@Gordon do you have any example, of how to speak with the HM-10 (connected by the bluetooth shim)?
Is it done by RX/TX over A2/A3?
Well, there's a but of info on the HM-10 itself here: http://www.espruino.com/Bluetooth+BLE
And the circuit is below. As you say, A2/A3 are RX/TX, but also Pin 23 (which it seems you need for config) is on pin A4, so you can toggle it in software.
I haven't used one, but it looks like they're AT command-set. You might find that the AT module is quite useful - there's no page on it, but there are some comments in the code, and you could look at the ESP8266 module for some examples of its use.
Thanks, I will try this
What about HM-11 board? Iam using B6,B7 for TX,RX. But do I need the system key to solder (HM11 pin 16) with A8? (http://www.elecrow.com/download/bluetooth40_en.pdf)
Edit:I tried with A8 but It seems I cant connect to the bluetooth module. When I try to connect to tty.Bluetooth-Incoming-Port, I cant write any command :/
I'm afraid I don't know - I haven't used HM-11.
Could it be that the baud rate is different? Espruino expects 9600 baud by default - to change it you need to call Serial1.setup(baud_rate)
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