Endoscope cam woes

As reported last week, the endoscope failed after just 30 minutes use, due to the fact that where the cable entering the USB plug, it had been left un fixed, with no strain relief - simply hanging on its wires. A fairly inflexible cable, just dangling on its soldered joints, which with only a little use, came apart.

So I raised a dispute with the ebay seller and have a full refund and keep the cam.

This being DIY, I'm keen to repair it and fix the obvious lack of any strain relief, except its rather lacking in clues as to what colour wire belongs where, I wonder if anyone else might have the same one and could please take a peek inside? The USB plug is like a clip together clam shell plastic case, with an edge on pot to set the LED brightness. If yours is the same, its worth your opening it up anyway, to sort out some strain relief for the cable, before it fails.

It is this one -

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There are a total of five wires - red, orange, green, black and brown.

With the case open, the cable exiting to the left, the USB plug to the right, there is a vertical row of 4 terminals in use, with a fifth offset slightly at the top and to the left. As below...

o o o o Black o Brown

The black and brown remain attached, so I just need to work out where the red, orange and green belong. The shorter length of the red, suggests it probably goes to the top off set terminal.

Help please!

Reply to
Harry Bloomfield
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Normally there are just four wires red=5V black=0v green=data+ white=data-

microusb does have five pins.

as you have an extra, is it just a shield with some coloured sleeving over it, or an actual wire of that colour core?

Reply to
Andy Burns

Those are not the standard USB colours!

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If you're stuck, I think you're resigned to buying another and checking the pinout.

I would suggest if you need to get the power connections right, but no damage will occur if you get the D+ and D- reversed.

Reply to
Fredxxx

The extra 5th wire has to be for the illumination. The illumination brightness is adjustable via a pot, so the output of the pot, will go to the LED's.

Reply to
Harry Bloomfield

That USB plug is quite large, and with the side switch/potentiometer, suggests there is more going on than straight USB.

Its funny how your colours match this:

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Reply to
Fredxxx

Fredxxx explained :

It will just be a standard set of colours for a 5 core cable.

Reply to
Harry Bloomfield

Harry Bloomfield brought next idea : I think I have it almost sussed out..

o red +ve o o o Black -ve o Brown LED variable lighting output

Orange and green remaining, which I'm told can be sorted by trial and error, the D+ and D-.

Reply to
Harry Bloomfield

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