Hi! I got a OV9281 camera off of Amazon from the official arducam store and when I was mounting it I broke off an SMT component, my issue is I don’t know what is was and I cannot find a wiring schematic for it. It looks like its a resistor or capacitor but I am not sure. If anyone can confirm what part it is so I can replace it that would be greatly appreciated
There is a better image on the product page you linked. It was a capacitor and the board could easily be repaired with the proper tools and correct part.
Ask the ArduCam people for the schematic, so you can determine the correct value.
- Try a 100nF . . . then try a 10nF . . . then try a 1uF.
Ok, I have contacted arducam support to see if they can send me a schematic. I also found another one lying around, is it possible to determine what resistance the resistor is on the working board?
SMD resistors are usually marked with the resistance value.
Oops, totally misread that. So is there any way to see what capacitor I need from the board with it?
Yes, the schematic for the module, AS STATED in post #2.
Alright, I guess I have to wait to support then, thanks!
- Try a 100nF . . . then try a 10nF . . . then try a 1uF.
Right now the camera works but is inaccurate, as in I run Mrcal calibration and get very different results each time opposed to the working one which gets consistent results each time. I need these to be super accurate as they are used for computer vision and so I feel that guessing the capacitor might get most of the way there but I would rather have it be 100% correct. Given I know very little about capacitors and how these work so I may be just way wrong with my assumption.
- Do you have DMM that can measure capacitance ?
Measure the capacitor on the good board. Measure where the capacitor was on the broken board in case there is a capacitor in parallel.
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Assume you have a soldering iron.
Remove the same component from the good board, test its value, re-solder it back on the good board. -
Do not hold breath on getting a schematic.
I just spent the past 30 mins trying to desolder it only to come back to see your instructions, anyways it measured 107.3nf and dropped to 106.9nf.
- As previously mentioned, get 100nF 1206 SMD capacitor, buy extras.
I see that there are 107nf resistors, should I get those?
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No, 106nF vs 100 is just a normal variance.
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If you have some old junk PCBs try capacitors from them.
Ok, thank you! Will do.