Olmatic S.USV Uninterruptable Power Supplier HAT (e.g. car integration)
Hi Kalkov and everyone else,
As mentioned in the topic here: https://forum.emteria.com/discussion/665/help-needed-for-python-smbus-and-i2c-tools#latest
I did some tests with the UPS HAT for the Raspberry 3B (without + because of incompatiblity with POE PIN Out on B+) which worked in a special way but I'm not convinced about my results yet.
What does the Unit: the Unit is designed to work with the pi 3 as an UPS (uninterruptable power supply which means it can handle powercuts and so on).
Integrated RTC and the most important for my project as a voltage transformer it has a seperate 2way in for voltage from 7 to 48 V DC wich makes it perfect to supply juice from a car, or boat or something. The Unit is controlled and configured by a deamon wich is written only for raspbian in python i think. So i did some research an tried a dual use install on emteria with a package called DEBIAN KIT on F-Droid. It worked in a way but not a 100 percent and I'm not sure where the show stoppers are.
First thing that i noticed is, emteria has problems with the integrated rtc ds1307 as mentioned in this topic here: https://forum.emteria.com/discussion/522/enable-i2c-and-install-a-rtc#latest
My first thought about this was, its something headed to the dualuse install on the kernel, that debian and android are grabbing for the same device at the same time, but this problem is also present without debian installed on emteria.
The second thing which is difficult is the behavior of the file save shutdown function from the HAT. Because raspbian and emteria seem to use different commands to shutdown the OS and so nothing happens if you cut the mainpower and the timer runs down to whats configured e.g. file save shutdown after 30 seconds.
I think this unit could be a very good upgrade for the pi especiallly running Emteria but its necessary to get it running properly.
So I'm ready to spend your company one of this units for free (I'm not connected to them in anyway, I'm only a private customer) if you say there will be a chance for integration.
here the links to the product, and manual and driver/software (deamon)
the company and site is written in german but i link the EN sites
https://olmatic.de/en/downloads/#1543223443287-9a54167f-6302 (general download page for software and manuals)
https://s-usv.de/files/pdf/SUSV_Manual_Rev2_0_EN.pdf (download link for the manual)
As is saw today it seems the HAT works with tinker board and UP board too.
I'm looking forward to hearing from you.