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by radioactive321
Mon Feb 03, 2020 1:41 pm
Forum: Troubleshooting
Topic: GSM Module after ATD command Speakers not working
Replies: 1
Views: 297

GSM Module after ATD command Speakers not working

Hello all, I am having difficulties with minicom when i write the ATD********; command I recieve a phone call but nor the Microphone nor the Speakers work.
by radioactive321
Fri Oct 18, 2019 7:31 am
Forum: Troubleshooting
Topic: Use battery as a back-up when main power goes down
Replies: 15
Views: 1774

Use battery as a back-up when main power goes down

Hi all,

I wanted to ask about a way which I can use a battery as a backup if the main power goes down?

And Second question how large should the battery be to keep it lets say up to 24 hours for a Raspberry Pi 4


Thank You in Advance
by radioactive321
Thu Oct 17, 2019 9:30 am
Forum: Troubleshooting
Topic: Raspberry Pi - ETH0 and WiFi automatic switch when ETH goes down
Replies: 1
Views: 122

Raspberry Pi - ETH0 and WiFi automatic switch when ETH goes down

Hello Everyone I am trying to build a system in my Raspberry Pi 4 with Raspbian OS. I want to have a USB-SIM-Card Data as a Back-up for my Ethernet/WiFi. In case that the Internet Goes down automatically switch to USB dongle, and switch back to Ethernet when it comes back up. Is this possible to do ...

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