my recent reads..

LEAP#295 Frequency Counter Kit

Not that I really need another frequency counter, but it is interesting to see how this one is constructed. Julian Ilett has a video on a similar kit and his investigation of the circuit was thorough, including the discovery that the kits available are deritative from original work by Wolfgang “Wolf” Büscher, DL4YHF (see Frequency counter with a PIC and minimum hardware). As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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LEAP#294 CD4060 Crystal Oscillator

The CD4060 datasheet describes a crystal oscillator configuration for self-driving the ripple counter. Using a crystal provides very precise (but fixed) frequency control. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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LEAP#293 CD4060 RC Oscillator

The CD4060 datasheet describes an RC oscillator configuration for self-driving the ripple counter with a 50% duty cycle. This is pretty handy, and is used for example in circuits that need a self-running binary counter or frequency divider. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image scope_ripple_count


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LEAP#292 H823 Audio Effects Chip

Potted music chips! Figuring them out is half the fun;-) The H823 chip arrived in kit and so far I have been unable to find a source for the music chip alone, or indeed anything approximating a datasheet. But after a bit of tinkering, I was able to get it sussed and control it in all its 1-bit glory.. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub

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