This project presents a motor stop circuit designed with basic logic gates. The system monitors two input signals (processed with pull-down resistors and capacitors for noise filtering) and evaluates them through a combination of logic comparators and an AND gate.
When both conditions are satisfied:
The AND gate output triggers a transistor, which activates an LED as a visual indicator.
Simultaneously, a relay is energized, cutting the motor's power supply and safely stopping the motor.
The circuit is powered by independent 5V and 9V sources. It uses:
10 kΩ pull-down resistors
330 Ω current-limiting resistor for the LED
A relay coil rated for the control voltage
A diode for back-EMF protection across the relay coil.
This setup is ideal for applications requiring reliable motor shutdown in response to specific logic conditions, ensuring safety and operational control.
