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  • DIY ECG EKG Portable Heart Monitor

    Bit of a challenge finding everything but got there in the end.I found I needed an old library for the DS1302 (3/6/2015)and only one Adafruit-GFX Library in my Arduino Library listelse I got compile errors.It was good to see the trace go across the TFT finally.I ended up putting some gain in to make the signal biggerand adjust the trace reference level.Just read two other Analog I/Ps with POTs and adjusted the numbersCode mods below. valLevel = analogRead(1); // read the input pin from pot for trace Level valGain = analogRead(2); valLevel = valLevel * 5; // Range from 0 to 5116 valGain = valGain / 100; // Range from 0 to 10 // analog read to do a fuller screen val = val * valGain; val = val - valLevel;Will look at the reference level with an external voltage referen...

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    Bit of a challenge finding everything but got there in the end.I found I needed an old library for the DS1302 (3/6/2015)and only one Adafruit-GFX Library in my Arduino Library listelse I got compile errors.It was good to see the trace go across the TFT finally.I ended up putting some gain in to make the signal biggerand adjust the trace reference level.Just read two other Analog I/Ps with POTs and adjusted the numbersCode mods below. valLevel = analogRead(1); // read the input pin from pot for trace Level valGain = analogRead(2); valLevel = valLevel * 5; // Range from 0 to 5116 valGain = valGain / 100; // Range from 0 to 10 // analog read to do a fuller screen val = val * valGain; val = val - valLevel;Will look at the reference level with an external voltage reference from a zener diodeto get better definition of the trace dataas suggested in the instructions.All works good now, thanks.

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