Review on Enhance Raspberry Pi with High-Precision AD/DA Functions: Raspberry Pi AD/DA Expansion Shield Board featuring ADS1256 DAC8552 Sensor by Eric Garron

Adding this board to your Raspberry Pi is easy, but the software is something else. The Waveshare website has fairly detailed instructions on how to install the C++ and Python code for this board. While I had no trouble getting the C++ board to work, Python 2 and 3 weren't suitable. The more I searched the internet for code, the more I found different versions of guides on how to implement Python code. The guides on the Waveshare website, various resellers, and Github are varied and confusing. I wrote to Waveshare in China and still haven't received a reply. If your goal is to play with software, this board is for you. If you only want to use it for one project, look elsewhere. After a few weeks I hit my head. The PiPyADC code works well with this board and installation was fairly easy. Forget the instructions on the WaveShare website. Rebooted and PiPyADC makes it easy to work with ADC. However, after a few weeks of using the board, reliable readings seem unattainable. Most of the time the values are accurate (either from a battery or a regulated digital source), but every now and then they will either give zero voltage or some absurd value. I'm starting to think the board is faulty due to an intermittent problem.