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Category Archives: Electronics
Supercharged pedicure
Luckily, these guys run on DC power! With a little fancy contact rigging and a DC power supply, I’ve got a custom tools with stable, configurable power. Thanks, Electronics!
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Abella, enclosed
Although Abella used to live in a shoebox, now the electronic musical instrument has been fully soldered and packaged in a project box. The prototype is complete!
Posted in Electronics, Music, Software
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Household thermal imaging
I am now the proud owner of a Seek Thermal infrared camera! Let’s play a game: it’s called “guess the subject of this photo”!
Computer upgrade
Merry Christmas to me! It’s time for a motherboard upgrade. Here are the components I selected:
Posted in Electronics
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USB toggle switch extension
Last week I found myself in need of a USB toggle switch. Such a device would allow me to toggle the power on a USB device without having to unplug it. It is true – I suffer from a disorder that requires me to construct a USB switch rather than simply unplug my devices.
This simple device uses a USB extension cord and a slide switch connected to the +5V power line (the red wire). If you happen to have a device [such as an external video card] that requires to be reset every few days, simply toggle the switch when a reset is needed.
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Upgrade halogen->LED
We have two 300W halogen flood lamps in the house, but I decided it was time for an LED upgrade. I selected the Cree 18W (90W equivalent) flood lamp as the replacement. I wanted to keep the 6ft tall lamp stand and dimmer, but remove the halogen housing, thermal runaway circuit and reflectors.
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$50 electronics test bench
I’ve been having a hard time finding oscilloscopes and adjustable power supplies in the “hobbyist” price range, but I think I have cobbled together a solution.
A few key components:
- Power supply from old PC
- Make sure to short the correct pins to trick the power supply into turning on. This is usually green to black.
- yellow-black is 12 V
- red-black is 5 V
- orange-black is 3.3 V
- If you want other voltages, well.. time to built a buck-boost circuit!
- Gabotronics Xprotolab mini oscilloscope
- 2MHz sampling
- 8 bits resolution
- $50 (the best part)
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