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by RaspTech
Tue Apr 09, 2019 10:52 pm
Forum: Wanted
Topic: Hiring linux driver to rpi porting expert (sim7100 with rpi)
Replies: 6
Views: 1401

Re: Hiring linux driver to rpi porting expert (sim7100 with rpi)

Have you seen https://www.pianywhere.com/product/pianywhere-4g-raspberry-pi-hat/ They have it working in a HAT - you may find a work around in their application notes / drivers. They dont provide any documentations on their website about setup, only troubleshooting, which I dont find useful.. I cou...
by RaspTech
Tue Apr 09, 2019 6:45 pm
Forum: Wanted
Topic: Hiring linux driver to rpi porting expert (sim7100 with rpi)
Replies: 6
Views: 1401

Hiring linux driver to rpi porting expert (sim7100 with rpi)

Hello, Im using rpi 3b+ with latest raspbian. Ive got development board sim7100a(gps/3g/4g) from: https://amzn.to/2YVBBiV They state its working with rpi, however they didnt even included instructions for linux or linux driver. Ive managed to get it working thru usb on windows 10 with their win10 dr...
by RaspTech
Sun Apr 07, 2019 5:44 am
Forum: Beginners
Topic: Shut down/stop boot raspberry if undervoltage
Replies: 0
Views: 73

Shut down/stop boot raspberry if undervoltage

Hi, I have latest raspbian noobs on pi 3b+. I was wondering, is there any chance to set a script thru crontab -e that monitors pi supply voltage and if its below 4.7V - initiate clean shutdown for pi. Or/and if its possible to setup, that it woulndt start if detected low voltage at boot start? I not...
by RaspTech
Thu Apr 04, 2019 3:47 am
Forum: Troubleshooting
Topic: Is it safe to disconnect power at this raspberry state?
Replies: 0
Views: 80

Is it safe to disconnect power at this raspberry state?

Hi, I have raspberry pi 3b+ with latest rasbian. Ive made power button on gpio with dtoverlay=gpio-shutdown on config.txt, it worked flawless. However Ive wanted to monitor raspberry state(is it running or not). So Ive added dtoverlay=gpio-poweroff ( I know that it not gonna be possible to boot with...
by RaspTech
Sun Mar 31, 2019 10:07 pm
Forum: Automation, sensing and robotics
Topic: Need help making on/off switch with gpio shutdown
Replies: 2
Views: 272

Need help making on/off switch with gpio shutdown

Hello guys, I'm medium experience raspberry enthusiast. I really enjoy what pi3B+ offers(hardware, software, documentation), but there's one thing I cant figure out. I want make proper power on/power off module for raspberry pi 3B+. However gpio shutdown or pin RUN, functions more like desktop power...

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