HotTips-3000
Dual-pulse battery tab spot welder using repurposed and rewound microwave oven transformer and solid-state relay.
Components and supplies
5 mm LED: Green
electronics solder
220 ohm resistor
Generic 128x64 OLED I2C
Push button
Rotary potentiometer (generic)
5 mm LED: Red
Power Switch for mains voltage
Wood for Base
Microwave Oven Transformer (secondary rewound with one turn 70mm^2 stranded copper wire)
Grounded power cord (for mains voltage)
300 x 240 - 2mm acrylic sheet
5V USB charger (salvaged)
small crews for plastic
Resistor 220 ohm
Wires for AC and DC circuitry
Arduino Pro Mini 328 - 5V/16MHz
40A solid state relay
5x7cm perfboard
Rubber grommet, various sizes for wire leads
Tools and machines
Oven or Heat source capable of 165 degrees Celsius
Punch (for removing transformer secondary winding)
Drill with various bits and or hole sizer
Wire stripper
Soldering iron (generic)
Cold Chisel (for cutting transformer secondary winding)
Project description
Code
Github
https://github.com/woodrowwiest/HotTips-3000
Github
https://github.com/woodrowwiest/HotTips-3000
Downloadable files
DC circuitry - Front
DC circuitry - Front

AC circuitry and Side View
AC circuitry and Side View

AC circuitry and Overview
AC circuitry and Overview

DC circuitry - Front
DC circuitry - Front

AC circuitry and Side View
AC circuitry and Side View

AC circuitry and Overview
AC circuitry and Overview

DC circuitry - Back
DC circuitry - Back

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