Arduoinu + 2 load cells

Community Projects
1

hello

I am trying to use 2 load cells, the load cells that i have, have 4 wires.

i found those two products:

SparkFun Load Sensor Combinator (Ver. 1.1):

https://www.sparkfun.com/products/13878

SparkFun Load Cell Amplifier - HX711

https://www.sparkfun.com/products/13879

The amlifier can be connected only to one load cell.

And the combinator, by the hookup guide, need to be connected to four load cells, each 3 wires.

is there any other solution than connecting 2 amplifier to arduino?

2

When using load cell combinator do i have to use all the 4?

what if i have only 2 load cells. what is the best way to connect them ?

with single combinator or two amlifiers ?

thanks for the help

3

I would recommend 2 HX711’s. I had just the opposite problem: 4 three wire load cells but I wanted to read each one separately. I used a multi-turn trimpot to create the other half of the bridge for each load cell and then used 4 HX711’s. It worked out great.

4

Way late, but see https://forum.sparkfun.com/viewtopic.php?f=14&t=44748