So I took a electronics class recently and for my final project I made a simple weather station to get Temperature, humidity, Station pressure. I currently use Ballistics ARC for IOS and if you manually input that data it will calculate the range card. I am looking for feedback and if possible someone that has a kestrel or similar that is in the Los Angeles area to meet at a range so I can compare my measurements. Right now its in the prototype phase but the box it will be housed in will be small (3"X1.5") It runs on a 9V. As far as I can tell the density altitude is off and am still working on the formula and code.