i built the world's worst IOT coffee machine

⚠️ DONT TRY THIS AT HOME! 120V AC IS DANGEROUS! RISK OF ELECTRICAL HAZARD! ⚠️

Regular coffee machines are BORING. Sure, you can get a coffee machine with a timer built in, but they're EXPENSIVE.

In this video, I use an ESP32 to wirelessly enable my coffee machine. I write a light-weight HTTP server that lets my phone connect to the ESP32, and power-on the coffee machine using an AC-DC relay and a simple GPIO pin.

🔥🔥🔥 SOCIALS 🔥🔥🔥

[AlessioSangalli]

Kudos for implementing the web server yourself and not using a library, that is very appreciated. However hotlinking a binary resource off Wikipedia is questionable 😂

[Draenei]

I always wanted to do this, but since I don't have an EE background, I never had the courage to mess with real appliances, like a coffee machine, since I'm not really adept in electronics. But this video was extremely helpful, so I might try to replicate it!

[hyacinthem]

I would be so afraid of a bug that would let the machine on and set my house on fire

[pfifo_fast]

I like the part where you forget to put water and fresh grounds into the coffee pot and you wake up in the morning with no coffee and then proceed to crack your hot decanter when you try to fill it with cold water.

[nothappyz]

I found your channel while studying for an exam and I've loved you since. You put some really quality work out there that I can't stop watching

[mathiasensimon]

"Nothing is worse than waking up" should have ended I there

[reed]

Safety warning! Live high voltage wires, potential issues if no water in pot or it fails to turn off. No led means no visual indicator of power.

[alexandrechaminas]

Great hack!
Have you considered any upgrade concerning HTCPCP protocol support ? Always nice to implement this functionnal joke

[thespazticator]

Why not leave the manual switch and put a relay in parallel, so you can choose whether to have it automated or manual?

[jacobholder]

This is exactly what I expected. This is amazing! I'm currently trying to make a furnace for melting metal and this showed me basically everything I needed. Thank you and enjoy your coffee!

[andyniemic]

Why 5V Relay, not a 3.3V Relay? Things that are fun to add: Check to see if there is water (Weight sensor), Check to see if coffee has been replaced (Button attach to the coffee grind's lid, and the ESP32 keeps track that the coffee grind's lid has been open since it brewed the last coffee), coffee pot detector - Simple IR proximity sensor, Anit-Fire hack - Temperature check.

[glennmiller]

Good hack. And you made it look like something even I could do. Thanks.

[PaulGrayUK]

Now to fit the ESP32 into the coffee machine and tap the same power input, so just one plug.

[AlessioSangalli]

I hacked my gelato machine with an ESP32 too 😅 with torque sensing capability to figure out when the gelato is ready.

[Victoria-fsjo]

Last time I used a relay, I almost blew up my university's computer but yeah, they're really useful and awesome

[johanngambolputty]

Nice 'smart' coffee maker, you forgot the bit where it sells your data to Facebook 💩

[alexishart]

That is awesome i never thought of that for a coffee machine with a timer built in.

[kekons]

this is what i live for, projects like these are the best

[odineye]

Incredible production value! Such a cool idea, the sky is the limit for you man!

[Yupppi]

Now you just need the tiniest Raspberry to put inside the frame out of sight and teach the coffee machine to grind fresh beans on the spot.