Using the Rigol 1054Z to Measure Setup Times on a 650 Processor
Measurement of tsys, trws and tads on a Rigol 1054Z. The measurements use 505 threshold, not 30% as it's easier to eyeball it. ... https://www.youtube.com/watch?v=NG7l1QItR9I
The simple coffee machine gets a pump addition, so I can make more coffee without standing over it for ten minutes.
A peristaltic pump and a variable power supply adjusted to just the right rate to not overflow the filter.
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https://www.youtube.com/watch?v=3Q8w3QBo2f4
This is a Rockwell 920/3 calculator, one of the Rockwell 900 series.
Manuals on Katie Wasserman's site:
http://www.wass.net/manuals/
I'm trying to pull all the information I have on this calculator here:
https://sites.google.com/d/1V14QzSjnWO_XDMreRE1ATJx_TDg5Z-i-/p/1Mi0Xp-P4tiJmt7-axZWRxEv-ChLhPQqZ/edit
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https://www.youtube.com/watch?v=mRxRr7Xm_wA
The PC-G850VS can program PIC microcontrollers (PIC16F84 and PIC16F84A), but you need a programmer attached to the 11 pin port.
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https://www.youtube.com/watch?v=I7VGX80kyEA
This uses a casio fx-502p and and Arduino to control the flashing of a light bulb. The light bulb is an old Belisha beacon (https://en.wikipedia.org/wiki/Belisha_beacon)
that I dug up in my garden, I've no idea how it got there. The bulb is a 60W mains filament type that is driven by a BTA204 triac which is in turn driven by a MOC3041 which is driven by a transistor attached to one of the digital outputs of an Arduino Due. The Due flashes the lamp at a particular rate, the rate being set by a Casio fx-502p. The Casio sends a data stream in Kasas City type format to an Arduino shield on the Due that turns the 1200/2400Hz signals into square waves, the Due code then decodes that into numbers. One of the numbers (the 'file number', the Casio's equivalent of a file name) is used to control the half-period of the flashing cycle The bottom two digits are used so 0 to 99 is approximately 2Hz to 0.5Hz.
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https://www.youtube.com/watch?v=dzFQdBvnSlo
This typewriter uses a mechanism similar to the old four colour plotters from the 80s and 90s that were sold for use with a lot of vintage calculators and computers.
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https://www.youtube.com/watch?v=KdLJjT8waBY
The logic from the flash datapack has been pulled out and put on a breadboard for debug.
Does it work? Well, no.
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https://www.youtube.com/watch?v=0Affvz9h7U0