very informative video, thanks for sharing

Hello, do you have a link to the board that you blew up? could it be that what you think is a charging port actually is a footswitch port? Regards

7:37 there was smoke released through the pcb hole between two red cables, maybe a component has blown around there? maybe that's why the "lightsaber" spot welder is not working properly since?

Check out the ebay pics for the second welder you got the wrong connections.cheers

@johnconrad5487

3 жыл бұрын

Thats what I was also thinking. he is going thru the diodes of the MOSFETs and there is no current limit or anything so when he makes contact the battery is just pouring current thru the Nickel

the top positive terminal sits ABOVE the pop switch. You didn't burn through the case. 😃 that cell should still be fine.

I am considering using a starter motor solenoid on a lead acid AGM battery to well .15mm x 8mm pure nickel. Have you tried that yet ? Use a momentary switch to operate solenoid through copper welding rods.

You needed the connector plugged with 12v dc to power the logic of the board. You tried without connector and the mosfet went short circuit

Perhaps that the reason for the little plug that you did not use, to time the pulse(?) Also even though it burned thru the tip of the battery, there is nothing wrong with it. You can still use the battery.

if you had blown through the negative bottom of cell you would maybe injure yourself or indeed have a fire the positive end is sort of double skinned to accommadate the (cid) wear gloves and eye protection.

so the BIFRC turned out to be the best ! Ever try Supercapacitors ? Alibaba is selling used 2.8 V 3000 F units for $10.

It's just the cap. Maybe a lower setting?

looks like the diodes in the mosfets are allowing the current to flow backwards.

@sidlori1592

Жыл бұрын

Doesn't work that way ;-). They allow REVERSE power flow through, but the metal strips aren't generating power. Even if it was, it'd get gated back into the battery.

Usually not enough power to blow fets

Is it possible that the barrel jack could be for a foot switch and the little switch could be what turns that on...?

@stevenc22

3 жыл бұрын

No I checked, the barrel Jack is for charging a capacitor bank

@CookieTube

3 жыл бұрын

No, as @Stevenc22 says, it is for charging a cap bank if you use one to power the unit. However, v2 of this PCB (which Stevenc22 shows in this video) does have a foot switch option!! You can solder one in the lower left corner of this pcb. For more detail, also take a look at the Chinese listing on Taobao.com: item.taobao.com/item.htm?id=624450584422&ns=1#detail See also my comments in his follow up video: kzread.info/dash/bejne/kZl5sdOefrWyoqg.html&lc=UgwJwrjLQ4RiqJWw6OV4AaABAg.9HYOCKGBenv9HnKnZLCSpb and kzread.info/dash/bejne/kZl5sdOefrWyoqg.html&lc=UgwJwrjLQ4RiqJWw6OV4AaABAg.9HYOCKGBenv9Hnes1QFlge *But indeed two major important points:* 1) He needs to *wire the pcb up correctly* , lol. He didn't in this video and as such possibly damaged the board. 2) *When using 12V, like his battery he used, a 25V 10000uF capacitor must be connected in parallel with the battery +- pole/line* to prevent possible surge and high voltage damage to the control board during spot welding!! Which is likely what happened when he blow up this pcb in his follow up video: kzread.info/dash/bejne/kZl5sdOefrWyoqg.html

The product that represented the two identical pieces in the beginning of the video in your right hand

I think it's for a foot peddal

At least take a look at the circuit, the second welder is a nice piece of equipment.

I'm not sure how this affects things, but your strip is not nickel, it is nickel plated steel. I saw your magnet attract it which pure nickel would not do. have you tried pure nickel?

@stevenc22

3 жыл бұрын

Pure Nickle is magnetic. The element Nickel (Ni) is one of the few ferromagnetic metals. Ferromagnetic means they are attracted to magnets and can be magnetized themselves. Most metals aren't magnetic with the exception of iron, nickel, cobalt, gadolinium, neodymium and samarium.

@sNEAKYnIGHTmUPPET

3 жыл бұрын

@@stevenc22 well shit, ain't i got a mouth full of foot now. copied from the first google result no less. lol ty

@stevenc22

3 жыл бұрын

@@sNEAKYnIGHTmUPPET lol don't stress. 👍

@sNEAKYnIGHTmUPPET

3 жыл бұрын

@@stevenc22 no stress here. I just got annoyed with the mass of bad info on KZread.

Probably should have tested on some strips first

@stevenc22

3 жыл бұрын

Yup learned my lesson

Pistola, dove ai messo LÀ batteria, E l'uscita dei puntali!! Mi chiedo come fanno a farvi fare certi VIDEO!! Stendiamo un velo peloso!! Saluti e basta.

😂the last one device is useless, i rather use battery directly to the cooper needle than use that device