LEAP#273 Voltage Controlled Oscillator
Based on yet another great video tutorial from w2aew,
this was a successful demonstration of how varicap diodes can be used to create a voltage-controlled oscillator
running in the 14MHz range.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#272 Saike 909D
I finally have hot-air, and I soon realised I shouldn’t have put it off so long!
The Saike 909D is a very economical unit, and also includes a bench power supply and solder station.
It is not perfect, but I’m nevertheless very happy with the unit and it does a great job at hot-air reflow.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#271 Cordwood Guitar Tuner
The Cordwood has six LEDs. Six is one of my favourite numbers .. like the number of strings on a standard guitar. Here’s a quick build that uses an electret pre-amp and a simple Arduino script to provide a pretty stable and accurate indication of which root note is playing. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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LEAP#270 Cordwood Aanimations
The Boldport Cordwood proved to be an instant classic. A few LED animations using the Cordword library written by aaronjasso is a good way to show it off. Little did I know that months later, the demo would show up in a hackaday article! As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
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