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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@hydronics
Hey! I did some more testing and found the error using this remote console tool called JS Console... https://jsconsole.com/?%3Alisten
Here's the error every time the standard 2 byte heart rate monitor value is sent to Web BLE...
"Unexpected characteristic value notification for device 810058E3-27E6-4D1A-A9A8-FC8C4C357D84 and characteristic 2a37"
.... let me know what else I can provide...