• This is a Mosfet Based Spot welder made using IRFB7430 mosfet paired with a OLED display, rotary encoder and ATMEGA328P IC. This is a projet inspired by This Project
• This is a two PCB Design and made such that one can order the PCB as a whole and has to separate the PCBs by Cutting manually to save cost.
• It has two Aluminum parts that attach to the PCB since the circuit will be dealing high current of about 400A in a single pulse
• The pulse timing can be adjusted using the rotary encode and is very simple to use.
• It has a onboard programmer for the ease of programming the board
• Flash using Arduino IDE with ATmega328P bootloader and 9600 baud rate
• The Code is not tested yet on my design

• IRFB7430 Mosfet
• Atmega328p as the MCU
• 0.96 128x64 oled display
• ABR-PR-12APBTX90 Amaron 12v 9Ah Battey for high short pulse current
• 6AWG wire to handle the high current
• 4010 fan
• 2mm solid copper wire

We need to connect the GND of the Battery from the IN sign and connect to the U shaped aluminium portion followed by the rectangular aluminium block as one of the probes the other probe will the positive terminal of the battery.