JeVois A33 powers up but LED stays green

Question

I bought the JeVois A33 kit (camera, Y cable, SD card and adapter) kit from Amazon. The camera seems to power up (solid green LED and cooling fan spins), but it doesn't enumerate to Windows 10, and I never get any orange flash or solid orange on the LED.  I've tried reflashing the MicroSD card as well as using a 64GB Sandisk card, with the current image and the latest archive image.

Is there a way to diagnose where in the boot sequence it's getting stuck?

Thanks in advance.

Answer 1

You can diagnose boot if you have a USB to serial cable connected to the 4-pin serial port of JeVois. First you edit boot options on the SD card to enable serial console. Then you should see boot messages. See here:

http://jevois.org/doc/Debugging.html

(edit uEnv.txt in the BOOT partition and uncomment the second set of kernel parameters, then launch some terminal program on your host, selecting the port of your USB-to-Serial cable and 115200 bauds).

But usually the problem is either a bad USB cable, weak USB port on the host, or the SD card is not fully inserted into JeVois (try to use a credit card to push it in all the way, just beware that if you slip, it will fly out, so be ready to catch it).