Increased sampling (read) rate; corrected frequency calculation
Changed when AC characteristics are updated to every 5 seconds
Merge branch 'master' into basicACProcessing

* master:
  Increased sampling (read) rate; corrected frequency calculation
Merge branch 'master' of https://github.com/kevinjliang/BME464

# By Matthew Lu
# Via Matthew Lu
* 'master' of https://github.com/kevinjliang/BME464:
  Wrote code for outputting a given voltage value using PWM output pin 6