HRM heart rate monitor

[ioannis]

I found the extension in a link, in a relative post. I'll try to find the link and send it to you.
The error message is all the above in my post (following the block image).

Edit: I just found it! it is downloaded from ewpatton, MIT, Dropbox:

Reading BLE service in Appinventor

I’m rather surprised by your report that using read/register for bytes returned nothing. The bytes representation is the most basic and essentially gives you access to the underlying packet without any interpretation of the values. Every other type requires some interpretation as each type is larger than 1 byte (other than bytes, of course). I also want to point out that the heart rate service and heart rate measurement characteristic are a bit more sophisticated than just reading a value off t…

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thank you in advance