MCU Interface circuits Archive

Triac interfacing with Microcontroller

How to interface a high current TRIAC with AT89C52 microcontroller. Here we will connect a load lick AC motor in series with anode of the Triac and Gate is controlled by MCU simple C program. Component required: 1. AT89c51. 2. Programmer. 3. Simple C Program 4. Triac

Interfacing Relay to MCU

RELAY: A relay is a electromagnetic mechanical ON/OFF switch type. It is used to low power (Voltage or Current) circuit to switch high power drive. It is an electric switch that operates like open and close switch. This type of relay is not able to connect directly

Mobile Controlled Robot using Atmega8

Mobile Controller Robot using Atmega8 Robot controlled via Mobile/Cellphone with the help of DTMF (Dual Tone Multi Frequency) module is very essential. Mobile keypad  is used as input control unit of the microcontroller. For controlling the robot, 2 mobile phones are used. One is Connected with robot (it

Wall Follower Robot using ATMega8

Wall Follower Robot using ATMega8 Wall Following Robot using single IR Transmitter and photodiode Receiver module of proximity sensor or obstacle sensor. Use left sensor to detect the wall on the left side of the robot. OPERATION OF THE ROBOT. Step-1. Switch on the programmed Robot. Initially robot right

Edge Avoiding Robot

Edge Avoiding Robot using ATMega8 Microcontroller. Edge avoiding Robot works based on the line detecting IR Infrared Ray LED and Photodiode module. 2 sensors are connected in front of my robot, that detects the edge when running in the forward direction. When runs forward 2 sensors are