• When you send value : 0x2C06, Espruino doesn't know it's supposed to be sending 16 bits - it just sends it as an 8 bit value.

    I think you probably want: value : [0x2C, 0x06] and that'll fix it.

    Those flags are for the characteristic itself (rather than the data) - I really don't think you need to delve that deeply - where's the adafruit example code?

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