Circuit Documentation

Summary

This circuit is designed to control a DC motor using a motor driver, a potentiometer, a phototransistor, and a toggle switch. The motor driver is powered by a 12V battery and the motor speed is controlled by the potentiometer. The phototransistor and toggle switch are used to enable or disable the motor driver.

Component List

1. Adafruit DRV8833 DC-Stepper Motor Driver

   • Description: Motor driver for controlling DC motors and stepper motors.
   • Pins: AOUT2, AOUT1, BOUT1, BOUT2, ASEN, BSEN, VMOTOR, GND, NFAULT, BIN1, BIN2, !SLEEP, AIN2, AIN1, PWRIN

2. Hobby Gearmotor with 48:1 gearbox

   • Description: DC motor with a 48:1 gearbox for increased torque.
   • Pins: pin 1, pin 2

3. Toggle Switch

   • Description: A simple on/off switch.
   • Pins: L1, COM, L2

4. Phototransistor

   • Description: A light-sensitive transistor used to detect light levels.
   • Pins: C, E

5. Rotary Potentiometer

   • Description: A variable resistor used to adjust voltage levels.
   • Pins: leg1, wiper, leg2
   • Properties: Resistance: 10,000 Ohms

6. 12V Battery

   • Description: Power source for the circuit.
   • Pins: -, +

Wiring Details

Adafruit DRV8833 DC-Stepper Motor Driver

• AIN2 is connected to leg2 of the Rotary Potentiometer.
• GND is connected to leg2 of the Rotary Potentiometer and - of the 12V Battery.
• AIN1 is connected to leg1 of the Rotary Potentiometer.
• AOUT1 is connected to pin 2 of the Hobby Gearmotor.
• AOUT2 is connected to pin 1 of the Hobby Gearmotor.
• !SLEEP is connected to VMOTOR of the Motor Driver, E of the Phototransistor, and COM of the Toggle Switch.

Hobby Gearmotor with 48:1 gearbox

• pin 1 is connected to AOUT2 of the Motor Driver.
• pin 2 is connected to AOUT1 of the Motor Driver.

Toggle Switch

• COM is connected to !SLEEP of the Motor Driver, VMOTOR of the Motor Driver, and E of the Phototransistor.
• L1 is connected to + of the 12V Battery.

Phototransistor

• C is connected to wiper of the Rotary Potentiometer.
• E is connected to !SLEEP of the Motor Driver, VMOTOR of the Motor Driver, and COM of the Toggle Switch.

Rotary Potentiometer

• leg1 is connected to AIN1 of the Motor Driver.
• wiper is connected to C of the Phototransistor.
• leg2 is connected to AIN2 of the Motor Driver, GND of the Motor Driver, and - of the 12V Battery.

12V Battery

• + is connected to L1 of the Toggle Switch.
• - is connected to GND of the Motor Driver and leg2 of the Rotary Potentiometer.

Code

There is no code provided for this circuit.