Simulator rig with ODrive

Stijn_Carelsbergh · August 21, 2018, 7:41pm

hi,
is the cardan your center of rotation then? or?
greetigs stijn

Zennix · August 22, 2018, 5:39am

Hi,
yes.

Greetings / Zennix

Stijn_Carelsbergh · August 22, 2018, 5:41am

hi,
Ow okay I’m making a 6 dof

greetings stijn

Zennix · August 22, 2018, 5:53am

OK, great.
The goal far far away should also be a 6dof. But we are the first using ODrive for that and I want to keep the cost and effort as low as possible if it fails.

Greetings / Zennix

Stijn_Carelsbergh · August 22, 2018, 5:57am

hi
hi that’s also true but normally it should work according to me, am I wrong?

I’m using a 6368 motor so that’s a bit bigger than yours

greetings stijn

Stijn_Carelsbergh · August 24, 2018, 7:11am

Hi,
Can you share the ODrive case with us?

you can place it here
cheers Stijn

Stijn_Carelsbergh · August 24, 2018, 7:12am

Hi,
how did you attach the carbon tube to the ballscrew nut?

cheers Stijn

Zennix · August 24, 2018, 2:44pm

Hi,
yes I could share the CAD datas, but it’s very special. It fits only to this kind of motor and the aluminium frame. Therefore I will wait with sharing till my prototype is working.

Yor second question:
I have designed a 3d printing part thats squizes O-rings inside the carbon tube. Don’t know if this will be enough.

The other side at the ball screw nut has to be glued. 3M 2216 is the best but extremly expensive. UHU endfest could be an alternative.

Greetings / Zennix

Zennix · August 24, 2018, 2:52pm

Hi all, time for an update.

machining a heatsink for the power resistor.

And the base chassis

Now waiting for:

limit/home switch firmware
CFK tube for the second actuator

Greetings / Zennix

Stijn_Carelsbergh · August 24, 2018, 2:55pm

Hi,

Nice little update. I actualy meant the ODrive casing.

Zennix · August 24, 2018, 2:58pm

Ah, OK
If I find some additional time, I will remove the Zennix and share it.

Greetings / Zennix

Jerry.Atrick · August 25, 2018, 7:17am

Hi Zennix, very cool, I can’t wait to see your works in action

Regards Jerry.

Zennix · August 31, 2018, 6:14pm

New Update:

placing a anti shaking ring to the ball screw.

I decide to change the powersupply to DELL server PSUs. Each offers 12V and 53A. To put it serial for 36 Volt I had to disconnect the AC ground and the DC ground. Otherwise
Additional I connected a LM34 to the fan control line so it runs depending on the temperatur. Next was a relais to switch all three on together.

Greetings / Zennix

Stijn_Carelsbergh · August 31, 2018, 10:30pm

Hi,
It’s me again, I don’t think the ring will last long, I have been thinking about other ways to do it, bit I haven’t found a better solution.

The power supply’s are not for only 1 motor right?

Cheers Stijn

Zennix · September 1, 2018, 7:39am

Hi Stijn,
power supply for one ODrive with two motors.

Greetings / Zennix

Zennix · September 14, 2018, 10:36am

Time for an update.

The missing parts have arrieved.

First Actuator is completed. Second is 90%. Need it for testing without transmission belt. So mistakes cannot crash it.

Finally I’m waiting for the firmware with endstops.

Greetings / Zennix

Jerry.Atrick · September 14, 2018, 10:47am

Hi Zennix, fantastic! I can’t wait to see you drive

Regards Jerry.

Stijn_Carelsbergh · September 15, 2018, 10:33am

Nice work!

Cheers
Carelsbergh Stijn

Zennix · September 30, 2018, 9:19am

Hi all,
Time for an update. After Wetmelon has finished a version of the firmware with endstop support I was able to put the things together.

Homing:

NoLimts2 Ride with 50% axis.

It’s not perfectly tuned, but so good so far. Next tests with load.

Thank you all for your support.
Greetings / Zennix

Jerry.Atrick · October 1, 2018, 8:14am

Hi Zennix, thanks for the update, looking good, hope to see you in the seat having fun soon.

May I ask about the chair?

Regard Jerry