I am looking for a load cell to measure the weight of my bee hives. I have to use an ESP32 (bluepill) due to low consumption and deep sleep mode. There I have only 3.3 voltage level available. Is it possible to operate the 50 kg micro load cell (data sheet states 5 volt operation) with only 3.3 volt?
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Hi @Nobiha and welcome to our forum.
It is not recommended to use voltage other than nominal.
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If you feed the ESP32 with a 5V supply, you can use that to feed the load cell too.
HTH
o_lampe
//edit
just read the description of the 50kg load cell. It’s a simple wheatstone bridge, (without any amplifier?) You’d need the recommended phidget bridge too, but I doubt, that the ESP is able to communicate with the USB port of the bridge. ( Windows , Mac and Linux only)
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