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

Diy location welders normally use higher-driven components that can be a bit scary, offered the possible for risky malfunctions. [Wojciech “Adalbert” J.] built his capacitive discharge location welder to be protected, quick to build, and forego the microcontroller.

Quite a few assignments operate wonderful with just a one Li-ion cell, but when you want extra energy, you have obtained to start connecting far more cells together into a battery. [Wojciech]’s location welder is made to be just potent ample to weld nickel tabs on to a cell without the need of any overkill. The capacitor financial institution takes advantage of nineteen Nichicon UBY 7500uF/35V capacitors, all wired in parallel using solder wick saturated with solder. They sit atop on a perfboard with metallicized holes to have the large recent.

[Wojciech] has detailed each phase of creating the welder, which include adjustments to the off-the-shelf relay board and introducing a potentiometer to the stage-up converter board. The stage of depth would make this seem to be like a good commencing place if you’re hoping to hop into the world of Do it yourself spot welders. Safe is generally a relative expression when working with significant driven devices, so be very careful if you do try this construct!

Do-it-yourself place welders have graced these digital web pages numerous situations, which includes this a person developed with basic safety in intellect, and this other one that was decidedly not.