Advanced Ultrasonic Distance Rangefinder Sensor by Virtuabotix Review

I have bought some ultrasonic parallax sensors that only have three pins. But they have four, one pin for the trigger and the other for the echo. My Arduino sketches were based on parallax sensors and I had to modify them to make Trig and Echo use an extra pin. At first my program didn't work, but then I realized that at least one of the pins must be on the PWM port. I believe this is an echo pin but I haven't tested it yet. Because currently I am using two pins on the ADK Mega board and two…

I'm new to Arduino so it took me a while to get this working. I am using a Mac with OS X 10.6.8. The first problem was that this sensor has 4 pins instead of the usual 3. For 3-pin models, the input and output use the same pin. Luckily the contacts are labeled so it was easy to figure out. Connect GND to ground and Vcc to the Arduino's 5V supply. Trg must be a digital output. I used pin 11. The echo should be an analog input. I used A0. The hardest part was figuring out where to put the library

I only have this sensor for crafting and playing with the Arduino. The sound is audible, but not bad. It's just a quick click. It probably would have gone unnoticed with any background noise, but I paid attention on purpose. I've given it a 5 star rating for now, but will update if I feel like it's not a full 5 once I've actually tested it. It has worked well so far, was packaged securely and had excellent documentation. I recommend it. ***Original problem*** Initially I had problems with setup