How to edit EV3 bluetooth default passkey?

[Pete Thomas]

Sorry this may be a dumb question, we have acquired 10 x 45544 ECV3 Core sets just this week.
How can I change the default Bluetooth passkey (1234) to a unique pass key for each of the EV3 Pi-Brick devices being used at any one time?
Sincerely,
Pete THOMAS
Kantvik School,
Kirkkonummi, Finland

[Ian Chow-Miller]

When pairing two robots together, a qwerty keyboard appears that allows you to change the passkeys on the two robots you're pairing. I don't recall if there's a blanket way to do it from the beginning.

May I ask why you want an individual passkey? For my students (age 12) it's always been easier to keep the default, because otherwise they forget.

Ian

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[Pete Thomas]

Thanks for your reply. I received an answer from the Lego customer service that it is not possible to change the default passkey. Although I have individually named my P-Bricks, my thinking was to reduce the temptation for one group of pupils to "log on" to another group's P-brick via Bluetooth and download or even delete as a prank.

Yours sincerely.

Peter Thomas

[Ian Chow-Miller]

If you try to connect one robot to another, the second robot must accept. I have found this stops the surreptitious attempts of students to try and connect to a robot that they are not partnered with. Or I may just be lucky.

Ian

[Damien Kee]

But you do run the problem that if they have been connected in the past, you can bypass the passcode.

A master EV3 however can't do anything to a slave EV3 without a corresponding program on the slave EV3 to accept and parse the data being sent.

I would love to see if anything *could* be done maliciously from a Master EV3 to a Slave EV3 without the slave needing a special program already running.....  you know....  for <air quote>research</air quotes> purposes :)

Regards

Damien Kee

[Ian Chow-Miller]

If you're partnered with a new robot you can remove the old robot from your by connections - if you remember. 

[Damien Kee]

Firmware update should also do the trick.

[Evan Timothy Tj]

how to reset EV3 passkey if forgot?