Hello everyone. I am designing a project using the ADS1235 as the ADC for converting load from a strain gauge connected in full wheatstone bridge (amplified and filtered by AD8557 opamp), controlled by a STM32F405 MCU. The device is powered via USB using a FDTI (3.3V), and communicates using the MCU serial ports.
I am having trouble with the device, since it is perfectly functional and detectable from the serial monitor, and when the load is connected to the pads I lose communication with the ADS, and the serial monitor only shows "-1" instead of the converted data.
Any thoughts on how to solve this issue, or where the problem might be? I appreciate the concern in answering this question.