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Triaxial Quartz Movement Upgrade

by mcmaven Jun 8, 2019
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Hi, on your second video you show an upgrade using an Arduino UNO and a stepper motor. I have all of these parts and I would love to do it . I am actually printing the parts. Could you post the elements of this upgrade and the UNO programming lines. Thank you so much for your beautiful work.

Hi Serge,
My original "Dual Triaxial" design supported 2 (dual) stepper motors; one for the turning the carrier, and a second for controlling the hands and keeping the correct time. I never posted the files because I never actually got it working.

With the 'Dual' design, the motor control was tricky because the 'hands' stepper motor needed to change speed (to almost 0 RPH) when the 'carrier' motor was on, and switch to exactly 6 RPH when the 'carrier' motor was off. The motor speed issues are actually more complicated than this, but the details would take too long to explain. In any case, I struggled with the Arduino code need to get the two motors to work at the correct speeds to control the time and the escapement accurately, so I gave up and sent it to ruzickjc to see if he could figure out how to get it to work. He basically gave up on the dual motor idea too. Instead, he removed the 'hands' stepper motor, and added a quartz movement to control the the hands. He did his quartz movement implementation by making some minor changes to some of the STL files. He left the 'carrier' stepper motor, and modified the code to allow a rotary encoder to be used to adjust the speed, and to support a 7 segment display to show the current speed. The 'second video' showing the 'Dual' motor base was made by ruzickjc, not me.

The ino code distributed with the TT Furious is the same code that he demoed in his video. I didn't add support (a hole) for a 7-segment display to the Furious, but the code supports it if you wanted to cut a rectangular hole in the base.
You need to contact ruzickjc to get the STL files that he modified to add the quartz movement and the display in his video.

After seeing how he added the quartz movement, I got motivated and posted my version (, which simply adds a quartz movement to the original weight driven Triaxial design (no new base or 'carrier' motor). The only differences between his quartz movement design and mine, is that mine included: 1) a cover to hide the quartz movement, 2) 'balanced' hands, because we found that even the 'high torque' movement didn't have enough power to reliably drive the original hands, and 3) a larger counter weight to offset the weight of the movement.

Attached are the files the original Dual files that I sent to ruzickjc. I still have not taken the time to get it working, so you will have to figure out how to use them on your own. I would watch ruzickjc's video ( to see how it fits together. Note, if you don't implement the 'hand' stepper, then some of the gears in the attached ZIP file are not needed.

Regards, McMaven

Triaxial Quartz Movement Upgrade
by mcmaven

Hi mcmaven,
Thank you so much. For what I understand the hybrid design with a quartz movement and a stepper motor to get the Tourbillon clock ticking and turning looks to me the most 'elegant'. In all cases I am still waiting for some bearings ordered from Aliexpress so I have not been able to have all the parts assembled. I am going to finish the regular (primary) version and surely update it to the quartz version. For the stepper motor version (thank you again for the files), I have loaded the TT Furious stepper code and the speed is adjustable on a very wide range but the switch works reversed meaning the motor spins as soon as I power the arduino and turns OFF when pushing the switch. When I read the code (I am quite new to this) it seems to me that the switch should turn the system on and do nothing after that. But in my case it is just reverse. Maybe my rotary encoder is different.
I will check this with a little more time. So thank you again for making my time a lot of fun.

Hi, the build notes say in section 1.4.1 "Press a 2mm dia. 15mm long shaft in to each end of the TQ Face Hourgear1 shaft.". However the TQ Face Hourgear 1 has only one hole for a 2mm shaft to go into. Is this a mistake or am I getting something wrong?

It's a mistake.
A 48mm long 2mm shaft goes through the TQ Face Hourgear1 gear, from the hole in the Carrier Bottom to the TQ_Face_Movement_Cover_Bottom.
I just posted updated documentation. Thanks for pointing this out.

Hi, I am about to purchase that Youngtown 12888 thingamadoo according to your Amazon source link. Did you use the 4/5 inch total shaft length or the 29/32 inch total shaft length version?

Thank you!

Either one will work. I used the 4/5 inch and the hands have to be pressed on very flat, otherwise they can catch on the frame. I would recommend ordering the 29/32 version, this would give you .1 in more spacing of the hands off the frame.

OK, thanks! I will use the 29/32 version - I think they are both for the same price. PLEASE, PLEASE, PLEASE, can you stitch together that Whole Earth with it´s shaft and try making the Moon with a solid infill. I am almost done printing everything else so now it is time for the Earth and the Moon to get made.

I appologize for bugging you so much on this one...