Rewiring v3 cam straight to power cord

I have a v3 camera that was ripped off of its base by Dennis the Menace. I’m currently trying to bring it back to life, but cannot figure out which wires to solder. The camera itself has 4 wires: brown, grey, white, and clear. The power cord (supplied by wyze) has 2 wires: white and clear. Can anyone help me decipher which wire is which. Thank you for your time and any help you offer. If you need better pics, let me know.

There should be a board in between there that the 4 pin plugs into then the power cord solders onto - are you missing a piece?

Here is a Wyze v3 TearDown video which may help.

Yes, I’m missing the piece that was waterproof that plugged into the power cord which is why I’m thinking of trying to bypass that piece and go straight to power. The camera is used inside so it doesn’t have to be waterproof.

OK it looked like you were going to solder directly to the 4 pin connection, obviously you need to solder to the board. Unfortunately I can’t tell you which wire is which, but if you measure the voltage at the USB wires you should be able to determine which is positive, and then see if there is any indication on the board, or may be able to trace to some component like a capacitor that would tell you the polarity.

Ok lll try that. Thank you so much for your help. I know it’s not an expensive camera, but i simply can’t afford a new one as of right now, but I’ll see what i can do. Thank you again!!

Why wouldn’t you just consult a pin-out diagram for USB-A and Micro-USB connectors, because the power cable (USB-A male at one end and Type-B Micro-USB at the other) has only two conductors (it’s not passing data), then trace that to the right wire at the other end (if the flatness and orientation of the cable aren’t direct indicators, then a multimeter can be used to test for continuity) and consult the board to see how the pins there are labeled? Maybe the board isn’t labeled that way? :man_shrugging:

Also, who or what is “Dennis the Menace”? One of my roommates is an orange cat called Guinness, and he has earned the name “Guinness the Menace” with some of his behavior, though I haven’t (yet) seen him destroy any camera parts. :grinning_cat_with_smiling_eyes:

With only 2 wires in there I wouldn’t want to fully trust just tracing it visually, but anyone that can solder must have a DMM. So measuring the voltage like I said would work, but probing pin 1 (+5V) on the USB-A end side and seeing which wire has continuity would also tell the same thing, either will work.

Then the hard part is finding the right pin on the board but generally PCBs are pretty good about having some marking to let you know.

Yeah, that’s what I was thinking for the cable part. :+1:

I don’t know how the board itself is labeled but I would expect to see something useful there. I just wasn’t finding good enough photos when I tried a quick search of official sources.

Much like mechanics curse engineers when working on cars (and us weekend warriors tend to curse them even louder), us electronics geeks will curse the PCB designer when they do not label everything well in the CAD software when designing the board. Luckily I’d say 90% of the time there is some decent indicator (5v, +PWR, +P, etc). The other 10 percent you gotta try and find a polarized component you can trace back from. Often it will lead into a voltage regulator chip which you can look up the pinout for and trace back from it, even just a protection diode will tell you.

Of course if all else fails and the cam is dead anyway, there is always the “try it and see”. If the cam powers up and the LEDs all work, night mode is not engaged when it is light, etc, it is likely you’ve got it right, but not guaranteed. And there is also no guarantee that they don’t have a diode protecting the cam if you do it backwards. So that’s a last resort.

I will say that the universal language for PCBs is English, which is nice for those of us that don’t read “picture based” languages. The PCB CAD design is typically done in an English speaking country (first or second language) and there are universal symbols that can easily be recognized by non-english speakers with a chart and/or training.

Probably can interpret some of that as offensive but it is what it is.