Comimark X9C103S Digital Potentiometer Module for Arduino (4Pcs)

Just tested. Only has 31 tap points instead of the 100 listed on the X9103S datasheet. Buyer be aware.

nice product nice price... individual chips are more expensive.... generating the control timing on a teensy 3.6 or 4.1 is a small bit of code.... well maybe a medium amount of code...

Spent hours trying to figure out why this was only incrementing up to 30 resistors. It does the full range; have her, not the 100 resistors that is specified. Everything goes in multiples, which only support a resolution of 30 units across the floor range.According to the Arduino support boards, there’s a chance this was either a flawed part or something else. I tried the entire batch I received, they all behave the same.

Mine arrived individually wrapped, in anti-static bags. They were the correct dimensions, and the header pins that were shipped matched the board layout, unlike the pins shown in the product pictures. My chips were still labelled, and resistance was within specification tolerance (+/- 20%). It took a little bit of learning on my part, but I was able to control the resistance up and down as needed. Search online for tutorial videos. There are some really in-depth ones available.

Fewer positions than advertised.