Amol_Week 10

In my final project I have to drive lab machines like 3D printed, milling machine etc so I had decided to use SSR(Solid State Relay)as an switch to turn ON and OFF the machines.

As the current requirement of these machine is high, I have selected an SSR with 25A current rating. I have selected an Satronix SSR.

SSR has 4 terminal - To turn SSR ON we have provide +ve DC voltage and connect the output terminal of SSR in series of AC supply.

Using transistor circuit for driving SSR. When RLY pin is high SSR gets 12V supply.

Have modified the circuit diagram a bit for interfacing SSR. Switch will be used for turning ON the SSR.

Adding frame

Switching to board layout

Milling and soldering the board

Using fabmodule .rml file was generated and board was milled.

Stuffing the board

Wring C code using Atmel Studio.


   /*
 * Amol_Input_device
 *
 * Created: 06-May-17 10:38:08 AM
 * Author : Amol Wadkar
 */ 

//#defines
#define F_CPU 1000000  //Define clock speed as 1Mhz


//Include Header 
#include     //Import header file required for AVR microcontroller
#include   //Import header file required for delay function


int main(void)
{
	DDRA = 0b10000000;  //set PA7as output & all other pins as input
	while (1) //Repeat the below actions continuously
	{
		if((PINA & (1<<3))==0b00000000) //When switch is press
		PORTA |= (1<<7);// Set PA7 high (Make SSR ON)   
		else
		PORTA &= ~(1<<7);// Set PA7 low (Make SSR OFF)
	}
}

Program the board using Arduino.

Connecting SSR module to the board

Working : Whenever switch is pressed SSR turns ON(There is a LED indication on SSR which indicates whether it is ON or OFF)

Output files

Board Schematic

Board layout

C code

Output Devices

Assignments

Milling and soldering the board

Wring C code using Atmel Studio.

Output files