Open Source Espresso Scale

Want to talk espresso but not sure which forum? If so, this is the right one.
jousis

#1: Post by jousis »

Due to the unreasonable restriction of TOS regarding reproduction of knowledge I do not wish to host any content in this forum.

You are using GPL software and restricting the reproduction of articles which users write for free.
Shame.

For the reader: if you wish, search Google and you will find my content in other sources under GPL or better.
★★ Quite Helpful

happycat

#2: Post by happycat »

Congratulations

I built an IOT scale a few years ago... hx711, loadcell, ABS pipe...

My philosophy is to offload the interface to a wifi device so I had a scale that reported to a web interface with a take and weight button

Glad to see projects like this... I never did anything with mine after my prototype
LMWDP #603

Aida Battle: Indigo Reserve from world renowned Finca Kilimanjaro in El Salvador
Sponsored by Aida Battle
jousis (original poster)

#3: Post by jousis (original poster) »

The best part about open source: it is open :D
Not too late to revisit your project. Copy some or all parts of my design/software and make your own version !

HX711 is crap. Forget about it. Check out ADS1232, your will fall in love.
You can buy breakout boards with 1231/1232 for testing before diving deep to your project.

Yes, it is more expensive, but it is that much better.

max

#4: Post by max »

I love seeing this type of project and am really looking forward to see what comes next!
jousis wrote:Dear X manufacturer ,don't be like them, support open source.
I have been wanting a fancier scale for a while and am waiting for manufacturer X do make it.

...unless I make one first with the help of your work. What, approximately, is the width?

jousis (original poster)

#5: Post by jousis (original poster) »

You can find all the schematics and layer photos on gitlab.
I have two pcb versions.

PRO is 97mm * 32mm
https://gitlab.com/jousis/espresso-scal ... pLayer.pdf

The other one with 7segment display is 99mm*32mm
https://gitlab.com/jousis/espresso-scal ... pLayer.pdf

I will update both PCBs soon with:
-4.7V excitation voltage for increased accuracy when powered from USB
-battery voltage monitoring (now it only warns you with a led)

max

#6: Post by max »

Thanks. In hindsight it seems obvious I should have checked in the "PCB Layers" directory instead of "PCB Images".

Hopefully I have more time for projects soon!

mammamia

#7: Post by mammamia »

This is a fantastic project. And it is OPEN source for everyone. I respect people having mad skills and open mind like you. I personally like simple but reliable product like G-Shock DW-5000 watch. Plz keep Mil-Standard level waterproof in your mind before finalizing your awesome baby. What about a name of C-Shock(coffee shock), haha!

Espresso Vision: the perfect cup of coffee starts with understanding your roast
Sponsored by Espresso Vision
jousis (original poster)

#8: Post by jousis (original poster) »

It is easy to protect this design from water dripping from above.
a) Cut a small plexi glass piece exactly as the monitor cutout (depends on your version) and glue it. Then plasti dip the whole top with any color (not the plexti glass though, you need to see the display :D )
b) You can spray 3-4 layers of clear plasti-dip on the whole top surface, then mask the monitor and spray another 3-4 layers of any color plasti dip you like.
c) your idea here...

The top case "hugs" the bottom* so any water dripping won't get inside.
Even it it finds its way through, you have the schematics, find which component is fried and replace it !


@max
nothing is obvious with my directory structure...I need to work on that. Sorry.


*to be fair, kudos to the "unnamed manufacturer with proprietary ble api" for the amazing case design.
I guarantee you others will copy it if the market opens up.

jousis (original poster)

#9: Post by jousis (original poster) »

Due to the unreasonable restriction of TOS regarding reproduction of knowledge I do not wish to host any content in this forum.

You are using GPL software and restricting the reproduction of articles which users write for free.
Shame.

For the reader: if you wish, search Google and you will find my content in other sources under GPL or better.

Elfmaze

#10: Post by Elfmaze »

Not too familiar with github, but I know how to work a 3d printer and can muddle through Arduino programming and a soldering iron. Are you selling the completed PCB boards?