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Firmware for the Digital Potentiometer [0110123A] The PIC16F15214 microcontroller firmware (HEX files) plus C language source code & MPLAB X project for the Digital Volume Control Potentiometer. We suggest that you only use the 32dB gain version of the software if you need the extra gain. If you are not sure, use the standard version. Cat No SC0136. Price: Free Files: Volume_Control.X.zip (ZIP contains .hex and .c files plus MPLAB X project; 298.9KB) Volume_Control 32dB gain.X.zip (ZIP contains .hex and .c files plus MPLAB X project; 446.2KB) Related to: Project: The Digital Potentiometer (March 2023 [print issue] [online issue]) Other items relevant to this project: Digital Potentiometer PCB (SMD version) [01101231] ($2.50) Add to trolley Digital Potentiometer PCB (TH version) [01101232] ($5.00) Add to trolley PIC16F15214-I/SN programmed for the Digital Potentiometer [0110123A.HEX] ($10.00) Add to trolley PIC16F15214-I/P programmed for the Digital Potentiometer [0110123A.HEX] ($10.00) Add to trolley Digital Potentiometer kit (SMD version) ($60.00) Add to trolley Digital Potentiometer kit (through-hole version) ($70.00) Add to trolley Digital Potentiometer PCB patterns (PDF download) [01101231-2] (Free) Add to trolley