EDITED TO BE MORE SPECIFIC
I took apart an air purifier hidden nanny cam to see if I could place the parts into another object or otherwise repurpose them. But I didn't take pictures of it pre-disassembly and now can't get all the features to work. Please help me figure out the last few connections.
The device basically has two boards, one I'm calling the power board as it's where the AC adapter plugs in and the other I'm calling the camera board, as it hosts the camera. I believe I have ninety percent of the connections to these boards assembled correctly. All functions work except two: the microphone won't record sound and the IR LED doesn't seem to be transmitting so the camera won't capture anything in extreme low light.
The microphone is a tiny little hockey puck the size of a collar button on a man's shirt. It has two wires touching it, a red/black twisted wire with one end glued to the bottom of the mic and the other terminating in a two-pin connector, and a single red wire with two-pin connectors on each end.
I'm confident the shorter end of the mic's single red wire goes into the slot marked "J10 1.25W" on the power board. It's the two longer pieces of wire touching the mic that have me confused.
The microphone and its connectors
Both of these wires end in two-pin connectors, but there's only one two-pin slot available on the camera board. This slot is labeled MIC GND--this implies Microphone ground, right? Between the twisted red/black wire and the single red wire from the microphone, which would be the ground wire? And then where would the remaining twisted two-pin mic wire go?
The camera board also has a six-pin connector whose two farthest right pins are occupied by the wire connecting the power board to the camera board. Is it possible that the mic's remaining two-pin connector needs to be plugged into two of the remaining four pins in this connector? If so, which ones? If not, does that mean it needs to go into the board's three-pin connector (labeled CDS W R) or its four-pin connector (labeled I02 I01)?
As for the IR LED, it has a single two-pin connector coming out of it. There is a two-pin port on the power board that is labeled "D3 LED" and has +D- on it, so my first thought was to plug it in there. But nothing seems to happen when I do.
Why wouldn't the IR LED go into a spot labeled LED?
If the LED doesn't go in that slot, there's nothing else on the power board, so it would likely have to be plugged into the camera board in either the open two-pin slot (MIC GND) the three-pin slot (CDS W R) and the four-pin slot (I02 I01).
I have yet to try to put any of the LED or MIC's two-pin connectors into the three-, four- or six-pin slots on the camera board. Is this the missing piece?
Please help me understand what I need to do to finish reassembling this gadget. I don't know enough about wiring or circuit boards to understand what any of the labels mean or the difference between a two-wire strand and a single wire. Any advice would be helpful. Thanks!