Load cell bracket

by b2vn, published

Load cell bracket by b2vn Oct 29, 2015


Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

1169Views 239Downloads Found in Electronics


I bought some of these load cells to weigh the amount of beer I have left in my draught beer system.


And then I needed something to mount them in, so I designed this bracket :)

I have attached four of these brackets under a piece of wooden board with self cutting screws.

More from Electronics

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Hi and thanks!
I'm making a keg scale as well but made a new model in order to fasten the load cells to the plate in a different way. Posted it as a remix of this since it was largely based on your design.
My setup will be very similar to your. I'll be using four load cells connected to an HX711-amplifier. I wish that I had read your comment before ordering one since I didn't get a shielded one, oh well guess I will have to do some noise reduction via software instead :)

That is exactly what I needed. Thank you very much !

You are very wellcome :)

I too am looking to build a scale for my homebrew keg setup. Do you have additional information on how you built the scale itself?


Sure. There is not a lot to tell. The project is on halt until I get the bar extended (which seems to have been given a rather low priority). But I had the prototype up and running with just one scale.

For the main computer I have used an ESP8622 connected to an HX711 strain gauge amplifier. Lady Ada has a nice guide to get started with the ESP, https://learn.adafruit.com/adafruit-huzzah-esp8266-breakout/using-arduino-ide. The ESP module I have has a really bad antenna. I have about 5m range then the fridge is closed. Maybe consider one with an external antenna.

I recommend you get an amplifier with a shield (like this one http://www.ebay.com/itm/HX711-Dual-channel-24-bit-A-D-Conversion-Weighing-Sensor-Module-Metal-Shied-beus-/201331721236?hash=item2ee04e4414:g:mXcAAOSwEK9T6bSp), since it otherwise really picks up a lot of noise (from the wifi??).

The four load cells is connected in a wheatstone bridge (like this http://electronics.stackexchange.com/questions/174560/how-to-set-up-load-sensor-in-a-full-bridge-with-amplifier) to the amplifier.

The brackets from this design was then just glued under a piece of MDF and is standing on top of a laminated chipboard in the fridge. I also printed a ring to attach on the topside of the MDF, to ensure that the keg (cornelius 19l) is centered and not rubbing against the others or the side.

I remember that I read something about drift in strain gauges, unfortunately I don't remember where, but they have a lot of drift just after you load them. Therefore it was recommended for a setup like this, where you have a constant load on for a very long time, that you tare the scale 10-15 minutes after you put a new keg on.

I have not done a lot for the website yet. The "progress" bar is made with a table, something like. '

  '. This will definitely be changed... at some point in time.... maybe...

You can see a lottle more of the setup in this design: http://www.thingiverse.com/thing:1117059

Please let me know how the project turns out :)

Proto PCB enclosure
by b2vn

Ovv, forgot one detail. I drilled a rather big whole in the center of the MDF plate down through the chipboard and put a bolt through, without tightening the nut. This ensures that the MDF plate does not stay attached to the keg when I take it out of the fridge.

And MDF is not the ideal choice for something with constant load on, since it warps over time. When I make the next version I will either use plywood or aluminum.