Insert wire under the pins. Solder the edge under the pin next to the power jack.

While testing a new circuit on a breadboard, my good old Arduino Uno suddenly released its “magic smoke” with a loud pop and stopped working. On a closer inspection, I saw that a small crater had appeared on the 5 …

Replacing a damaged Arduino Uno voltage regulator Read more »

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Daisy is an old “Discovery Kids” projection alarm clock turned into an autonomous obstacle avoiding bot. The brain is an Arduino Mini. Two small servos, modified for continuous rotation, are used for a differential drive and a combination of 3 …

Daisy – an Arduino autonomous obstacle avoidance robot Read more »

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In a previous post I shared my notes on  how to connect an Arduino to an Android phone using the the popular and cheap HC-06 Bluetooth module. In that example I used the Bluetooth module with its default settings. That works fine, but …

HC-06 Bluetooth module datasheet and configuration with Arduino Read more »

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