I have a heating controller hidden in a cupboard which is itself hidden at the back of a cupboard filled with file boxes... it is a pain to remove dozens of file boxes and a couple of shelves just to be able to see the controller LEDs.
Maybe a webcam is a solution, but there are some constraints:
I have only 12 cm between the inside surface of inner cupboard door and the front of the control panel. Somehow the camera thickness lens-to-back plus its minimum (almost) focussed distance has to fit in 12 cm.
The inner cupboard is in total darkness apart from the LEDs I'm trying to monitor.
90° viewing angle (could survive with around 70° but this omits the non-critical "pump on" LED.
NICE TO HAVE:
So cool if the cam could connect to my WiFi, but USB power & data will do.
Blurred image due to imperfect close-focus: I only need to differentiate between On / Off / 2Hz flashing LED and between Red or Yellow on each of the six critical LEDs
Hi-Res: I only need enough definition to determine which LEDs are doing what.
Frame rate: I only need to see the 2 Hz flash -- 4 fps should do that.
I have no issue to drill through the 1.3cm inner door if there is some alternative device (a video door peep-hole for example). I have any amount of space OUTSIDE the inner-cupboard door.
So there you have it: thin webcam with close focus ability on high-contrast scene (bright LED in total darkness).
Suggestions?? Thanks Chris