@James-Harding i'd guess the mjpg_streamer is using most of available current, causing dht sensor to error state and would increase available current for dht sensor or pin20 also used by mjpg_streamer.
if I am on my motorcycle and come home, I want the door to open automatically (if the radius is possible).
I see where you are going with this, a Bat Cave Garage Door. ;-) It certainly is possible. Anything that will try to automatically connect to your main controler via WiFi or blutooth (with proper security signature) will do to alert it.
About the open/close state of the door, maybe your system already has a light that you could use. If not, the simplest and cheapest way is to use a magnet switch (magnet on the door + glass fuse-like switch on the door frame).
Good thing to have finally recent Node support. That I think makes the omega the cheapest device able to run node at this time.
The requirement for USB storage is a bit bad, probably having a SD card socket on the board would be a good thing to consider for further iterations.
Thanks anyway to the onion team for the hard work!
Are you copying the files over to /tmp? There should be quite a bit of space there as RAM disk, which is good for installing ipk packages. If there's still not enough space, you might consider extending the storage of your Omega with ext-root. You can find more information here: https://wiki.onion.io/Tutorials/Using-USB-Storage-as-Rootfs.
It's quite unlikely to brick Omega by installing packages. Unless the package crashes the system on startup, in which case it will get into a boot-loop.
@Eduardo-Marín The UART on the Omega has been occupied by the serial terminal. If you want to use UART on the Omega, there are three options. The easier way is to use a USB-to-serial adapter to read the information from the rfid module. The second way uses Arduino Dock's TX RX to receive the data from the RFID module and send the information to the Omega via I2C. The final way does not require either the USB-to-serial adapter or the Arduino dock, but it requires you to modify and re-compile the uboot as well as the firmware of the Omega to disable the serial terminal.