Virgus

Great, many thanks Igor!

Hello Igor I tried without success but at the end I found a solution (sort of).
I restored a clean Armbian raw image to my sd and then zeroed it
and used rsync to backup my original sd to the smaller one.
Rsync took less than 2 minutes (2Gb of data on my SD) and I now have a compressed raw of 1.3GB!
 
Not the ideal solution but it's a good compromise at least.
 
Thanks and have a nice day,
V.

DD is direct copy and you can use it almost anywhere.
If you want to speed up the process - shrink data partition on the drive, save only partitions (separate) and expand back. But in this case you are not saving the boot loader. You need to save it separate.

Just to give an idea how many information sources are available (forget about the cameras since these are Raspberry Pis that record video on the Lamobo):
 

 
The disk's temp can be read using S.M.A.R.T. (hddtemp package, already included by Igor), PMU using sysfs, SoC using a small binary included with my sunxi fixes, and I also used an internal thermal sensor to get an idea what's going on (since in the enclosure are 2 PSUs and 1 LCD with backlight and signal board)
 
In the statistics view RPi-Monitor provides graphs and there I differentiate between available voltage and used amperage for the power sources "USB OTG" and "power-in" (unfortunately not available for the LiPo connector when used together with a PSU). But this way you get a clue what sort of problem you're running into (most likely undervoltage due to bad USB cables and the most crappy connector in the world: Micro-USB).

The whole idea is crap. The person supplying additional power used the wrong Micro-USB connector (USB OTG and not power-in).
 
You always have to keep in mind that this is not a Raspberry Pi (where you can insert power easily through GPIO pins since its power scheme is totally different) but an A20/AXP209 device. And the PMU (AXP209) decides on its own where to take power from if there is more than one source available.
 
In case you use kernel 3.4 I would suggest installing RPi-Monitor with the sunxi fixes since this immediately shows you thermal values for SoC and PMU and the power used from the three different available sources (power-in, USB-OTG and LiPo -- for the latter not exactly when you connect a PSU to the LiPo connector since the voltage can't be read out and my sunxi fixes then assume 5V).
 
I delivered one R1 recently to a customer. Runs vertical, no heat sinks (one on the SoC but a crappy one that doesn't help at all) but some sort of convection and a small fan that jumps in if the PSU's temperature exceeds 55°C. Uptime while being totally stable for 30+ days. Temperature was a problem a few weeks ago when ambient temperature exceeded 30°C (since inside the enclosure it were 7°-8° above and then the PMU's temperature exceeded 55° -- might be ok if it gets higher but I decided to let then a fan cool down both SoC and PMU since the fan is just a few cm above both)
 

 

:-) I was in the same situation several months before. Lamobo can work perfectly, as both of my lamobo does, but you must: (thanks to Igor, Patcher, Tkaiser etc...)
 
- Operate Lamobo verticaly
- put high profile heatsink to BCM switch (under the harddisk)
- put heatsink to A20
 
If you use ordinary HDD with consumption 500mA, no USB, no WiFi, no HDMI and you have good USB power cable, you don´t need secondary power via battery connector.
 

 
:-) It works )))
 
PM