RFID Drawer lock antenna extension

Projects
1

Barely worth the post, But I thought I should share just incase it helps somebody

The typical cheap RFID drawer / cabinet lock, as pictured below

image

Sometimes you may want to run the antenna remotely, especially if you’re trying to get a read through a thick surface

I should have taken a photo BEFORE I modded it, but I didn’t, but here’s an open and modified view

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Tool list
Small phillips screw driver
Side cutters / wire strippers
Soldering iron / solder
Wire
Heat shrink / electrical tape
Winning attitude

Here’s a labelled image

image
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Steps
Remove batteries ( 4 x AA )
Open up case ( 4 screws )
Take care of the metal bar and cogs, it tends to move when the cover is removed
Remove PCB / Antenna ( 1 screw )
Unplug wiring
Desolder 2 motor wires ( take note of colours to ensure correct motor direction )
Solder RED Wire extensions on to Positive battery terminal
Solder Black Wire extensions on to Negative battery terminal
Solder 2 x Motor wires extensions on as per note / photo
Slip heat shrink over wires
Solder the correct colour extensions to the originals
Shrink heat shrink
There is a natural path for the wires to feed through
Place the cover back on with the 4 screws
Place batteries back in and test operation

Job done
Step back and admire your work

9 Likes
2

Or. You could do one of those antenna focusing tank circuits and put it over it. I’ve done that with the IKEA lock with success

1 Like
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Great idea, I ruled that out because i was trying to go through Aluminium for that project :thinking: It MIGHT work for and iso card, but I highly doubt it for an implant.

Still a very good suggestion for other uses though.

@turbo2ltr’s night stand spring to mind