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I have worked on many Arduino projects but this time I am facing some hurdle that is too strong for me.

I want to use a Bluetooth module as a MASTER. Purpose: Connecting to a camera and sending instructions to take photos.

Problem: When trying to connect, the camera prompts a security key which you can type on a smartphone. Problem: I didn't find ANY way of doing this with an Arduino.

The closest I was is using AT commands to set the same passkey as the other device. Problem: it has to be done before the connection attempt, and in my case, the passkey could not be guessed…

Therefore I'm as stuck as frustrated!

I have various BT chips on hand : HC-05 HC-08 MLT BT05… so various solutions available. Will buy other ones if needed.

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