555 Based DC Motor Speed Controller

555 DC Motor Speed Controller project will control the speed of a DC motor connected to it.  This project is built using the popular 555 timer IC.

Specifications

• Power supply input 5-12V DC
• Motor Load Up to 1 to 2Amps
• Onboard preset to vary Duty Cycle from 10% to 95% @ 120 Hz
• Ideal for mini drill and robotics application
• Transistor based output drive with heat-sink
• Diode protection for motor surge
• Power-On LED indicator
• Screw terminal connector for easy power supply input and output-Motor connection
• Four mounting holes of 3.2 mm each
• PCB dimensions 47 mm x 56 mm

Schematic

Parts List

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