Linked Questions

11
votes
4answers
12k views

Digital bathroom scale circuit - how it works?

I'd like to understand how the digital bathroom scales work. I was able to gather that there are four three-wire load cells connected into the Wheatstone bridge as suggested below. The load cells have ...
3
votes
2answers
17k views

Connect HX711 to a three wire load cell

I have the following load cells: I'm using the following HX711 amplifier Every guide i can find on the internet describes how to connect a load cell with four wires to the amplifier. How can i ...
5
votes
1answer
15k views

Arduino Leonardo + 3 wire Load Cells + INA125P – Analog Signal Bounce / Noise

I actually have a software background so my experience in electrical engineering is somewhat lacking. Never the less, I have given my first Arduino project a go and for the most part I am quite happy. ...
3
votes
4answers
4k views

Combination of four half-bridge load cells

I have a kitchen weight scale containing four half-bridge load cells, each cell associated to one foot of the scale. I want to hack it to use it as a pressure sensor and link it to an Arduino ...
2
votes
1answer
10k views

Hacking a four load sensor based personal weighing scale

I am trying to hack a personal weighing scale.I had taken help of this tutorial but the language used in this is not very easy to understand due to the non-standard naming used for load sensor wires, ...
1
vote
2answers
3k views

How to hook up a load cell to an Instrumentation amplifier correctly

I am trying to get load cells connected to an instrumentation amplifier. The load-cells I have are extremely similar to the ones here https://www.sparkfun.com/products/10245. They have 3 wires coming ...
4
votes
1answer
419 views

Difficulties reverse engineering a digital bathroom scale

I apologize if this has been discussed elsewhere and for the length of the post. This is a group project and we plan to take the weight value from the scale and send it via a WiFi connection to ...
1
vote
3answers
874 views

Four Half Bridge Load Sensors outputs highly fluctuating values

I have four half bridge strain gauge load sensors connected in a wheat-stone bridge configuration. I have fed the output of the sensors to the ADC (ADS1230) which is a 20 bit analog to digital ...
0
votes
1answer
515 views

Using 8 half bridge load cells together

In my arduino project, I want to combine 8 half bridge load cells (each has 3 wires, RED, BLACK & WHITE) because i will be weighing irregularly shaped objects and 4 points of contacts may not be ...
2
votes
0answers
100 views

Load cells for 4 legged beer fermenter [duplicate]

I'm a homebrewer. I use 5, 4 legged 200 liter tanks to ferment the beer. I would love to be able to weigh the tanks and have the signal on my PLC to see how much I have in the tanks. Each tank ...