HiLetgo 2pcs X9C104 Digital Potentiometer Module 5V 40R~100K Adjust Bridge Balance for Arduino

These digital potentiometers do not have 100 steps with 1k ohms between. The two I received have around 30 steps and average around 3k ohms between. They are very inconsistent. The seller did not respond to my inquiry.

be aware one end needs to be grounded it can not be a floating digitally controlled pot...

When I began setting up the X9C104 Digital Potentiometer, I was surprised to find the spacing between the two rows of connection pads was about 0.455 inches, not an exact multiple of 0.1 inches (2.54 mm) as used by a standard breadboard. I’m not sure why they didn’t just expand the separation to 0.5 inches. To align the X9C104 with the holes in the breadboard I had to modify the header pins slightly.The X9C104 Digital Potentiometer was fairly easy to setup and program. There is adequate information on the internet to get you going. I found the examples provided by Ralph Bacon on GitHub to be very useful.The X9C104 provides 100 steps (0 to 99) of attenuation. Using the 100kΩ version, step 0 measured 26.9Ω and step 99 measured 107kΩ. The steps in between were fairly linear. Reference the resistance plot image.AC signals above 1 kHz measured at the output of the X9C104 rolled off rapidly, rendering this device unusable for the function generator I was building. This was due to C2, C3, and C4 being in parallel with RH and ground, RL and ground and RW and ground, respectively. Removing these three capacitors corrected this problem.After working around the limitations of the X9C104, I found that this device could be used for an audio signal generator project. However, I will try to find a more suitable digital potentiometer before making a final selection.

As others have stated, when stepping through the counts, it hits max/low readings at about 30 steps instead of the 100 described!Would not recommend this mfr!

This should have 100 step resolution to control 0 - 1025 counts in arduino.Actual data shows this max out at 30 step, and keep high between 30 - 99 steps. No rough resolution to use for control.

Behaves as expected except for only around 30 reliable steps as controlled by my Arduino- which is a pretty big deviation from 100.

This digital pot should have 100 steps, but the actual product only has 33 steps.

The chip is labelled X9C104S, but does not behave like one. It has only 33 taps and maxes out at 70kOhms.