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Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#1

Post by mmastrac » Sun, Dec 04, 2022, 5:11 PM UTC

This is my adventure reverse engineering a De'Longhi coffeemaker's Bluetooth-Low-Energy-based protocol, writing a rust CLI for it, and hooking it up to GitHub actions to let us brew from either the browser or the GitHub app by filing issues (all the coffee are defined in issue templates).

Show HN: Hacking Bluetooth to brew coffee in GitHub actions
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Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#2

Post by [deleted] » Sun, Dec 04, 2022, 5:17 PM UTC

[deleted]

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#3

Post by jonas-w » Sun, Dec 04, 2022, 11:10 PM UTC

Thank you very much, that was a good read. Not a long time ago i wanted to do something with ble and rust but it failed miserabily and barely found any documentation for ble on rust, some also said that "rust isn't bluetooth yet". Will definitely give it a try again after seeing that rust can do it.

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#4

Post by a_t48 » Tue, Dec 06, 2022, 2:43 AM UTC

Now you just need a 6DOF robot arm to ensure there's always a cup waiting. :)

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#5

Post by jacob019 » Tue, Dec 06, 2022, 4:19 AM UTC

Need a REST API to implement

    HTTP 418 I'm a teapot

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/418

Or maybe even the whole the Hyper Text Coffee Pot Control Protocol (HTCPCP)

https://en.m.wikipedia.org/wiki/Hyper_Text_Coffee_Pot_Contro...

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#6

Post by flaviut » Tue, Dec 06, 2022, 5:05 AM UTC

I want to shout-out the btleplug library again.

I've tried to work with several different BTLE libraries in the past, and I've always had a ton of problems.

btleplug works flawlessly, has as good of an API as is possible given the intrinsic complexity, and is a pleasure to use.

Thank you btleplug team <3

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#7

Post by poidos » Tue, Dec 06, 2022, 7:01 AM UTC

Great read, lovely to see this type of hacking done. Thanks for sharing your excellent writeup!

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#8

Post by duped » Tue, Dec 06, 2022, 7:10 AM UTC

I'd be wary of exposing a heating element to the internet

But I also love coffee so you should send this to James Hoffman and see if he'll do a video on it

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#9

Post by jawmes8 » Tue, Dec 06, 2022, 7:20 AM UTC

Intriguing work! I hadn’t realized they made grinder/brew combo machines…

Building a GUI or TUI would be a fun addition too!

Re: Show HN: Hacking Bluetooth to brew coffee in GitHub actions

#10

Post by gnull » Tue, Dec 06, 2022, 8:11 AM UTC

Making good coffee needs to be done manually, you gotta put your soul into it. Where's soul in GitHub actions?

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