Sparkfun Tutorials Load Cell

To follow this project you would will need the following materials.

Sparkfun tutorials load cell.

Attach a four wire or five wire load cell of any capacity plug openscale into a usb port open a terminal window at 9600bps and you ll immediately see mass readings. One of many kinds of load cells. If you are hooking together four of the sparkfun load sensors using the combinator board you should position the four load sensors equidistant from each other just like the bathroom scales shown in this tutorial. Sparkfun has carried a similar product the hx711 for years.

Bit analog to digital converter is extremely precise and is designed to read the very small changes in voltage that a load cell or scale produce. So if you are looking for one dimensional measurement of weight then i would definitely suggest the load sensors you mentioned. Sparkfun load cell amplifier hx711 sen 13879. It uses an esp32 thing to read load cell data from an hx711 load cell amplifier and display that data on a serial 7 segment display as well as posting it to a python based website that can be hosted locally or on the cloud.

This is the original sparkfun tutorial system used for years for single page tutorials and a lot of other things like projects tear downs and buying guides. It is like the diagram in this stack exchange answer essentially the eight resistances in the 4 half bridge load cells become two resistances per arm of the wheatstone bridge the combinator tries to hook the center taps of the cells to the e e s s of the hx711 and wires up the end taps so that the 4 tension resistances are on opposite diagonals and the 4 compression resistances are on. Yes those are the ones you would want to use with the load sensor compinator board and the hx711 amplifier board. You may not need everything though depending on what you have.

Sparkfun s strain gauge load cell combinator board hooked up to a home scale possible four disc load cell configuration in something like a bathroom scale note. So i have purchased the sparkfun load cell amplifier and this board is a world of difference in other words works perfect this board is repeatable accurate steady no false resets and i like the separate voltage input to the load cell this gives me a full 5 vdc to the load cell for better resolution. Sparkfun electronics the site is undergoing maintenance from 9am 1pm mst saturday october 3rd and will be in read only mode. A tutorial defining what a load cell is and how to use one.

This tutorial is here to help you get started in the world of load cells and their variants. Overview the sparkfun openscale makes reading load cells easy.