Troubleshooting
WiFi
Be sure to carefully read WiFi Configuration before continuing.
The Screen Crab only supports dedicated 2.4Ghz APs. Access points with band steering enabled will not work.
Advanced WiFi Diagnostics
Please follow the below guide to generate a WiFi diagnostics file.
- Create a file named
autoexec.txton the root of the SD card containing:
source /system/bin/crab && do_gpio_setup && locate_sd && wifi_config > $SD_LOCATION/wifiinfo.txt && ping -c 5 8.8.8.8 >> $SD_LOCATION/wifiinfo.txt; ping -c 5 google.com >> $SD_LOCATION/wifiinfo.txt; disable_wifi && sleep 5 && enable_wifi; ping -c 5 8.8.8.8 >> $SD_LOCATION/wifiinfo.txt; ping -c 5 google.com >> $SD_LOCATION/wifiinfo.txt && cycle_colors
2. Insert the MircoSD card into the Screen Crab and apply power.
3. After boot and diagnostics, the LED colors will change rapidly.
4. Check if the device has connected to the WiFi network.
5. Press the button and safely eject the MicroSD card.
6. Check the MicroSD card for troubleshooting assistance in the newly created wifiinfo.txt file.
Wont Connect to Cloud C2
If your Cloud C2 instance uses HTTPS, you will need to apply the SSL Update
If you have already confirmed your Screen Crab has a successful connection to the access point configured using the config.txt, be sure to confirm your Cloud C2 server configuration is valid and functional; See Cloud C2 setup for more information
Additionally confirm that the device.config used to register the Screen Crab is correct.\
No Video Signal
Be sure to confirm the following:
- functional HDMI cables are fully seated in all ports
- fully functional USB-C cable, with appropriate power delivery
- target device uses a supported or down-scalable resolution. non-16:9 aspect ratios may not work. Non standard codecs may not work.