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tskinner

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5CommentsNSW Australia
I tinker with a number of fields. I recently got an Arduino Uno kit so I've been looking for projects that can come in handy. One project I'd like to try is an Arduino lightning sensing camera trigger, another is a star tracker mount for Milky way photos.
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  • Make a Plasma Globe Out of a Light Bulb!

    Yes, I de-soldered the components to test them and the traces started lifting off, so I had to repair them. The main transistor could be on the way out. It didn't show as a direct short between the pins, but replacing would probably help. I may have some suitable parts in my salvage from PC power supplies etc. Would it be worth putting a capacitor or something between the transistor and the flyback to help buffer the feedback spikes? I've seen other circuits do that.Thanks heaps for the quick reply.

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  • Make a Plasma Globe Out of a Light Bulb!

    Thanks for the cool instructible. I have a plasma ball that I bought which has stopped working. The IC on the board is HEF4069UBP and the mosfet has the code TIP122. The transistor is SS9014. I've done a lot of testing of components, but I can't seem to narrow down the faulty component. It has a 12v 1a old style (heavy) power brick but I would have expected a higher amp rating. I know the transformer puts out a high voltage when driven properly, so it should be fine.If I can't get the original circuit to work I might try making your circuit with the TL494 since I have a few of them from power supplies.Have you got any ideas or suggestions on how to fix the current circuit? Maybe what could typically burn out or go wrong without showing signs of trouble? Perhaps I can test parts salvaged f…

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    Thanks for the cool instructible. I have a plasma ball that I bought which has stopped working. The IC on the board is HEF4069UBP and the mosfet has the code TIP122. The transistor is SS9014. I've done a lot of testing of components, but I can't seem to narrow down the faulty component. It has a 12v 1a old style (heavy) power brick but I would have expected a higher amp rating. I know the transformer puts out a high voltage when driven properly, so it should be fine.If I can't get the original circuit to work I might try making your circuit with the TL494 since I have a few of them from power supplies.Have you got any ideas or suggestions on how to fix the current circuit? Maybe what could typically burn out or go wrong without showing signs of trouble? Perhaps I can test parts salvaged from my collection. There may be suitable mosfets in power supplies etc.Thanks heaps for any assistance you can give. :-D

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  • tskinner commented on julianastam's instructable Dutch Stroopwafels
    Dutch Stroopwafels

    Only problem is finding the waffle iron... :-D I have a book from the Stroopwafelbakkerij in Gouda with lots of recipes but I can't get a waffle iron other than Belgian style. :-( I have made the cookies though. ;-)

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  • If you already have the USB micro plug on your inductive charging circuit then you have all you need. Just plug it into the USB micro port on the charging board, no need to play with wires then. I'm looking at a similar idea cos this type of charging module is much cheaper than the set here. :-)

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