Hi there, I am trying to get a strain gauge working with the HX711 load cell amp. I posted about this a few months ago and got told to get some high precision resistors for the wheatstone bridge. I have now obtained these ( https://www.digikey.fi/product-detail/en/vishay-foil-resistors-division-of-v…

MarkT: Circuit diagram? Hi Mark, [image] hopefully that link works for you since there's some glitch here that won't let me post images. Cheers.

A Sparkfun HX711 board has two power connections. One for the the analogue part and one for the digital part of the chip. You seem to only have connected the analogue supply pin. Leo..

Wawa: A Sparkfun HX711 board has two power connections. One for the the analogue part and one for the digital part of the chip. You seem to only have connected the analogue supply pin. Leo.. Hi Leo, thanks, I now tried shorting the VCC and VDD pins and connecting both to the 5V on the arduin…

Measure E+ (Excitation voltage for the bridge). It should be about 4.25volt. Measure the two outputs of the bridge. They should be about half of E+ Measure between the output of the bridge. It should be close to zero volt. Leo..

Wawa: Measure E+ (Excitation voltage for the bridge). It should be about 4.25volt. Measure the two outputs of the bridge. They should be about half of E+ Measure between the output of the bridge. It should be close to zero volt. Leo.. Hi Leo, Excitation voltage is about 3.65 Volts when I …

Multiplier7: Excitation voltage is about 3.65 Volts... Get that sorted first. It should be 4.25volt, ±0.05volt. Check the VCC/VDD voltages, and check you voltmeter. Leo..

Strain Gauge with HX711 Load Cell Amp

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MarkT January 15, 2021, 1:49pm 2

Circuit diagram?

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Strain Gauge with HX711 Load Cell Amp

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