Hi there,I just received two HC-SR04 modules that I have been playing around with. I have since noticed that I get a very poor max range on both of these.I have connected the sensor through a breadboard to my Arduino Nano and used the NewPingExample (from v 1.5). Even though there are no objects in front of the sensor, it shows the distance as between ~60 and ~70 cm for one module and ~55 cm for the other. I have tried another simpler library (Ultrasonic), different pins, and different positions in the breadboard, but nothing have helped.I'm quite sure that I at some point during my tinkering have seen values higher than this, but I simply cannot reproduce that now.The sensors were bought of eBay, is this issue simply because the sensors are of poor quality ?I'm open to suggestions if anybody have an idea that can help me.Regards,Rasmus
I have already tested with the simple sketch from the NewPing library, and it didn't help. I guess the sensors are of a too low quality..