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SainsmartSensorsPIR Motion Sensor  http://www.sainsmart.com/pyroelectric-infrared-pir-motion-sensor-detector-module-for-arduino.html/ To read via your Arduino, you can read this as you would any other analog sensor. It connects to 5v and GND on the Arduino, and then also to one of your analog pins. Use the analogRead command and print it out using Serial.println. Ping Sensor  http://www.sainsmart.com/ultrasonic-ranging-detector-mod-hc-sr04-distance-sensor.html/ To get the code part to work, I downloaded the New Ping library and installed it. I used the NewPingEventTimer example. The "NewPingExample" didn't seem to work. Here's a link to the library: http://playground.arduino.cc/Code/NewPing Installing libraries means that you download the .zip folder, unzip it, and then place it in the "libraries" folder in your Arduino folder. Your Arduino folder is likely in the "Documents" folder under your user name if you are on a Mac. If there is no folder in there called libraries, you should create one. Its where Arduino defaults to saving your sketches. Accelerometer  http://www.sainsmart.com/sainsmart-mma7455-accelerometer-sensor-module-avr-arm-mcu.html/ Code from here does a lot of work and prints out xy and z values. http://playground.arduino.cc/Main/MMA7455 |