What's this?

Slack bot for controlling nearby RF devices. For now it can only ring a wireless doorbell.

But why?

Because ringing a doorbell from Slack is a huge productivity boost for everyone in the office.

Awesome! What do I need?

• Silvercrest wireless doorbell that works on 433MHz. I got mine from LIDL. ($7)
• HackRF ($300)
• Some sort of computer that can run Linux and Python3 ($20 - $20000)

How to run this crap?

First you need to sniff the code which triggers the bell. The modulation is ASK, on-off keying. You can use rtl_433, inspectrum or whatever. Install libhackrf-dev, the Python dependencies and then finally build with make:

$ sudo apt install libhackrf-dev
$ pip install -r requirements.txt
$ make

set the ring code and the Slack token as env. variables and you are ready to go:

$ export RING_CODE=<your_ring_code_written_with_1s_and_0s>
$ export SLACK_API_TOKEN=<your_slack_token>
$ ./rfbot.py

What's next?

Who knows... There are tons of crappy devices on 433MHz around us, waiting to be exploited. Patches are always welcome! :)