Now, place 28 pin header to the zero size pcb and solder all the pins. Now place all the components in zero size PC one by one and solder then as per the circuit diagram shown in upper image.
Once all the connections completed, then open the Arduino IDE and open the blink program or any other program to test your board. you can also watch our video for complete demo for it.
Now take FTDI programmer and connect it to the FTDI programming connectors, then connect it to the computer’s usb port.