts the FRM01 timer. It is virtually impossible to get a usable measure of continuity using a meter since everything happens so quickly!
The introduction of the resistor and capacitor pairs will not damage the AIU. I think the diagram showing where to add the resistor/capacitor pairs to your existing wiring with the diodes is fairly straightforward. It does not introduce any "new" sources of power which is where there might be cause for concern.
Ok, I set up a small board with a single diode, resistor and capacitor. It’s connected to the FRM01, dc/ac relay board , and the the AIU as diagrammed. When I trigger the AIU, I get 12 VDC through the diode. But when I measures voltage between the diode input and the resistor output, I’m reading 0.33 VDC which isn’t enough to trigger the FRM01. Did I buy the wrong parts?
