ECG Not working

[saisrinivas25]

I tried to connect the electrodes as mentioned in the diagram.
But it doesn't work properly and I am getting an unusual heart rate on the monitor.
It keeps on fluctuating. Kindly let me know the proper connections in detail.

[VenkateshBhat]

Could you please attach the screenshot of signals obtained?

[saisrinivas25]

Here are the screenshots.
Somehow, the record was not working on my PC.
So I have taken these snapshots.
Issue is only with ECG, SpO2 is working fine I guess.
And I have red, blue and black coloured electrodes. please let me know the electrodes' spec properly.
I mean, which is RA, LA & LL?

[VenkateshBhat]

Thanks for sharing, where did you place the electrodes? was it on the chest?. Baseline is wandering too much.
RA : Red
LA: Green
LL : Black

[saisrinivas25]

Thanks for the info. So, I had placed the electrodes in proper positions.
I had tried placing the electrodes both on the chest and on limbs as well.
But I got the same kind of fluctuating reading.

[saisrinivas25]

What is the baseline you are referring to?
I understand that green is heart rate, blue is respiration and yellow is SpO2.
But, is there anything else I need to understand from the GUI?
And why there are readings on the GUI even when there are no devices(ECG or SpO2) connected to the HealthyPI?
Please help

[VenkateshBhat]

I am referring to the ECG signal moving up and down rather than straight. Are you using the latest Ui?

[saisrinivas25]

Yes. I am using V0.3

[saisrinivas25]

Can you please tell me what the conclusion is?
Is the HealthyPi hat faulty? It is showing readings when there is no device connected also.
Or how can I get proper readings of my vitals?
Please advise

[famesjranko]

I just got the latest v4 and also has readings showing when no device connected. I think there are serious design/implementation issues with this device...

[MohammedHM]

Hi Andrew,

Can you please share the screenshots of the output, and the image of your HealthyPi setup.

[famesjranko]

Hey MohammedHM,

Thanks for responding. I've been trying to figure out the packet data structure and encoding come through the raspberry pi port serial /dev/ttyAMA0 without any luck. Could you please point me towards the documentation for this?

Looking at the gui.java file located in the source directory, I was able to see that you are writing to CSV file and thought about editing that section to parse the data where I want to send it, but I found that I can't compile that file and the actual code being used is in .jar files and thus inaccessible to me. Would it be possible to have access to these files for easier modding?

The reason I was interested in your project and bought the device was the open-source nature of it, but I've found the software to be opaque rather than transparent...

I will provide screenshots shortly, but simply put I get a heart rate even when there are no sensors connected, and the spO2 sensor only gives values when the ecg sensors are connected - not sure if that last one is a design or a bug. And the device is the v4, which has the image it was shipped with.