Home built versatile servo tester

Servo motors can be used in many areas like RC modeling, robotics and control devices. They operate by applying PWM signal. By varying duty cycle we can change its rotating shaft angle. If deal with servo motors a lot you probably know that like any other device may be faulty or have flaws. So it is best to check them before installing. You can buy many types of servo testers for cheap, but Jan_Henrik decided to build one. His intent was to make it versatile. Servo tester is built around Attiny45 microcontroller which is programmed in Arduino language. Servos may come with different signal wiring, so he added three jumpers to select proper connector layout. PWM duty cycle is controlled with potentiometer. If you place any other resistive device like LDR, or thermistor instead of potentiometer you can use it for controlling fan speed or open/close vent hole. So this is great device that can be put in an hour. Continue reading

Smart Visualizing Sensor Data with Arduino and Processing

Do you have passion on the robot development field? If you did, then this visualizing sensor data with Arduino and processing robot is going to bring you endless fun… In this project, you’ll know and understand the exactly way to combine the Arduino, sensors and the Processing environment to visualize real world sensor measurements. There are three main components that needed to be used for this project: an Arduino Diecimila, a standard hobby servo and a Sharp IR sensor. You can use the Version 0013 for the Arduino IDE and version 1.0.0 for the Processing IDE. As you can see through the above picture, an IR sensor has been mounted to a servo on the small yet cute robot. Several Sharp GP2Y0A21YK0F IR distance sensors need to be used, due to its inexpensive proximity sensor and the ability to sense objects from 10-80cm. The disadvantage of this sensor is it can only detect objects within a narrow beam. In order to overcome the downfall you can mount the sensors on the servo, so that you could pan the sensor approximately… Continue reading

Interactive DIY Infrared and Ultrasonic Scanner

You always dreaming of own a scanner that can scan with infrared and ultrasonic, like those you’re normally watching in the movies? Kill the daydreaming and start to make yourself an interactive infrared and ultrasonic scanner. Here is a scanner that can scan a 180 degree area from 5 to 21 inches away, and will display the information on a color LCD. Continue reading