my recent reads..

LEAP#254 AVR Hardware PWM

Arduino provides great out-of-the-box PWM capability, but not a simple way to modify the PWM frequency. To do that you need to work directly with the processor registers. This is my summary of hardware PWM control with a range of examples of controlling duty cycle and frequency with the Arduino UNO/ATmega328. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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LEAP#253 ATtiny Programming Shield

I covered programming an ATtiny with the Arduino ISP in the ATtinyWithArduinoISP project. Since I’ve been programming a few more ATtiny processors, and simplify the processing of programming an ATtiny with ArduinoISP, I wired up a strip of protoboard to serve as a custom programming shield. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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LEAP#252 Message Waiting

This is a variation of a bi-polar LED flasher circuit that uses two single LEDs. Since that’s not very interesting, I free-wired it with surface mount components to make a little “message waiting!” indicator. Putting a card in the slot turns on the LED flasher. As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub

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LEAP#251 The Lady

A fine specimen of Coccinellidae Boldportus, a new type of ladybird discovered in Bermondsey, London. “The Lady” is Project #4 from The Boldport Club. It is a really simple circuit, and functionally nothing ground-breaking .. but that really isn’t the point. It is just a stunning bit of PCB design. Yes, this is more art than electronics! As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub hero_image


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