Arduino Joystick Module Example

In one of my rather frequent eBay visits, I came across a nifty little joystick module, much similar to the analog thumb-stick on the PlayStation 2 controllers. The module is very easy to use with an Arduino uno and only costs a few dollars. Several different versions are available from eBay, Adafruit, Sparkfun and other… Read More »

Daisy – an Arduino autonomous obstacle avoidance robot

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 infrared sensors (under the “skirt”) and 1 HC-SR04 ultrasonic sensor (the “eyes”) detect obstacles. I… Read More »

Soldering tutorials, tips and tricks

Breadboards and hook-up wires are great for prototyping and testing out basic circuits. At some point though, you will want to create something more permanent and robust. Robots move around, bump into things, shake and vibrate and wires tend to disconnect way to easy. Soldering will help fix that! The best part is that even… Read More »

HC-06 Bluetooth module datasheet and configuration with Arduino

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 some applications may require changing the communication speed (Baud rate), the pairing code, the module… Read More »