[TriEmbed] What makes a great hobbyist robot?

[Glen Smith]

I would use the brass insert everywhere method - especially if you can
standardize as best you can on the spacing. If I recall correctly this is
potentially going to be a fair distance from an operator, it would not make
me happy to discover an accessory has fallen off or been removed when the
'bot was out of my full observation. Having the inserts also means that the
other two options are possible with an interposing layer: "Attach the
EZ-Mag-Mount (tm) anywhere on the standardized grid of threaded points on
Goodbot for those peripherals that may be removed frequently."

Glen

On Mon, Feb 19, 2024 at 10:00 PM Charles West via TriEmbed <
triembed at triembed.org> wrote:

> Hello all,
>
> I'm elbow deep in the new Mk5 chassis design for the 4 wheel outdoor
> Goodbot robot and was wondering if you guys might be willing to give me
> some feedback.  The "big idea" of the Mk5 chassis is modularity and
> modability.  That's currently being expressed in 2 ways:
> 1. Most all of the sensors and compute can be popped out, fiddled with and
> entirely replaced super easily.  You can also remove the big battery,
> battery holder and motor control PCB just by unscrewing some things and
> disconnecting some wires, making it really easy to access the motors if you
> find it too cramped work with them otherwise.
> 2. I'm putting brass threaded inserts all over the place.  You can mount
> things onto the front, back or sides just by bolting it on with some M4
> bolts.  No modification required, you just bolt it on.
>
> However, I'm a bit stuck with the cap.  There's a number of different ways
> I could mount it:
> 1. Screws in.  Has a bunch (perhaps a grid) of threaded inserts on top so
> that you mount stuff on top easily.
> 2. Friction fit.  Has tabs with rubber on them so that you can just pull
> it on and off with a strong enough sustained tug vertically.  Easier to
> take on/off but your stuff might not be as securely mounted if you put it
> on the lid (sensors probably fine, a mini fridge less so).
> 3. Magnet mount.  Has magnets press fitted into the lid and the robot.
> Least secure option, but easy removal/replacement and it's cool.
>
> Given the way it's constructed, I could see eventually offering all of
> these options (and other custom designed lids/mounting methods.  However,
> what do you think would see the most use?
>
> Also, what do you think of the "brass inserts everywhere so
> modding/mounting is easy" idea?
>
> Thanks,
> Charlie
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