Hi, we recently purchased the OAK-SoM Pro S3 and FFC-4P boards to experiment with using RVC3 (the OAK-SoM MAX version we needed was out of stock). We followed the instructions [here](https://docs.luxonis.com/projects/hardware/en/latest/pages/BW2099/) to remove and move the resistors on the FFC-4P board. However, when we try connecting to it on the computer we just get errors saying no device is found. We believe that our initial move of the resistors may have been wrong, so we looked at the [PcbDoc](https://github.com/luxonis/depthai-hardware/blob/master/DD2090FFC_DepthAI_4-camera_FFC/PCB/DD2090_4CAM_FFC.PcbDoc) file for the FFC-4P board to confirm the resistor values. We believe we should move 2 10K ohm resistors, remove the 2 marked resistors, and add a 0 ohm resistor. We have tried this, but the computer will still not recognize the board. Is it possible that we have damaged the board, or are we missing something to get this working? Thanks for the help.

Hi jjc999! It's possible that the issue you're experiencing is due to a hardware damage or a misconfiguration. However, without more specific information, it's hard to say for sure. Here are a few things you can check: 1. Verify the resistor values and their positions again. Make sure you have moved the correct resistors and that they are in the right places. 2. Check the FFC connections. Ensure that the FFC cables are properly connected and that the pins are not damaged. 3. Ensure that the OAK-SoM Pro S3 and FFC-4P boards are compatible with the RPi camera interface. You might need a FFC from Arducam which converts the 26-pin Luxonis camera pinout to 22 pin RPi camera pinout. 4. Check the power supply. The OAK-SoM Pro S3 and FFC-4P boards require a specific power supply. Make sure you're providing the correct voltage and current. 5. Make sure you're using the correct camera modules. Not all camera modules are compatible with all OAK FFC baseboards. Refer to the documentation to see which cameras are compatible with your OAK FFC baseboard. If you've checked all Hope this helps! :) Best, Luxonis BOT

Hi @"jjc999"#p16456 1. press BOOT_BTN 2. plug in the cable. On Linux host, the device should come up. 3. Then you can follow the OS/FIP flashing guide for S3 devices https://docs.google.com/document/d/1r3en4EqgDG3hum8o5yS1DJ5vSCb6aNqyA38tIM8723U/edit#heading=h.xush1yeo9n1f Should get you up and running. Thanks, Jaka

Using OAK-SoM Pro S3 with FFC-4P

jjc999

Hi, we recently purchased the OAK-SoM Pro S3 and FFC-4P boards to experiment with using RVC3 (the OAK-SoM MAX version we needed was out of stock). We followed the instructions here to remove and move the resistors on the FFC-4P board. However, when we try connecting to it on the computer we just get errors saying no device is found. We believe that our initial move of the resistors may have been wrong, so we looked at the PcbDoc file for the FFC-4P board to confirm the resistor values. We believe we should move 2 10K ohm resistors, remove the 2 marked resistors, and add a 0 ohm resistor. We have tried this, but the computer will still not recognize the board. Is it possible that we have damaged the board, or are we missing something to get this working? Thanks for the help.

erik

Hi @jjc999 ,
Regarding the instructions link, I can't find the tutorial you are referring to. Anyway, have you installed the custom FIP for the FFC-4P with som-pro-s3?

jjc999

Hi @erik, thanks for getting back to me on this. Yeah I'm not seeing the instructions on that link I sent either. I was just referencing some instructions I have seen on which resistors to remove on the FFC-4P board to get the RVC3 board to work with it.

I have not installed the custom FIP, this is likely my problem. Where do I get this and what are the steps for installing it?

jakaskerl

Hi jjc999

press BOOT_BTN
plug in the cable. On Linux host, the device should come up.
Then you can follow the OS/FIP flashing guide for S3 devices https://docs.google.com/document/d/1r3en4EqgDG3hum8o5yS1DJ5vSCb6aNqyA38tIM8723U/edit#heading=h.xush1yeo9n1f

Should get you up and running.

Thanks,
Jaka

jjc999

@jakaskerl thank you very much for the help! I will try this out and let you know how it goes.