DIY Arduino LM393 Speed Sensor Robot Circuit Diagram
DIY Arduino LM393 Speed Sensor Robot Circuit Diagram
The complete circuit diagram of this Speed and distance sensing robot is shown below. The Bot consists of Arduino Nano as its brain, the two DC motors for the wheels is driven by the L298N H-Bridge Motor Driver module. The Joystick is used to Control the speed and direction of the bot and the two speed sensors H206 is used to measure the speed, distance and angel of the bot. The measured values are then displayed in the 16×2 LCD module. The potentiometer connected to the LCD can be used to adjust the contrast of the LCD and the resistor is used to limit the current flowing to the backlight of the LCD.
The complete circuit is powered by a 7.4V Lithium cell. This 7.4V is supplied to the 12V pin of the Motor driver module. The voltage regulator on the motor driver module then converters the 7.4V to regulated +5V which is used to power the Arduino, LCD, Sensors and Joystick.