So a while a go I hooked up one of those sharp proximity sensors to my arduino. I ran a digital read, it went well... when i put my hand infront of the sensor the number got lower but when i moved my hand further the number got higher. Now when I hook it up the numbers change randomly and they only change a few numbers (up or down). I tried many things and i could not figure it out. The weird thing is that when the sensor is not even connected the numbers still appear. Ant ideas?