DIY Spot Welder made with an Arduino and a Microwave transformer.
TODO:
- Debounce the switch
- Build electrode holders
- Add foot pedal switch
Parts Include:
- Microwave transformer
- secondary rewound with single turn 70mm^2 stranded copper, coated with heatshrink.
- ArduinoProMini
- OLED Display
- Potentiometer
- Pushbutton
- Green and red LEDs
- 220 Ohm resistor x3
- Wires and heatshrink
- For Mains voltage and DC circuitry
- 50mm x 70mm perfboard
- 5VDC 850mA switch mode USB power supply
- Solid state relay
- 40 Ampere 24-380VAC (3-30VDC input)
- Powercord, powerswitch, and enclosure
Most code my own @intentionalrobots Woodrow Wiest - https://www.instagram.com/intentionalrobots/ git - https://github.com/woodrowwiest/HotTips-3000 arduino - https://create.arduino.cc/projecthub/woodrowwiest/hottips-3000-94f4a8/embed?use_route=project
Much inspiration gleaned from:
Masomtob, Manop & Sukondhasingha, Rawitat & Becker, Jan & Sauer, Dirk. (2017). Parametric Study of Spot Welding between Li- ion Battery Cells and Sheet Metal Connectors. Engineering Journal. 21. 457-473. 10.4186/ej.2017.21.7.457. https://www.researchgate.net/publication/322394238_Parametric_Study_of_Spot_Welding_between_Li-ion_Battery_Cells_and_Sheet_Metal_Connectors
Spot Welder Timer Example
Check out the instructable here - http://www.instructables.com/id/DIY-Spot-Welder-From-Microwave/
Jack Davies, http://jackdaviesdesign.com <<< >>> http://undergroundengineering.co.uk
Would love to see if you make one!