undefined | Better HN

0 pointsBrandoElFollito7y ago0 comments

Which buttons did you use?

I was wondering about that as well but I only found the Amazon ones, which either need tricky operations to be usable (the brand-oriented dash ones) or expensive (the Amazon IoT (eom dash button) for 25 eur).

Surprisingly I did not find one on AliExpress

0 comments

stevekemp7y ago

For the buttons I first of all wired a button to an ESP8266 device, made it connect to wifi and publish to MQTT and handled it that way.

But when it came to time to setup a lot more of them I realized that would get expensive quickly. SO I cheated. I bought a bunch of 433Mhz-based radio-buttons:

https://www.aliexpress.com/item/OWSOO-433MHz-Wireless-SOS-Bu...

Then I hooked up an SDR receiver to my PC, and handle it that way. I have a 433Mhz receiver for the arduino, which could also decode those transmissions, but I never used it for anything except to prove I could.

There's a pointer to the software and some overview here:

https://blog.steve.fi/decoding_433mhz_transmissions_with_sof...

BrandoElFollitoOP7y ago

Thank you. I was also considering the 433 MHz way and now that I think about it even bought a sonoff bridge :)

I will spend more time on that during summer when the kids are away

j / k navigate · click thread line to collapse