Make Your Own Crude Battery Spot Welder With a Car Battery!

In this project I will be showing you how to create a crude but functional battery spot welder. Its mains power source is a car battery and all of its components combined cost around 90€ which makes this setup pretty low cost. So sit back and learn how to build your own with an Arduino and a few complementary components. Let's get started!

Step 1: Watch the Video!

The video gives you all the information you need to create your own battery spot welder. During the next steps though I will present you some additional information.

Step 2: Buy Your Components!

Here you can find a parts list with example seller (affiliate links):

Aliexpress:

1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_d6fhP2B

1x TC4420 MOSFET Driver: https://s.click.aliexpress.com/e/_dWHntEP

1x IRLZ34N MOSFET: https://s.click.aliexpress.com/e/_dZCKNc7

1x Power Relay: https://s.click.aliexpress.com/e/_dTCAQQL

1x Foot Switch: https://s.click.aliexpress.com/e/_dZMZIZD

1x OLED: https://s.click.aliexpress.com/e/_dV3a0cn

2x Car Battery Terminal Adapter: https://s.click.aliexpress.com/e/_dTR8v4L

1x Fuse Holder + 200A Fuse: https://s.click.aliexpress.com/e/_dX8c2IF

2x Copper Nail: https://s.click.aliexpress.com/e/_d8aMiXl

Ebay:

1x Arduino Pro Mini: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x TC4420 MOSFET Driver: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x IRLZ34N MOSFET: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Power Relay: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Foot Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x OLED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x Car Battery Terminal Adapter: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Fuse Holder + 200A Fuse: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x Copper Nail: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

1x Arduino Pro Mini: https://amzn.to/2UOZ6uR

1x TC4420 MOSFET Driver: https://amzn.to/2v1ZcAD

1x IRLZ34N MOSFET: https://amzn.to/2X6zcA3

1x Power Relay: -

1x Foot Switch: https://amzn.to/2X9sysK

1x OLED: https://amzn.to/2USIVN0

2x Car Battery Terminal Adapter: https://amzn.to/2KyNZ5d

1x Fuse Holder + 200A Fuse: https://amzn.to/2Xcuwsx

2x Copper Nail: https://amzn.to/2KyPG2z

Step 3: Build the Circuit and Upload the Code!

Here you can find all information about the circuit and the code for the project. Feel free to use it.

Also make sure to download the Adafruit SSD1306 library before uploading the code to the Arduino: https://github.com/adafruit/Adafruit_SSD1306

Step 4: Do the Power Wiring!

You can get all the components for the power wiring in your next home improvement store. Use my provided pictures as a reference.

Step 5: Success!

You did it! You just made your own crude battery spot welder!

Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab
https://www.facebook.com/greatscottlab