mystery meridian box. I've always hated 5-pin DIN being used for power. it's an accident waiting to happen
60 pin D-sub
wow tester?
hmmm these look familiar
not what I expected to find
looks like a cellphone base station
can't find any info on the interwebs
that's a big wire stripper
a cape for Arduino??? c'mon, capes are a BeagleBone thing. Arduinos use shields.
just plug this into your PC power supply
a lot of people want to know what store this is. excesssolutions.com
they're located in San Jose, and they're basically the last surplus store left in Silicon Valley.
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let's try and get this paper tape reader working. I have no control board for it so this is going to be interesting
here's a 4-phase stepper motor driver from another project. I actually got this working a while back, so I can move the tape precisely in either direction.
this is the illuminator. it shines light through the holes in the paper tape up into phototransistors
this is a picture of the worst day of a professional engineer's life. 🧵
yes, it's the Florida International University pedestrian bridge collapse. it came down during construction due to critical design flaws. unfortunately several folks lost their lives.
there is a very good illustrated digest that the NTSB created about their investigation of the collapse. ntsb.gov/investigations…