ADS1256 24bit 8 Channel Analog Digital Converter Module ADC Analog to Digital Signal Converters high Precision Acquisition Data Module Board AD Digital Analog Module

The product fails to work right out of the package! I'm hyper paranoid about static electricity and have anti-stat bags and mat to protect devices. Unbagging a product means grounding the outer bag, making sure that I'm grounded properly and then blowing into the outer bag to provide sufficient humidity to ensure no internal static remains. Next the inner bag is removed and opened by cutting it open with an Xacto knife. The RPi 4B is powered down. The leads for the connections are labeled and connected to the device. The device is immediately connected to ground on the RPi 4B. Next all of the SPI links are connected. Lastly the +5V line is connected. Powering on the RPi the pigpio - daemon is started, then the benchmark code run. The code initially reads all the registers (all 11 of them). The image shows the results on a functioning ADS1256. This device returns all zeros! The oscilloscope sees /DRDY strobing, but despite repeated attempts to read registers nothing but zeros exits the device. Clearly the 7.68 MHz clock is running, and most probably AD is producing data. Without the ability to read the data, one has a data sink, not a data source.

NEEDS Documentation. Unit was properly wired to a load cell and RPI-5 by a trained technician. RPi5 running python shows all zeros no matter what channel, singe or differential, sample speed ,or gain setting. Load cell(s) tests good. Returning for replacement. I'll modify my review if it works.

This ADC board made fixing the raspberry pi pico's ADC weirdness almost trivial, and was a significant step up in accuracy. Using this for a solar system voltage/current monitor, and integration into micropython on a pi pico was pretty straightforward. The board is well made, and the part appears to be authentic - it certianly met my expectations and didn't deviate from the data sheet in any way that I could tell.

I'm using this to read eight CTs in an energy monitor I built. It works well, gives good accurate readings, and is fast enough to catch spikes when motors power up. So far it is working well and I'm happy with this module. It was a good way to evaluate this particular ADC chip before going to a full custom PCB design.

Cuando lo probé sentí muy caliente el ADC, por lo que asumí que se quemó, revise la conexión y era correcta, cuando lo estaba revisando vi que la PCB esta mal, mi tarjeta tenia continuidad con GND y VCC!