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….....................................--- HandCab WiFi Throttle – Part 2 ---

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The first print of most of the top part of the throttle. Before finishing up the design of the case top, middle and bottom I thought I'd better see how I liked the control stand at the top. Designs can look quite a bit different on a computer vs. printed and in your hand.

I need to make a couple tweaks to the design but minor ones as I'm happy with how this is coming out. Somehow I printed two brake handles so the reverser handle that is shown needs to be printed.

The controls work well and I like the feel of them. The throttle handle has 9 positions total, idle and 8 throttle steps. I designed it with a ball bearing in a round channel pushed by a ballpoint pen spring and a set screw for pressure adjustment. Works as good or better than I hoped it would. Easy to move the handle from detent to detent and easy to adjust the feel.

The brake and reverser have no detents but also have fewer positions so not the need for such precise positioning.

The reverser at the bottom is either centered or to one side or the other so it will be easy to read the pots position and know where the lever is.

The brake will be either off or a couple positions before being full on, so more of a 'feel thing' vs. precise steps like the throttle needs to be.

All of the controls only read about 120 degrees of the pots travel/resistance. I believe that is plenty even for the throttle to determine where it is and what to do based on that position. I put the multimeter on it and the throttle is very repeatable for the detents. I won't use the exact reading at any detent position but a range on both sides of there.

Will write some simple code next to read the pots and if all is good after that print the rest of the case out and the top for this section of the throttle.

To be Continued …...

For the whole build of this throttle go ( HERE ).

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