Circuit Documentation

Summary of the Circuit

This circuit is designed to control the speed of a DC motor using a 12V PWM (Pulse Width Modulation) Speed Controller. The speed controller modulates the power supplied to the motor, allowing for adjustable speed control. The circuit is powered through a 2.1mm DC Barrel Jack, which is commonly used for supplying power from an external adapter. The PWM controller interfaces directly with the motor and the power source, but there is no microcontroller or embedded code involved in this particular circuit design.

Component List

DC Motor

• Description: A standard DC motor that converts electrical energy into mechanical rotation.
• Pins:
  • pin 1: Positive power supply
  • pin 2: Negative power supply

DC 12V PWM Speed Controller

• Description: A controller that allows for speed regulation of a DC motor by adjusting the pulse width of the supplied voltage.
• Pins:
  • S: Signal input for external control (not used in this circuit)
  • +: Positive power input
  • -: Negative power input
  • • Output: Negative output to the motor
  • • Output: Positive output to the motor
  • SC/PG: Speed control / Pulse generator (not used in this circuit)
  • PWM: PWM signal input (not used in this circuit)
  • Initial Speed Regulator: On-board speed adjustment (not used in this circuit)

2.1mm DC Barrel Jack

• Description: A power connector that is commonly used for connecting external power supplies to electronic devices.
• Pins:
  • switch: Switch pin (not used in this circuit)
  • sleeve: Negative power connection
  • center: Positive power connection

Wiring Details

DC Motor

• pin 1: Connected to the + Output of the DC 12V PWM Speed Controller.
• pin 2: Connected to the - Output of the DC 12V PWM Speed Controller.

DC 12V PWM Speed Controller

• + Output: Connected to pin 1 of the DC Motor.
• - Output: Connected to pin 2 of the DC Motor.
• +: Connected to the center pin of the 2.1mm DC Barrel Jack.
• -: Connected to the sleeve pin of the 2.1mm DC Barrel Jack.

2.1mm DC Barrel Jack

• center: Connected to the + pin of the DC 12V PWM Speed Controller.
• sleeve: Connected to the - pin of the DC 12V PWM Speed Controller.

Documented Code

There is no embedded code provided for this circuit as it does not include any programmable components or microcontrollers. The control of the motor speed is managed purely through the hardware of the PWM Speed Controller.