6 DOF from scratch

[QUOTE="Pierre Lalancette, post: 133365, member: 23761"


First question out of ninety-nine. Just kidding. What are the screw you use on top for your 8-10 mm tube? Do you just force them in or do you glue them somehow? I am running a rod all the way through and I thought I might reduce weight if I only use screw at ends. Maybe it's not worth it, but I would just like to know.

I guess you use epoxy glue, but I don't recall mention of which one. Do you recommend any for carbon tube?

[/QUOTE]6mm Nut inserts are slid into the ends and held in place with epoxy. That way everything can be pulled apart if necessary and you will need to pull it apart for maintenance. I used 3M Scotch Weld 2216 Epoxy - use this sparingly - it is expensive.

Yeah, I had seen this video:



And he recommend exactly the same epoxy. Since it was expensive, I wanted to know what you were using. Since you both recommend it, I guess it is because it's worth it.

Did you add this link?

https://www.ndindustries.com/

Because I think it messed up with the 'quote' code and I was not sure if it was not publicity. Is it what you use as 6mm nuts? And when you need to service the actuator, you just unscrew and it breaks the bond between the screw and the tube, right?

First test ever. Since I can run my motor on 12 volts, I decide to test it with my pc power supply just to see. I set up the camera so I could record the first test ever. You can see that it is the first time I test it as I have a jump scare when there is a spark at the beginning.



And it works! It works with friction on the structural carbon tubes, but it works. Can't wait to set up the potentiometer and limit switches.

First actuator from scratch!

I did not add any links... likely AD software on your computer. I use nutserts similar to these below. These are bonded into the tube and are never removed. Hex screw is screwed into this.

Ah! the invisible missing part. Thanks, that was the information I was looking for.

Ordered booster cable gauge 4.
Ordered 20 x 12cm fan. I might have been a bit excessive on that one.

Quick question for the electronic guru.
On many connections drawings of sabertooth 2x32, there is a power resistors connected from power to 'Power Output'. In the doc, they say this about the power output.
Power Outputs These open collector outputs can sink up to 8 amps of current each. The power outputs can be configured as Voltage Clamps, Brakes or Controllable Outputs.

But my sabertooth 2x60 does not have such input. Does this mean I don't need to worry about any power resistor? Is the 2x60 so powerful that it will handle it for me?

From the website for the 2 x 60 'Use a battery or at least put a battery in parallel with a DC supply.' Basically does the same thing .

Ok, thanks, missed it. I wanted to do that anyway. Good to know that a battery in parallel is the proper practice.

Hi Pierre, congrats on your progress so far. It's looking great. I've been following yours and SeatTimes's build for a while as I'm looking to try my luck at building something in the very near future.
It looks like your planning to use an HTC Vive with your motion rig. I've heard there are issue with mounting the lighthouse base stations to a moving platform, something about how if they get jolted they turn themselves off to protect the moving components inside. Have you found a solution for this issue?

See this post and the following ones. Some people are working really hard to find a solution for the Vive. It is basically to put a tracker on the rig and use cancellation algorithm to keep only the moving head.

so whats the verdict? Oculus or Vive?

I hope it will work fine. It should be part already of Vive drivers. Shame.

Oups, I thought that link was in the post I pointed to. My bad. Thanks @noorbeast .

Thats fantastic. Looks like it works fine for the Vive. Thanks for the info guys.

I have receive other gifts from Santa.



Cables and strap locks. Those wires are huge. They might be hard to solder to the power supply. Anyway, I don't think I'll have much time this weed-end to work on the power supply.



Some wood for the base. I help my brother with cutting all is wood, like we do every years, and I ask him to have logs to build the base of my simulator. Will have to determine the size of it and cut the wood accordingly.

How seasoned is the wood? Hate to see it all warp on you when it is sitting as the base of your sim on a floor.

I asked my brother if it would work over time. I know as much about wood than about DC motors. He told me that it has been cut for a long time and there was no problem. It is hemlock spruce, quite heavy.

Trying to figure out a few things. Less easy than I expected.

There is nothing easy about building a 6DOF . Especially once you start building six of everything. If it was easy everyone would do it...

Looks good to me, although still cant get Elite out of my head lol.

You will be there in no time once you start building everything

Still pushing stuff around. With the incredible seat modelling. At least, it's about the right size.