foone Profile picture
3 May, 11 tweets, 3 min read
if I'm to have a symbol, it shall be one I respect.
So the way this works is it pairs up with this, which is the backside of a rotary knob:
and the idea is that every position of the knob activates a unique set of these pads, allowing the device to know what position the knob is in.
Here's a wider few of that front PCB.
There's an LCD that goes on the left, and 4 buttons in the middle.
The odd cylinders at the right are connectors for probes.
the LCD is in this little plastic holder that keeps it in place. it talks to the display using that elastomeric (aka ZEBRA) connector
most of the parts are on the back of the PCB.
A blobbed over IC with a 4mhz crystal, speaker, and another chip.
that other chip is a quad op-amp.
But yeah, those are the internals of my go-to multimeter. It's an Extech Instruments Autoranging Mini Multimeter, MN16A
It's a good multimeter that's not too expensive. My only real complaint with it is the LCD which has crappy viewing angles.
it's interesting that FLIR owns Extech. My phone has a FLIR module, and has an add-on for an endoscope.
I think it would have been more useful to me if instead of an endoscope, it had a multimeter-probes add-on.
SOME DAY I WILL OWN ONLY ONE WORKING ELECTRONIC DEVICE AND I WILL USE IT TO FIX ALL THE OTHER ELECTRONIC DEVICES

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More from @Foone

4 May
look I'm not saying it's Bad Ideas O'Clock but hey you know that period when Intel was making Pentium II/III CPUs that fit into slots? and how there were adapters to let you fit socket 370 chips into them instead?

Sure is a lot of space on that board. Image
what if you didn't put a socket 370 chip on there? you have plenty of room for other chips and any interfacing circuitry you need
I wonder how well you could build a "Slotket adapter" that didn't adapt from a socket 370 pentium to a slot 1 pentium, but instead just had a modern ARM chip or two?
Read 59 tweets
4 May
papers please apparently renders out documents to static images at creation time, which means that no matter how much you hack the text ram, it'll never change.
I got the top citation and then hack the ram to say "Biolated", but only the second citation (gotten later) changed.
it doesn't do that for the Official Bulletin, possibly because it has multiple pages, but unfortunately it turns out it uses a DIFFERENT FONT
Read 5 tweets
3 May
I think this pentium II really wants to be a mac
I have no idea what's going on with the 3.5" floppy drive there. it's like, they had a place for one, but put it in a 3.5"-to-5.25" adapter instead?
the back. It's ATX, and oh god it's one of those bastards that can slide out the motherboard.
Read 7 tweets
3 May
I'm personally offended at d*gec*in going up in price from nothing to barely anything.
And you know why?
Because back in like 2014, someone sent me a pile of them because these silly things were being talked about a bunch and then I didn't care about them at all
and every time someone goes d*gec*in is now at 0.25$ I get closer to having to care AND I DON'T WANT TO
especially because I haven't touched them in literally 7 years.
they're in some backup of a backup of a backup on a hard drive in a box hidden in a storage unit behind a sign labeled "beware of tiger"
Read 9 tweets
3 May
Someone should make an annotated version of Star Wars, where every onscreen character has their name overlaid, and it's clickable so you can go look up their story.
Like, Tenn Graneet is the master chief gunnery officer who was responsible for firing the main laser on the first death star. Image
He had served in the clone wars, and was injured in his right arm, receiving prosthetic implants that made his arm much stronger.
He had fired the death star laser four times before Alderann, first on a rebel Starship and then three more times on the planet Despayre.
Read 19 tweets
3 May
John Romero... Oh no, what happened? Image
JOHN ROMERO'S ABOUT TO GET ARRESTED BY THE OAKLAND POLICE
JOHN ROMERO'S ABOUT TO MAKE YOU HIS ONE PHONE CALL. I HOPE YOU HAVE BAIL MONEY FOR HIM
Read 8 tweets

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