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Hi, if the sensor speaks Bluetooth Low Energy there's a chance it implements the Heart Rate Profile. You can talk to it using any BLE library or right from your browser with Web Bluetooth (newest Chrome only), see e.g. https://github.com/WebBluetoothCG/demos/tree/gh-pages/heart-rate-sensor
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Welcome to Arduino
Looks like the COM5 port is taken. Try changing the source and / or use the devmgmt.msc command line tool to assign another port.
The error text font is too small to read, sorry.
Hi Bubacar, thanks for the link. Your product looks very nice and kid-friendly! I don't sell the reader right now, sorry.
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