Simple Raspberry Pi Powered SMS Gateway

#1

Post by DeathArrow » Sun, Dec 05, 2021, 3:31 PM UTC

Simple Raspberry Pi Powered SMS Gateway
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Re: Simple Raspberry Pi Powered SMS Gateway

#2

Post by marban » Sun, Dec 05, 2021, 4:17 PM UTC

I was looking to get a dedicated Waveshare GSM HAT for the Pi but Twilio is so dirt cheap that I never really got into messing around with a DIY solution.

Re: Simple Raspberry Pi Powered SMS Gateway

#3

Post by allisfalafel » Sun, Dec 05, 2021, 4:18 PM UTC

I'd love to get a setup like this with voice calls also supported. I'd like to be able to recieve my calls and texts on any device as I can with email/irc/matrix etc

Re: Simple Raspberry Pi Powered SMS Gateway

#4

Post by 71a54xd » Sun, Dec 05, 2021, 4:22 PM UTC

An LTE-M pi-hat would be awesome! Usually the biggest challenge for projects like this is to find cheap and available modems that can actually be used with reasonable GSM carriers.

Re: Simple Raspberry Pi Powered SMS Gateway

#5

Post by alias_neo » Sun, Dec 05, 2021, 4:25 PM UTC

I made something similar a few years back with a Pi 1 and a GSM "hat".

It came with a C SDK so I had to write AT commands to communicate directly with the modem and it worked great until I didn't need it anymore.

Its purpose was to text me when my power or internet connection went down at home then I could respond with commands such as to shutdown the servers etc.

When power/network came back it would text me the new address so I wouldnt need an outside service for DDNS.

The biggest challenge with the whole setup was finding a SIM from a provider who would let me top it up once per year and maybe send half a dozen texts in that time without deactivating the SIM, for a reasonable price.

Re: Simple Raspberry Pi Powered SMS Gateway

#6

Post by [deleted] » Sun, Dec 05, 2021, 4:26 PM UTC

marban wrote: post #2

I was looking to get a dedicated Waveshare GSM HAT for the Pi but Twilio is so dirt cheap that I never really got into messing around with a DIY solution.

[deleted]

Re: Simple Raspberry Pi Powered SMS Gateway

#7

Post by f311a » Sun, Dec 05, 2021, 4:27 PM UTC

Some dongles can be hackable so the RPi is not a necessary requirement.

Re: Simple Raspberry Pi Powered SMS Gateway

#8

Post by dthakur » Sun, Dec 05, 2021, 4:28 PM UTC

71a54xd wrote: post #4

An LTE-M pi-hat would be awesome! Usually the biggest challenge for projects like this is to find cheap and available modems that can actually be used with reasonable GSM carriers.

I've used Sixfab before. https://sixfab.com/product/raspberry-pi-cellular-iot-kit-lte...

Re: Simple Raspberry Pi Powered SMS Gateway

#9

Post by hoistbypetard » Sun, Dec 05, 2021, 4:29 PM UTC

Does anyone know of an inexpensive plan in the US to use with a setup similar to this that sends dozens of text messages/month?

Re: Simple Raspberry Pi Powered SMS Gateway

#10

Post by vgeek » Sun, Dec 05, 2021, 4:46 PM UTC

hoistbypetard wrote: post #9

Does anyone know of an inexpensive plan in the US to use with a setup similar to this that sends dozens of text messages/month?

I was investigating solutions for sensor SMS notifications & the best IoT type SIM plan that I came across was https://www.hologram.io/pricing/flexible-data . $1.50/line per month, $0.19/outbound SMS, data is pricey.

If you need more SMS, the next cheapest I've used is RedPocket Mobile-- https://www.ebay.com/itm/2-50-Mo-Red-Pocket-Prepaid-Plan-200... - $30/yr for 200 voice/1000 texts/200mb per month on T-Mobile's network.