Yes, I would recommend this:
- edit uEnv.txt in the BOOT partition of the microSD. Uncomment the second set of parameters (which the comments above say are for "mild debug mode"). This is to enable verbose booting to serial console. The orange LED is directly tied to powering the image sensor in jevois. When the LED first flashes orange, the kernel module for the camera sensor is loaded and the sensor is detected. Then jevois-daemon is started on the camera. Then the sensor is opened by jevois-daemon, which turns the LED solid orange. If jevois-daemon crashes, the LED will go back to green as the video sensor device is released. With the verbose boot messages you will be able to see that crash on the serial port.
- the verbose boot messages go to the hardware serial port. So you need a serial-to-USB cable, like this one: https://www.jevoisinc.com/collections/accessories/products/usb-to-micro-serial-adapter-cable-3-feet-1m-long
- or this is where you can also go wireless. I have not done this in a long time but when playing with drones we used a serial to bluetooth dongle and connected it to the serial port of jevois. Then we used an app on an iPad to connect to that dongle. The main limitation was that the bluetooth connection was slow at 9600 bauds which limited the rate of messages we could see. I have ordered some serial-to-wifi dongles (ESP-12F) but I have not found the time to try them out yet... Just remember that the red wire on the jevois serial port is an input, so you need to power your wireless module separately and then provide the logic level at which your module operates to the red wire (more info at http://jevois.org/doc/UserSerial.html
- note that LINFO() messages will also go to the hardware serial, so you can use that to print debugging messages.
There is more info about uEnv.txt and other debugging tips, with a screenshot and video, here: http://jevois.org/doc/Debugging.html