@magpern said in EFEKTA BME280 Sensor: That the vias where 0.2mm drill and the fab houses I tried charged 10 times extra for 0.2 drill than 0.3. But I don't think it is a problem changing them to 0.3 (I changed it in the drill file). The copper pads on the vias are 0.5mm in diameter, and a drill with 0.3 will still work. Green 0.2mm drill, yellow 0.3mm drill, red is copper. If you change yourself, I think this is not a problem with the inner 0.3 and the outer layer of 0.5 problems will not be