Using ultrasonic sensor without arduino
Parts list:
IC 555
IC KA2284
LED(5pcs)
Ultrasonic receiver & transmitter
Resistor 1K
Resistor 2.2K
Resistor 10K
Resistor 100 ohm
Potentiometer 10K (2pcs)
Capacitor 10uF (4pcs)
Capacitor 3.3nF
Transistor 2N2222
Buzzer
There are 2 ways to using Ultrasonic sensor without microcontroller:
First way, the buzzer turns ON when you put your hand near the sensor
Second way the LED bar show you the distance level between the sensor and the objects.
Video:
More information in the video
