@JonnyMac In which one of the Parallax videos do you discuss using a heart rate sensor with the Nextion HMI? I want to purchase one of the heart rate sensor.
I think it was the first one, Carroll. Keep in mind, it's just an LED and an IR sensor. There was an article in N&V about doing the same thing with an LED and a CdS photocell.
This is what I ordered: