Ask HN: Who wants freshly roasted coffee?

#1

Post by lamroger » Wed, Apr 16, 2025, 3:24 PM UTC

Hey y'all - I consider myself a tinkerer and in the vein of doing things that don't scale, I want to send you coffee that I roast.

I have a couple bags of green beans to choose from.

If you want to print a picture or your art on a label, send me an image!

If you prefer a roast level, let me know too.

* Colombia, Finca La Riviera Sudan Rume * Colombia, Finca La Rivera Gesha * Colombia, Finca Milan Anaerobic Passionfruit Co-ferment * Vietnam, Lostus SHG * China, Yirong * Mystery Blend

It's free (or send a donation to charity). Send me an email - me@.com or msg me on LinkedIn - https://www.linkedin.com/in/lam-roger/

Here's a video of me roasting on my patio applying some object detection to the beans to get the average color - https://www.linkedin.com/feed/update/urn:li:activity:7123095011449085952/?originTrackingId=Eqpm7A0vQ1Cu2G1j7msaYg%3D%3D

Thanks!

Re: Ask HN: Who wants freshly roasted coffee?

#2

Post by gus_massa » Wed, Apr 16, 2025, 3:39 PM UTC

Clicky video without the tracking https://www.linkedin.com/feed/update/urn:li:activity:7123095...

Link to the repo of the program in the notebook https://github.com/lamroger/artisan-websocket-bluedot

> applying some object detection to the beans to get the average color

Do you have a technical write up? Is the object detection method explained in the repository? I think a slightly more technical artice would get more traction here. But don't forget to include the video!

Re: Ask HN: Who wants freshly roasted coffee?

#3

Post by lamroger » Mon, Apr 28, 2025, 2:19 AM UTC

gus_massa wrote: post #2

Clicky video without the tracking https://www.linkedin.com/feed/update/urn:li:activity:7123095... Link to the repo of the program in the notebook https://github.com/lamroger/artisan-websocket-bluedot > applying some object detection to the beans to get the average color Do you have a technical write up? Is the object detection method explained in the repository? I think a slightly more technical artice would get more…

Hey! Appreciate the links and sorry for the late reply. Thought this just got grabbed by the spam filter when I wasn't seeing it.

I have a small writeup here: https://lamroger.com/blog/2024-03-10-coffee-roasting-tech/ and the video here: https://www.youtube.com/watch?v=shMMuNuH3cE

But short answer is I finetuned a model with the help of Roboflow, grabbed the pixel values in the bounding box and avg'ed the values.