Hi guys, like Czetie said I'm new hear and know as much about this stuff as the difference between my elbow & a!.
I acquired the "GY-BMP280-3.3 Pressure Atmospheric Altimeter Module Sensor Tool U", pined it up to 4/5 and 5v pins got the bpm280 prog loaded up on my unoR3 opened serial monitor and off it went, fast ! but with the odd number a load of reverse question marks and the odd letter, question is, what have I done wrong, I'm using a iMac.
Help is alway very welcome guys.