Instructions for use:1) Wide voltage (3V-5V) power supply. The chip is X9C103S; PCB board size: 2.7x1.3CM<br> 2) 10K full-scale potentiometer.<br> 3) The tap of the potentiometer slides between 0-10k for a of 100 (the typical impedance of the potentiometer sliding end is 40 ohms)<br> 4) The digital potentiometer VL and ports correspond to the low and high end of the sliding rheostat, respectively, allowing the input voltage range from -5V to +5V.<br> 5) The digital potentiometer module is accompanied by a test . The code is C language code and is written in sub-modules. The code includes: main function, display sub-function, button sub-function and header file of each module. You can use KEIL4 to open code for testing and learning.<br> Colour:green<br> Material:PC+Metal<br> Package Contents:<br> 1 x Digital Potentiometer Module<br> Only the above package content, other are not included.<br> Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store