Other than there likely isn't a part for the sensor (although it would be easy to make one from the generic part) if you enter your (presumably working) breadboard layout in to breadboard view in Fritzing it will create most of the schematic for you with rats nest lines indicating where the wires go. I made an OLED part for someone a while back and at least the company name (may or may not be the same model) is familiar. However I'm going to guess that your circuit doesn't work because you don't actually appear to have a reference voltage just a capacitor (which will effectively give a reference voltage of 0 unless you are using the internal reference). There likely needs to be a connection from the ref connector to the 3.3 volt rail to actually get a reference (and then you likely have noise problems as he indicated). For really good results you would need a higher voltage battery feeding a 3.3V regulator and an external voltage reference chip to give you a clean reference voltage.
↧