Ok now the coding part, I got the example code running, and its like 10 feet off the altitude of where I live, but thats no big deal. I dont have any idea on where to start with coding.
The code would go something like this:
Zero the sensor once the arduino is turned on <==== The part I need help with, I have nothing with the coding, if i have one small example, i could go from there, and that would be greatly appreciated.
Read pressure and calculate it to feet every 5ms until it reaches 730 feet (730 feet because it will have some lag with the parachute catching.)
Turn servo
this is kind of scary lol