students WROTE:can anyone teach me how to built weight sensor source code using pic16877a ?
Hi,
It is a bit difficult to use PIC to read load cell. Load cell itself is differential signal, the easiest way to do is using differntial amplifier to amplifly the signal and read with ADC. After Amplification, the signal can goes down to negative value, if using single ended ADC, it is not allow negative signal input. you can use amplifier to shift up the DC level before connect to ADC.
For de coding, it is very easy, just read ADC value. ADC value is raw value, so using a known weight to do a calibration. Hopefully it help