I2C Scanner

The fast and easy way to find out the i2c devices connected to arduino. It also helps to find out whether the wiring is correct or not, usually people tend to interchange the SCL and SDA wire and waste a lot of time.

Interfacing the 10 DOF IMU with Arduino and Atmega

Starting to work on the 10 DOF Inertial measurement unit. Will be posting the updates regularly here.

Board Specifications:

Interfacing HC-SR04 Ultrasonic Module with Arduino Pro Mini

SR04 is a module that can detect distance between 2cm to 400cm by sending out ultrasonic waves and calculating the time between the sent signal and echo received.

Steps:

1. Send the trigger signal - a TTL 10us signal
2. Wait for the echo pin to get high.
3. Calculate the time for which the echo pin is high using a timer.
4. Calculate the distance using 

Distance = high level time * velocity (340M/S) / 2