This will be the support thread for my watch application: TruFlite Ballistics
TruFlite is an exterior ballistics program for long range shooting. It contains a highly accurate, yet stand alone ballistics engine that is extremely fast. Designed to not rely on connecting with a phone for data input or for calculations.
https://apps.garmin.com/en-US/apps/c8a08648-1344-4dd5-ac3d-6a54b165db5c
I will post release notes here as new versions are released as well as the main application page.
Feel free to post questions, comments, feature requests, or bug reports here or send me an email directly using Contact Developer
Operation:
OK/Select - Calculates a firing solution
UP/Previous - increase range by current range interval setting, default: 25 yards/meters
DOWN/Next - decrease range by current range interval setting
Menu -
Cross Wind - wind speed in mph/kph/mps. To keep input simpler just cross wind, not wind and direction.
Ambient Temp - Farenheit/Celcius, device temperature can be affected by body temperature so it is more accurate to provide one
Muzzle Velocity - launch velocity in fps/mps
BC - change the Ballistic Coefficient and select Drag Curve (G1 or G7). Assumed that BC is ICAO relative.
Sight Height - height of sights in inches/cm
Zero - range (yds/m) at which weapon was zero'd
Units - Allows changing units of any variable between metric or imperial individually.
Options - Change Range Interval and Turn on/off use of external Tempe temperature sensor
About - Get to current version number
Units / Elevation Units - units for Elevation correction to be displayed in: inches, cm, moa, mils
Units / Windage Units - units for Windage correction to be displayed in: inches, cm, moa, mils
....
When calculating a firing solution, TruFlite uses the current Ambient Barometric Pressure from the device's raw sensor in order to provide the most accurate solution for your current environment. This value is displayed just above the firing solution and will be displayed in green, indicated the value came from a sensor. For slightly older devices that do not allow applications direct access to the raw pressure sensor, the device altitude is used to calculate current pressure. Temperature is manually inputted or retrieved from an external sensor, since the internal temperature sensor of the watch is affected by body temperature and therefore provides an inaccurate ambient temperature.
If you have a Garmin Tempe Temperature sensor and wish to use it with TruFlite, simply follow the standard instructions for pairing the sensor with your garmin device. Once your garmin device has successfully found your Tempe sensor you can go to the TruFlite Option menu and turn the "Tempe Sensor" option "on". In order to conserve battery, the Tempe sensor only transmits temperature readings approximately once per minute. Therefore, when you first turn it on, it could take up to a minute before TruFlite will see a new value from the sensor. If TruFlite sucessfully gets an external temperature value it will be displayed in green, otherwise TruFlite will continue to use the manually provided temperature value, which will be displayed in white. Hitting/tapping OK/Select will cause TruFlite to update all sensor values and the firing solution.
The TruFlite ballistic engine is very fast. No need to pre-calculate any values and should return a firing solution immediately. If you wish to discuss ballistic engine internals feel free to contact me.
Accuracy: TruFlite results have been compared to several defacto standard ballistic engines; such as Applied Ballistics and JBM and is within inches or 0.25moa out beyond 1500 yards for long range cartridges and under various environmental conditions.
