Reddit reviews MG Chemicals 8331 Two-Part Silver Conductive Epoxy Adhesive
We found 5 Reddit comments about MG Chemicals 8331 Two-Part Silver Conductive Epoxy Adhesive. Here are the top ones, ranked by their Reddit score.
Two-part silver-filled epoxy adhesive with good conductivity and faster working time than MG Chemicals 8331S adhesive to bond electronic devices, form conductivity seals, and cold solder heat-sensitive materialsProvides EMI/RFI shieldingContinuous service temperature range from -67 to +302 degrees FProvides work time of 10 minutes and has full cure time of 5 hours (at 77 degrees F)RoHS and REACH compliant
Looks like the solder pads ripped off the PCB. You can attempt to scrape away the green mask and solder a new jack there, but its pretty difficult and you need to be good with a soldering iron.
Do you have any soldering equipment?
There are also conductive epoxies avaliable which you can use to glue the connector to what's left of the trace, but they are expensive and you haveto be careful to no short anything out: https://www.amazon.com/MG-Chemicals-Two-Part-Conductive-Adhesive/dp/B008UH4DB2
Me too; googled it and it's not. This is though
Though this is marketed as conductive, without testing others you don't know that they're not conductive.
I wouldn't recommend using that particular adhesive, for decent conduction you'll want an epoxy-style adhesive I've found.
That stuff is even more expensive. http://www.amazon.com/MG-Chemicals-Two-Part-Conductive-Adhesive/dp/B008UH4DB2
Some of the drugs I'm on cause pretty severe hand tremors and I'm still able to solder pretty easily. I think you'll live. Soldering burns hurt like a motherfucker, but they don't hurt very long.
> Hey guys, I'm a self-educating DIY electronics fan (not yet too experienced) and I am going to be a volunteer on a makers fair with a goal to lead a workshop for about 40 kids.
> Time: 60 minutes, Budget: about $4, Difficulty: complete beginners, Age: 11+
Fuck, dude. 40 kids, on a $160 budget, all at once... that's a tough ask and it's gonna suck. That's a ton of kids.
I TA'd college sophomores for E&M lab- around 40 kids, 3 hours. You'd be amazed how little progress people make if they're just a little too confused. Even with parents there it's gonna be very hard to get everyone the help they need in one hour, and I'm gonna assume you don't have 40 soldering irons (or even 10-20). If 5 parents have never heard of a soldering iron, 5 more won't pay attention, and 5 will somehow end up grabbing it by the hot end. Anyway, you'll probably want to buy a bunch of mini breadboards. They can also reuse it for other things. Remaining budget: $3.16.
Speaking of reusability- given passives are so cheap, I'd buy plenty extra and give them a goodie bag with a resistor chart and maybe even some basic formulas and diagrams. That way they can keep experimenting at least a little. Generally, I think kids should be using passives and maybe op amps. BJTs are just too hard to use without math, and even 555s are pretty complicated for an 11YO. NAND gates are simple conceptually, but even a large percentage of grown-ass adults in a workshop are gonna lack the focus to figure out which of the 8 indistinguishable pins is the right one to wire up to the other indistinguishable pins. So I'd avoid adders as well, unless they're pre-wired.
Passives at DC are boring. Sorting resistor values is boring. You've gotta try pretty hard to overcome the first and minimize the second. I'm not sure how nerdy and boring this is, but I think one neat idea would be to make an LED controlled by a resistor ladder ADC. It'll require some pretty talented explanation, but if you can successfully do that and build the steps to make it obvious the voltage is halved each time, you're literally showing them how binary works. They can see that and know how a computer translates a binary number into an actual value. You'll have to actually test resistor values to see what visibly changes the LEDs resistance, and it might be better to label the different ladder points by 10s instead of 2s (ie 1 + 10 + 100 + 1000).
I don't think you have enough time and even if you open by stressing that wall voltage will kill you parents may not be a fan of high voltage, but one more complex but way more stunning example would be a Cockroft Walton multiplier. For $2.50 per kid you can get an 18 V supply, which you can turn into AC with a 38 cent LM324N or similar set up as a multivibrator. The remaining 28 cent budget isn't enough to get 5 stages worth of resistors, capacitors and diodes, but if you can swing that then that's ~140 V at the output, and I think it should be able to produce a visible but basically safe arc. It will destroy pretty much any electronics it gets near though. Also if you really tried to get them to understand how it all worked, a multivibrator is like an hour on its own and a doubler cascade is probably another 90 minutes.
Aside from those two I'd try to go for lights (sound would just be cruel to parents) and interactivity. Also, it's too expensive and too slow for this, but NB that conductive epoxy exists- it's actually low enough resistance that you can use it to pass small amounts of current through glued joints.