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 »
I am working on circuit that will allow me to program my Arduino boards (I have an Arduino Uno and a couple of Arduino Pro Minis) over a wireless Bluetooth connection. I am planning to use my cheap and easy to find …
Erik Verberne teaches Information and Communication Technology (ICT) in Netherlands and looked into the Arduino platform in an attempt to enhance his department’s curriculum. He diligently documented his research and is now sharing it with the community. The result is …
Piezo buzzer background Piezo buzzers are simple devices that are commonly used to produce beeps and sounds in many electronic gadgets, like alarm clocks, toys, pc boards, etc. They consume very little current and have high impedance, which means that …
Play simple melodies with an Arduino and a piezo buzzer Read more »
Shift registers are useful chips that can add more outputs or inputs to your micro-controller. The 74HC595, for example, provides 8 additional digital outputs that can be controlled with only 3 Arduino pins. Additionally, you can “daisy-chain” multiple shift registers to …
Shift registers: add more digital I/O to your Arduino Read more »
I spent some time reading on accelerometers, gyros, sensor fusion, PID, optimized PWM motor control. I tinkered with the components I have for a while and then procrastinated for even longer. Finally, I can say that I have a prototype …
An Arduino self-balancing robot: working prototype Read more »
A while back I bought the InvenSense MPU-6050 sensor in a “GY-521” breakout board from eBay. For a long time it sat quietly in my box of “possibly cool things to check in the future”. Recently, I decided to finally …
First, lets see the little steppers in action! Our main character, StepperBot, is “instructed” to move in a square path on my coffee table, making 90 degree turns at the corners. Turning exactly at the right time and by the …
28BYJ-48 Stepper Motor with ULN2003 driver and Arduino Uno Read more »