Single Lever key.

Description

Manipulator of electronic key of own design.
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The basis of the mechanics is the "latch" lever in the neutral position with the help of pins, which fixes the lever in its initial position and prevents the "bounce" of the main lever. The arms of the manipulator are mounted on an axle with ball bearings, the lever is made of a light AL alloy, this design allows to obtain a very small centrifugal mass and the absence of a noticeable inertness of the system at a high speed of manipulation, even with light touches.
The design uses four miniature bearings, the backlash of the bearing is selected with an adjusting nut. The adjustable contact is made from a setscrew with a drop of silver on the end, the contact on the lever is connected to the lead from the flexible wire, which eliminates the passage of the signal through the bearing.
The "spring" is magnetic. Reversal of the dot-dash is carried out by changing the connection of the wires on the contact racks. Adjusting screws for the installation of gaps, tension - for a 2 mm Allen key.
The handle is made of plexiglas.
Fastening to the surface with a double-sided adhesive tape or screws.
The base is textolite, 70 mm long, 20 mm thick.  Full weight with  115 grams.