Cheap RF doorbell added to HA using the serial component

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Inspired by the recent blog post by @fabaff I am using the serial component with an Arduino Uno to add an 8 euro wireless doorbell to HA. There are quite a few options for integrating RF into HA using MQTT based repeaters etc, but I wanted an even simpler solution. Simply plug the Arduino in, setup the config and you are good to go. It should be straightforward to add RF transmissions too. I will also swap out the Uno for the smaller Nano, and 3D print a case at some point.
Cheers

Arduino-rf-remote
Arduino-rf-remote3931×1979 1.39 MB

BTW i’m hoping someone will suggest a neater solution for representing doorbell presses on the front end, dispensing of the input_binary :slight_smile:

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Great work, this is making me re-think my RF MQTT gateway

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Hi nice work. I used a R820T2 SDR RTL-SDR Dongle. This device can read different MHz and I use https://github.com/merbanan/rtl_433 to send it over mqtt to ha. Works like a charm and I auto Discover new devices :slight_smile:

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Nice is that one of these? What’s the range like?

NooElec NESDR SMArt - Premium RTL-SDR w/ Aluminum Enclosure, 0.5PPM TCXO, SMA Input & 3 Antennas. RTL2832U & R820T2-Based Software Defined Radio. https://www.amazon.co.uk/dp/B01GDN1T4S/ref=cm_sw_r_cp_api_K2qqAbQVW8VVN

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Bought this one. Which is broken as it seems …have to test if it’s the case.

USB2.0 DAB FM DVB-T RTL2832U R820T2 SDR RTL-SDR Dongle Stick Digitale TV Tuner Ontvanger Ir-afstandsbediening met Antenne, Dropshipping
http://s.aliexpress.com/ZzqY7rqq?fromSns=Copy to Clipboard
(from AliExpress Android)

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I see theres a hassio addon for this stick too:

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Cool, maybe I can add my additions there for “auto discovery”

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Hi, currently using nodered was a rtl433 to mqtt to homeassistant brigde using

Works perfect.