I’ve set up my skywriter XL on a Raspberry Pi 3 and it seems to work fine. What I have noticed, however, is that I can’t get anywhere near the 15cm maximum range that is advertised. The best I can get is around 5cm, anything beyond that it doesn’t seem to detect. Where’s the switch to get the advertised range? Should I be supplying it with 5v instead of 3.3v?