December 8, 2022

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Hackaday Prize 2022: A Not-So-Smart Spot Welder

Noom lays off more employees amid CFO departure • TechCrunch

Do it yourself place welders usually use large-run factors that can be a bit horrifying, given the likely for dangerous malfunctions. [Wojciech “Adalbert” J.] designed his capacitive discharge spot welder to be risk-free, easy to develop, and forego the microcontroller.

Several initiatives work wonderful with just a single Li-ion cell, but when you will need a lot more energy, you have received to begin connecting additional cells jointly into a battery. [Wojciech]’s spot welder is created to be just powerful enough to weld nickel tabs onto a mobile with no any overkill. The capacitor financial institution employs nineteen Nichicon UBY 7500uF/35V capacitors, all wired in parallel applying solder wick saturated with solder. They sit atop on a perfboard with metallicized holes to have the higher current.

[Wojciech] has comprehensive every single move of creating the welder, which includes variations to the off-the-shelf relay board and adding a potentiometer to the step-up converter board. The stage of detail helps make this seem like a superior starting up position if you are hoping to hop into the environment of Do it yourself place welders. Safe and sound is normally a relative term when dealing with superior run devices, so be cautious if you do attempt this establish!

Diy spot welders have graced these digital internet pages many instances, which include this 1 developed with safety in thoughts, and this other a single that was decidedly not.