I was think along the lines of an Arduino with Bluetooth module (built into the Chronograph) , but I don't know enough about the BT protocol to know if this is a workable.

It won’t even allow you to input a measurement photo manually, although you can manually type the group size in the group size box. The light sensors were spaced 18" apart for more accuracy and the sunscreens have self-contained LED lights when a little extra light is needed. It might be possible to decompile the app though; with a little bit of look the required pairing data could be there in plain sight. The only thing I would ask to improve on the pictures is to be able to zoom in afterward, only improvement.Data transmitted includes average velocity/standard deviation/min/max and velocity spread for the shot string. I don't know how Caldwell implemented the BT upgrade, do they still send 3khz data down the audio Mic channel (simplest way I guess) or did they go all fancy and decide to digitize the information over BT. High-speed 48 MHz processor and advanced data interface circuitry that allows the chronograph to be computer calibrated at the factory after assembly, meaning a highly-accurate chronograph (+/-0.

Caution: most artificial lighting connected to 220 V mains flashes at 50 Hz and causes measurement deviations or makes measurement impossible.When prompted “Caldwell Ballistic Precision Chronograph” Would Like to Access the Camera - select OK. The mic line is modulated with a 3khz data stream (400mv p-p) which communicates readings to the app. Missed or late payments may result in additional fees or interest and will affect your credit file and your ability to obtain credit in the future.