Smart spot welder design with a user programmable Arduino weld pulse width control interface. No high current solenoid switching needed and no bulky lead acid batteries involved.


Disclaimer: This video is not affiliated with or sponsored by any seller, please conduct your own research before making any purchase.

Items used.
1. Arduino micro.
https://www.amazon.com/HiLetgoAtmega...

2. Microwave oven transformer (used scrap electronics)

3. Gauge 4 jumper cables (Lowes/Home depot)

4. 10A 12V relay (used scrap electronics but any 10A 12V relay will work)
https://www.amazon.com/ComimarkOrigi...


5. 5V buck converter
https://www.amazon.com/ZixtecLM2596...

6. 12V boost converter
https://www.amazon.com/HiLetgoAdjust...

7. IRF740
https://www.amazon.com/BOJACKIRF740...

8. Other materials can be sourced from any local hardware store.