Hi, i need help finding a good distance sensor, right now im using a cheaper model http://dx.com/p/ultrasonic-sensor-distance-measuring-module-138563 but it’s not as accurate/powerful as I need.
Now when my construction comes to an end i also found that the idea of implementing the sensor might not work . If one looks at the image (no 1) the sensor is attached to the frame, i want to measure the distance between people in the room and the sensor. But with the angle of the sensor it will only catch people who’s within that angle (no1 in image 1), id like to cover bigger parts of the room see no2 in image 1. Would a separate sensor which communicates (ir, wireless?) with the arduino be the best solution? See image 2.
are there sensors with a wide spread?
Are there better sensors than the distance sensor?