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A Knox College student disassembles old electronic devices in a physics department lab, prior to recycling.
TN9 Systen
electronics
Inclined uprights and full Height bay dividers to create sectors.
La struttura TN9 consente l'installazione di montanti inclinati e divisori a tutta ltezza per separare vari settori merceologici
Photos from an article about some different identifying marks on chips. You can read that article here.
The PCBs for my nixie tube clock arrived, and I even got twice as many as I ordered! Hurrah for Gold Phoenix.
At any rate after a marathon soldering session they are finally assembled and awaiting testing and programming and all that. The power supply works, and the AVR was programmable, so that's a good sign!
DIE COMPUTER (James Connolly & Eric Pellegrino) on a Southbridge Slow Electronics show via glitch.fm
DIE COMPUTER (James Connolly & Eric Pellegrino) are Chicago-based CRT Hackers + Noise/Glitch Artists/Musicians: diecomputer.org/
Same charger as seen on the latest EEVblog video #284.
Looking at the waveform you can see that I put my "pickup coil" on the charger the other way around.
Promised delivery in one to two weeks, in mailbox 2nd day after ordering.
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Will buy from them again!
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IMG_3062
it seems that the silkscreen is rotated or skewed, as you can see the edges of IC3 rectangle are not straight
the fab house will add their own ID on the board - this usually depends on your design. in this case, it's at the bottom right
One of our electronics work benches. Oscilloscopes, waveform generator, bench power supplies, spectrum analyser, multimeter and a fluke frequency analyser. Down under the shelves soldering irons and assorted small tools. The lights are a Mario custom design and change height! So nice!
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A little programmer carriage for an 8-pin ATTiny chip. It's basically just an ISP header and a DIP socket.
They arrived today from Russia!
All twelve are in great condition considering that they were made in mid 1980 - they were packaged very well, foam covering some kind of milk-thing-box from Russia which contained more foam wrapping the actual tubes. The tubes are 2 inches high from bottom of the glass to the top, and the characters are 2cm high. Tubes from tubes-store.com/ who still have loads of this type (IN-14) left.
Once I've got some free time I'll turn these into a clock, but first I have to figure out how to generate 170V DC...
This is what my first generation of irrigation electronics looks
like. I am using a plastic container with clamp on lid to hold the
circuit board and transformer. The small mint tin has a slice in it
so the LEDs can easily be viewed to see just how dry the soil is.
There are four sets of wires running out of the box to the solenoid,
moisture probes, circuit power and transformer power.
Design and build an odometer and speedometer for a model railroad. The distance/speed measuring instrument shall be installed in a separate model railroad car (with its own battery for a power source) and shall display the total distance the train has traveled (in scale miles) and the speed of the train (in scale miles-per-hour). The odometer shall display values from 0.0 to 9.9 scale miles and the speedometer shall display 00 to 99 scale miles-per-hour. The speed display shall be updated about once a second. The measurement shall be accurate to ±1%.
The wheel on the railroad car has a diameter of 33.6 scale inches. A transducer is mounted on the axle that produces four “square” pulses per revolution of the wheel.
We came across an interesting oddity from the realm of consumer electronics: a fake seven-segment LED display. Just for fun, we made our own version too.
Read more about this project here.