Hi, I am using a series of load cells connected to HX711 amplifiers to measure forces. I wanted to use more load cells than I am able to connect to an arduino, so we got a USB-6509 DAQ from National Instruments (seen here: https://www.ni.com/en-us/shop/model/usb-6509.html) to collect the signals. I would like to interface with the device using matlab, but I am having trouble reading out the digital signals from the amplifier. I have been trying to replicate the code given in the HX711 arduino library but the data that I get out is just a string of 1s (there are no zeros mixed in). Do you have any suggestions as to how I might make this work? What needs to happen to the amplifier to get actual data out of it?
i have a similar project and im looking at a multiplexer that is also sold on this site, SparkFun 16 Output I/O Expander Breakout - SX1509 and or SparkFun Analog/Digital MUX Breakout - CD74HC4067