rpaddock
This reminded me of a Blog entry I wrote about in 2013 on
"Massive Electro-Pyrotechnic Initiator Chip Resistor
(MEPIC)". These are 0805 chip resisters that are by design
meant to let out the Magic Smoke that runs all electronic
parts.Sadly I could not get free samples from my Vishay
Rep, that I was in good standing with. MEPIC85N8R0KTT come
in lots of 10,000 to buy.Be sure to check out the
application note "A Guide to Using EPIC / MEPIC Igniters
in Pyrotechnic
Applications".https://www.vishay.com/en/product/53058/Nati
onal Semiconductor, bought by TI, used to make a similar
part, check out the application
note:https://www.ti.com/lit/an/snoa217/snoa217.pdfThis is
what I wrote about the MEPIC parts a long time ago:"MEPIC
resistors, also known as bridge resistors, are resistive
elements that convert electrical energy into heat energy
in a precise electro-thermal profile for the purpose of
initiating a series of pyrotechnic events in a controlled
energetic reaction. [They go BOOM on command, which is
different than Rapid Spontaneous Self-Disassembly.]The new
Vishay Sfernice resistor is optimized for electronic
igniter applications in automotive safety systems for the
deployment of airbags and other safety devices; digital
blasting in mining applications; and in fireworks
applications for better synchronization of fireworks,
music, and special effects.With firing energy down to 1.5
mJ and a typical ohmic range of 2 Ohms (+/- 10 %), the
device provides designers with very predictable,
reproducible, and reliable behavior.Offered in the
standard 0805 case size for the wraparound and flip chip
versions, with other sizes available upon request, the
resistor features easy set-up of firing levels, and is
compatible with various pyrotechnic compositions.Offering
ESD withstanding to 25 kV without extra protection, the
MEPIC resistor's performance meets no fire/all fire
conditions and the requirements of USCAR, AKLV16, and
major car manufacturer standards.The device is
RoHS-compliant and conforms to Vishay "Green" standards.
[Is it not great that Fuzes are 'Green'?]"
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inigyou
Electroboom did this first, right?
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> piinbinary
The README references Electroboom's implementation
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uberex
Based. Unhinged. Don't try this at home.But it is also
art. It represents the waste in our devices that play out
over 1-4 years (or say a few weeks for a vape) but in one
night.But yeah. Don't do it. Indoors? wtf!!!!
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> nmeofthestate
Oh no. I quite liked this until you said it was art
that Represented something.
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beeforpork
That sounds completely safe and healthy! Hmmmm, I love the
smell of vaporized electrolyte, particularly when waking
up!
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> fc417fc802
I feel like a wire detonator would be safer plus the
consumables would be cheaper however even then I doubt
vaporized copper or aluminum is good for you. Honestly
just roll some firecrackers and use the ESP to light
them off.
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andai
There's a video demonstration about halfway down the
GitHubhttps://github.com/ArcaEge/capacitor-alarm-clock#Dem
o
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felooboolooomba
Sorry I'm late, the capacitor didn't blow.Did anyone else
smell capacitors when they watched the video? The brain
does funny things.
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peterabbitcook
So it's not UL listed?Do you need the 15V input to torch
the capacitors and run the relays?
Could I use a 5V USB ESP32 dev board instead, and just put
a boost circuit or MOSFET on the relay load side for the
explosion circuit when it needs to go off, or are there
other components that need the higher voltage?
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sscaryterry
Try this with a tantalum capacitor. Careful not to lose an
eye...
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> Uncle_Brumpus
Luckily our eyes tend to be closed when we're asleep.
Evolutionary safety squints.
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ahoka
Is this not technically an IED?
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> NDlurker
Doesn't look improvised to me.
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netrap
that's a bomb dude.. lmao.. don't take that anywhere!
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bilsbie
What's happening at the electron level that makes them do
this? Anyone know?
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> sdlion
If I recall correctly, electrolytic capacitors have to
get "burned in" during manufacturing to make them
work.A current is passed through the capacitor and a
thin film of oxide is built up in one of the
terminals, according to the polarity. This is why
electrolytic caps have polarity, if you use them with
their polarity inverted, you flake off that oxide
layer and thus short them out.A free running current
in that electrolyte boils it off, and you get an
exploding cap
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adnaahmed
the alarm clock for the ai age, it needs an LLM
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> KaiserPro
It is an LLMa Life limiting machine
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block_dagger
How about a flux capacitor clock?
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