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by jriff
Fri Jul 12, 2013 7:30 am
Forum: General discussion
Topic: Micro UPS
Replies: 5
Views: 4049

Re: Micro UPS

Thanks for your answer. I need this to run in production on about 300 Pis so a home made solution isn't what I was looking for :-) I was thinking more like a PSU that has a battery or a couple of supercaps built in and a way to let the Pi know that power has been cut. That way I could monitor two GP...
by jriff
Thu Jul 11, 2013 1:46 pm
Forum: General discussion
Topic: Micro UPS
Replies: 5
Views: 4049

Micro UPS

Hi all I have a lot of Pi's running in different places. They are always turned on but are power cycled 1-2 times a day. Power is just cut - no clean shutdown. Sometimes the filesystem on the SD card get corrupted and I guess it is because of the sudden loss of power. I was thinking that there must ...
by jriff
Tue Feb 12, 2013 10:09 am
Forum: Advanced users
Topic: GPRS usb modem, Huawei E171
Replies: 12
Views: 20054

Re: GPRS usb modem, Huawei E171

Got sort of a solution: Create the file: /etc/udev/rules.d/41-usb_modeswitch.rules with this content: ATTRS{idVendor}=="2357", ATTRS{idProduct}=="0200", RUN+="usb_modeswitch '%b/%k'" - remember to change the vendor and product to suit your dongle. That makes it switch o...
by jriff
Tue Feb 12, 2013 8:11 am
Forum: Advanced users
Topic: GPRS usb modem, Huawei E171
Replies: 12
Views: 20054

Re: GPRS usb modem, Huawei E171

I have the exact same problem with a TP-LINK MA180. Works fine if I unplug and plug in the device - if have it inserted on boot usb_modeswitch fails. Also fails if I run usb_modeswitch from the command line after boot. VERY strange.

Does anyone have an idea?

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