Patrick Casey

@peculiargames

Robots, Tesla coils, apps/games. AndModPlug, RGBbot, Voyage to Farland (Mystery Dungeon style roguelike), & Microchip Monsters dev.

peculiar-games.com
Joined April 2010
1,407 Photos and videos Photos and videos

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  1. Pinned Tweet
    2 Feb 2016

    Voyage to Farland, my Mystery Dungeon style roguelike game on Steam.

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  2. 16 hours ago

    Tesla coil master, Gianni, with a cool "plasma in vacuum jar" demonstration.

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  3. Jan 22

    Latest shortwave radio. Picked up the Canadian timecode broadcast (CHU callsign) out of Ottawa at 3.33 MHz tonight! Trying out copper foil tape ground plane with copper-clad board "islands" and the new high frequency transistors.

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  4. Jan 19

    Got some high frequency transistors and love how different they look compared to the regular medium frequency kind (at right).

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  5. Jan 1

    Still on a quest for the perfect minimalist Polyakov shortwave radio circuit. Part of it is messing with small spider web coil/magnetic loop antenna designs.

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  6. 21 Dec 2020

    My entry for the December 2020 Ugliest Homebrew Radio contest.

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  7. 18 Dec 2020

    Maybe something to do with the joule thief's output transistor feeding directly into the coils, through the RF transistor and into the following audio amp?? A fat capacitor and/or choke may fix it, but I like PNPs and keeping the part count down, so will stick with that.

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  8. 18 Dec 2020

    About yesterday's Joule Thief for the micropower Polyakov shortwave receivers -- has the potential (hehe) to cause noisy oscillations for the NPN variant. In cartoon form...

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  9. 17 Dec 2020

    Threw together another funky "Joule Thief" to bump a dying AAA battery up to 3V for powering all the little shortwave radios I've been making.

    1 reply 1 like
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  10. 9 Dec 2020

    Now I'm building radios on soup can bottoms... That's epoxy gluing it on a piece of paper board BTW, not cream of mushroom. ;)

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  11. 3 Dec 2020

    It's essentially this circuit, with a little single transistor audio amp on the output and a piezo "buzzer" as an earpiece.

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  12. 3 Dec 2020

    Messing with another Polyakov shortwave receiver. This one is a "super regenerative" version and was actually able to receive the WWV time signal broadcast at 5MHz from out west in Colorado. :)

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  13. 11 Nov 2020

    I love the simplicity. Very clever transistor configuration. The following page in the book dresses it out with an audio frequency amplifier, which is what I built.

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  14. 11 Nov 2020

    It's from a fascinating book by V. T. Polyakov. It's in Russian but Google helpfully offers to translate!

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  15. 11 Nov 2020

    Soldered up another shortwave radio receiver Manhattan style. This is a "Polyakov autodyne" circuit I've been obsessed with lately and this particular set is designed to tune in to WWV at 5MHz out of Colorado -- the time & frequency standard broadcast station.

    1 reply 1 like
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  16. 31 Oct 2020

    Wiring up the shortwave radio and it's getting crowded!

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  17. 30 Oct 2020

    Sexy air variable capacitor for a homebrew shortwave radio.

    1 like
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  18. 24 Oct 2020
    Replying to

    Should have added this tweet into the thread.

    0:49
    Another video clip of the Turing Robot crawling around in weak light. Or maybe it's throwing a robot tantrum, flailing its arms??
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  19. 15 Oct 2020

    Also note the lovely vintage woven cloth covered wire at bottom left & right.

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  20. 15 Oct 2020

    Reading about UHF tuners in old TVs on . Here's one from a B/W TV, featuring cavity resonators and air variable capacitors (the disk sections that slide between each other at the top)

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  21. 5 Oct 2020

    Waiting on a couple of potentiometers to arrive, but mostly finished this... sculptural (?) shortwave radio circuit.

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