Excess Solutions surplus thread! Image
ooh, an Opticon infrared receiver. these are installed at traffic lights. emergency vehicles have a special transmitter that causes the light to change, giving them priority. ImageImage
extremely short USB cable on this keyboard Image
just set it on fire and go home Image
😬 Image
it's a reel of tiny solder squares Image
they've begun moving the back part of the store. it's looking pretty empty Image

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More from @TubeTimeUS

10 Jul
just thinking about these DIP-8 packages that have been converted to surface mount by trimming the leads short and bending them outwards. this is an official IC package! it's called DIP-8 gull wing. Image
the example in the photo is this optocoupler.
broadcom.com/products/optoc…
but why not just make them in a standard SOIC package? turns out there's a very good reason.
Read 7 tweets
7 Jul
oh look it's a working IBM 5154 enhanced color display, and it's on the auction site. Image
these monitors can handle 15.7KHz for the 200 line modes as well as 21.8KHz for 350 line modes. the polarity of the vertical sync signal tells the monitor which of the two modes to be in. that's about it.
there are better monitors out there, for sure. i like the original NEC Multisync because it can handle lots of different frequencies and standards, analog and digital.
Read 8 tweets
6 Jul
today on The Bench of Healing™ -- an original IBM 360K 5.25" drive.
it's very dusty
ooh there's a floppy disk still inside! it's also very dusty
Read 21 tweets
6 Jul
I always wondered what was inside these neat 1980s radios. time to take one apart! 🧵
batteries go in here. looks like remnants of corrosion, hope it's not too damaged.
on the back there's a switch to select between local and distant (DX) stations. also a few screws.
Read 10 tweets
5 Jul
here's a very special microcassette recorder. 🧵
in case you haven't seen these before, the cassettes are a lot smaller than a standard audio cassette.
let's have a look inside.
Read 22 tweets
28 Jun
i've been thinking about the Surfside condo collapse. 🧵
i'm a bit hesitant to write about it, mostly because i keep thinking about the folks trapped in the rubble. it makes an engineering discussion seem a bit cold-hearted.
but engineering affects all of our lives -- which, on a daily basis, literally depend on engineers doing a good job. most people take this for granted. it's probably why a catastrophic failure like this can affect us so deeply.
Read 16 tweets

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