A Lego Wi-Fi QR code.
No more reading passwords out loud: a Lego board on the wall that connects guests when they point their phone at it. Enter your network details and get the plan and parts list instantly.
Parts list
| Part | Lego no. | Qty |
|---|
Grab a few spares of each piece, they do get lost.
Row by row
Rows count from the top, columns from the left. Vertical pieces are listed in the row where they start.
How to build it
Get the pieces
Buy the baseplate and the black pieces in the list. Flat tiles look smooth like the photo, studded plates are cheaper.
Start with the three big squares
The squares in the corners tell the camera which way is up. Placing them first makes the rest easy to find.
Go row by row
Print the numbered plan and tick off each row. One shifted piece can make the code unreadable.
Test before pressing down
Place the pieces loosely and scan with your phone. If it joins the network, press everything down firmly.
Hang it up
Tie a string to two corners or put it in a frame.
FAQ
Is my password safe?
Yes. This page never sends or stores your password. Everything is calculated in your browser.
Why does it not always fit a 32x32 baseplate?
A Lego baseplate is 32 studs wide. The largest QR code that fits is 29x29 and holds about 35 characters. Long names and passwords need a bigger board.
What happens when someone scans it?
The iPhone and Android camera recognise it and offer to join the network. No app needed.
What if I change my password?
The QR code changes too, so you would need to rebuild it. A guest network with a fixed password works best.
Do I need genuine Lego?
No. Compatible bricks work as well. What matters is dark pieces on a light baseplate.