opened
ReeceStevens
username_0
Added a digital lowpass filter to the ECG as well as some calibration
values to ensure that the signal displays properly on the screen. Also,
the ECG output values are being printed to the console for external
analysis.

Digital filter specs are: 10th order IIR equiripple lowpass represented
as 5 SOS in direct form II, fc = 25 Hz. The exact specifications and
cutoff frequency may change if a better filter configuration is determined.
Add digital lowpass filter to ECG
issue
created
ReeceStevens
username_0
<img width="773" alt="screen shot 2016-06-28 at 10 06 43 pm" src="https://cloud.githubusercontent.com/assets/5847947/16439727/c19fbb42-3d80-11e6-8b12-eb3442f6194e.png">
comment
created
ReeceStevens
username_0
Current filtering setup shows dramatic noise reduction, and preliminary builds of this branch are showing similar results on the display. I ran out of ECG electrodes so I won't be able to conduct more tests until the new ones arrive in the mail.
comment