Demand Peripherals     Robotics and Automation Made Easy

QPOT: Quad Digital Potentiometer

The Quad Digital Potentiometer (QPOT) uses the MCP4251 to give four computer controlled 10 KOhm potentiometers each with 257 steps.

Features: - Microchip MCP4251 - Four 10K Ohm potentiometers with 257 steps - Typical wiper resistance is 75 Ohms - Uses the ESPI 7474 circuit for reliable operation

Hardware:

The schematic and layout of the QPOT are shown below. The Eagle schematic and board files are available here: qpot.sch and qpot.brd. The bill-of-materials is available here: qpot.txt.