Alan's Geeky Musings
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Advent Calendar of Circuits 2011: Day 24: Series Circuit Trick
vk2zay
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Day 24: Series Circuit Trick.
*spoiler alert*
My implementation of Fredzislaw100's "Series circuit - 3 LEDs" trick circuit: http://www.youtube.com/watch?v=RkTvDjhImwo
Th...
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Building Bottle Rockets for NYE
vk2zay
998 views
Building bottle rockets for NYE.
3 Stars was actually a bit conservative, they went very, very high. Too high for such a weak break of small stars really, 4-5 and a bit...
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Day 23 Extra: Integrating With Other Circuits
vk2zay
831 views
More stuff I forgot to talk about and extra ideas for other projects. The output of this circuit is glitchy, so integrating it with other circuits is a bit tricky, but pos...
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Day 23 Extra: Star Circuit Values and Integration with Tree
vk2zay
542 views
A little bit more on the star circuit and how it is integrated with the tree electronics.
Errata: I obviously mean day 17, not 19! :)
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Advent Calendar of Circuits 2011: Day 23: Ring Counters and Step Sequencers
vk2zay
849 views
Day 23: Discrete Sequential Logic with SCS-like Cells.
Obviously this kind of circuit need not blink LEDs (although a diode is needed in the PNP's emitter circuit to make ...
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Advent Calendar of Circuits 2011: Day 22: Tone Beeper for the Logic Probe
vk2zay
848 views
Day 22: Tone Beeper for the Day 19 Logic Probe circuit.
Simple add-on 3-transistor circuit which adds the promised sound-generating capability for easy eyes-up use. Doesn...
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Advent Calendar of Circuits 2011: Day 21: Forever Flasher
vk2zay
985 views
Day 21: Forever Flasher
An ultra-low current 1.5 volt LED flasher circuit. OK, maybe not "forever", but it should blink for a very long time. Burkhard Kainka helped po...
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Advent Calendar of Circuits 2011: Day 20: Adjustable Current Sink (PSU Dummy Load)
vk2zay
759 views
Day 20: Adjustable Current Sink (PSU Dummy Load)
Please excuse my errors in naming things in this video - I was *very* tired. Should have also talked more about MOSFET ...
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Advent Calendar of Circuits 2011: Day 19: Window Comparator Logic Probe
vk2zay
755 views
Day 19: Logic Probe
BJT-based, high-Z logic probe with floating indication. Check out day 22 for a matching tone generator add-on so you can use it eyes-up.
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Advent Calendar of Circuits 2011: Day 18: Simple VHF Receiver
vk2zay
1,093 views
Day 18: Simple VHF Receiver
Super-regenerative VHF AM/WBFM receiver tuning about 76-160 MHz.
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