I don’t think there’s any point in making this one anymore, as the single-engine lever with head support is as smooth in movements as this one, yet collective switch panels (heads) allow for additional functionality, like idle-stop support. This one will probably be used later for RC FPV flying =)
1 x 250x10x10mm aluminum square pipe
1 x 20×10 aluminum rectangular pipe for chair mounting (the mount for the IKEA GUNDE chair is included)
1 x SS495A hall sensor
1 x 10KOhm LINEAR potentiometer
1 x 6x6x4mm square magnet
4 x 3x40mm screws and nyloc nuts to connect the frame to its enclosure
1 x 3x40mm screw for lever connector axis strengthening
4 x 3x45mm screws for tensioner halves contraction
4 x m8x75 bolts, spring washers, and nuts
2 x 608 bearings (standard skateboard bearings)
1 x Arduino Pro mini
1 x Simchair MKIII I2C controller
super glue (cyanoacrylate)
Start with press-fitting an SS495A sensor into its socket. Solder its wires and bend the legs, fix everything with drops of super glue. Then, insert the lever connector into its frame and press-fit 608zz bearings. Insert M3 screws and put nuts onto it to fix bearings in place. Put the magnet into its socket.
Put the frame with a connector on it into an enclosure and fix it with M3x40mm screws and nuts (we will mount tensioner halves on them later). Insert 10x10x250mm aluminum square pipe (alternatively, you can replace it with a printed part, but an aluminum pipe is stronger and will feel better).
Put a decorative cover on the lever frame and the rear throttle mount part, glue the latter to the decorative cover with super glue if needed.
Put a potentiometer holder part onto a frame, fix the pot in it, solder and route its wires through a lever. Turn a pot to its full extent to the right, and put the throttle handle on. Press-fit a wedge into a slot of a pot handle to fix the handle. Finally, put tensioner halves on and fix them with nuts (they should be able to move but not wobble around), then screw them together with M3x50mm screws. Put the bottom cover and fix it with M8 screws after you’ll finish with soldering wires to an arduino. The mechanical part of the assembly is finished!
As usual, we use a half of an ordinary ethernet cable crimped as shown on the picture above to connect our collective to the controller.
Connect an Arduino Pro mini as follows:
PIN10 – SS495A/potentiometer VCC
GND – SS495A/potentiometer GND
RAW or VCC – orange-white ethernet cable wire (+5V)
GND – orange ethernet cable wire
SDA – blue ethernet cable wire
SCL – green-white ethernet cable wire
A0, A1 SS495A and potentiometer signal wires (A0 – throttle, A1 – collective, or change this in the ino file)
Flash it with the i2c_simple_collective.ino file and enjoy flying with the filtered 10-bit resolution!
Simchair MKIII I2C latest software on GitHub