i have the load cell of 100kg i have a ADC NAU7802. i have to calculate weight through this ADC. can anyone have idea how to convert ADC value to weight.
Tell me your sensitivity of our Load cell and also the excitation voltage range... Your ADC resolution..Supply Voltage.. Please give the details fully.. Go through the data sheet NAU7802 and see the how many analog channels it provides.. take the output of your load cell wires into the analog channel pin of your ADC.. Connect to the host via SPI interface.. And do the calibration of the load cell for your requirement like 100 kg after the offset process.. I hope you understand the layout..Go ahead
sensitivity of our Load cell=2mv/v excitation voltage range = 0-5 volt Your ADC resolution =24 bit Supply Voltage= 5v
2 analog channel i used only 1 channel
i used i2c protocol
without load cell when i read the value from the ADC it give me more fluctuation
an open input will, unless you are within a Faraday cage, give "more fluctuation"
anyhow I have some doubts here, since the code for a weigh scale, with which you have problems, is fairly simple the issue to make a reasonable precise scale is LAYOUT, LAYOUT, LAYOUT
Erik
View all questions in Keil forum