Strain gauges and weighing cars

rosariote · Post by **rosariote** » 13 December 2014, 16:40 PM

Hi,
I have a question 50kg it is enough to hold the car? Any way I think you going in the right track. Good luck.

FFMan · Post by **FFMan** » 14 December 2014, 0:03 AM

those sensors are 50kg each so 200kg overall when used one in each corner.

the rears tyres put down approx. 135kg the fronts 76kg on my single seater.

GTBecker · Post by **GTBecker** » 18 January 2015, 10:43 AM

FFMan wrote:... 4 load sensors, an hx711 and a 328l...

Get that working?

I have a small pile of HX711 breakouts (the cheap ones that are mislabeled; "GND" is actually the sample rate option, "E-" is the real component ground), and three-wire load cells.

How did you do?

FFMan · Post by **FFMan** » 18 January 2015, 13:28 PM

funny you should ask - its currently driving me insane.

I have a working prototype suitable for light weights which I developed the code on, and managed to get pretty good consistent readings from it.

I then decided to make one platform for 1 wheel, and used a 328l for this and at the moment I can't make it work.

the hx711 seems to be sensitive to timing, it might be this, or it might be a wiring issue. I need to wire the known good platform to the new cpu and vice versa, and for that I need to buy some connectors tomorrow.

watch this space....