I made an internet controlled coffee roaster using ESP32 and Arduino IOT! (1000 subscriber special)

[@KlavdijaGorisek]

Best intro ever 😂

[@thecircuithelper]

Very dramatic 👍

[@jb8622]

Calling the Feds. You've gone rogue Circuit Helper

[@thecircuithelper]

I’m an addict, what can I say….

[@Pequenastonterias]

😂😂😂

[@johnnywintery8608]

Congrats on reaching 1000 subs, I’ve been watching from the start!! Looking forward to more videos like this, would be really interested to learn more about how to control things using microcontrollers etc….

[@thecircuithelper]

Awesome, thanks for watching! I have quite a few projects like this on the go at the moment, hopefully get those videos uploaded soon! I’ve also been watching a few videos on how to roast coffee beans, so I’m going to revisit this project in the near future!

[@TheUn4givN]

What went wrong: 1. NEVER EVER drink coffee straight from roasting, it has to degas and develop for at least 5 days (Sidamo I would suggest even 8) 2. Roasting requires knowledge, drying phase should not be neglected, also don't be cheap on the developing phase (you should finish with at least a 12% reduction of weight from the green beans) 3. Your portafilter basket was wet, it has to be dry before you put the coffee there 4. you are using bad WDT, too thick needles, or use 0.3/0.25mm needles, or don't use it at all... you are causing a lot of channelings

[@thecircuithelper]

All good points! I knew about the degassing… but didn’t want to wait for so long to finish the video! For the different phases, I kind of knew about these but my volume of beans was so small and thermocouple not really in the right position probably meant I missed the different phases. Think my biggest problem was lack of movement of the beans during roasting, they basically stuck if you put more than a few g’s in! Planning to do an update video in the future using a much more powerful fan. Interesting point about the WDT, didn’t know that. I use the one shown every day, so will look at getting something with finer needles. Cheers

[@fehringerc]

I know nothing about roasting coffee, but you should look into Arduino over-the-air updates (OTA). You only have to program the esp32 once. Then you can upload new code over wifi, so you don't have to plug it back into your computer.

[@thecircuithelper]

That’s a good suggestion, OTA updates are so convenient, I use them for my coffee machine. Annoyingly, on Arduino cloud the OTA programming feature is something you need to pay for 😡! This is another reason not to use it, but on the flip side, it is easier than trying to setup a web server on the esp32 with web sockets etc…

[@factoryblack181]

I gotta ask, did you pay someone on fiver to record the intro for you? If so can i have the link?

[@thecircuithelper]

I used elevenlabs (elevenlabs.io/) for the audio, it’s a free AI text to voice service. It didn’t have quite such a dramatic voice, but I found something close to what I wanted and then just slowed the speed down in premier pro a little.

[@muhammadalbani5492]

Hi friend, I'm new to programming and I have a NodeMCU ESP8266 that I've never used, can I use it to make a coffee roaster like the one you made? If the answer is yes, will the programming be the same as the one you created?

[@thecircuithelper]

Should work fine, the programming will be largely the same, there are many examples for PID, PWM and temperature sensors for the ESP8266. I’m not sure the Arduino cloud works with the 8266, you’d have to check, but you could just send the sensor data and control signals via serial or WiFi to a computer. Thanks for watching!!

[@muhammadalbani5492]

@@thecircuithelper okay thanks for the explanation

[@col0342]

Time to contact IEFT and reserve HTTP 219 as the standard return code for "I'm a coffee pot"

[@thecircuithelper]

😂