[Dprglist] Outdoor rover options - chassis / motor / ESC...

[jesse brockmann]

Carl,
  VESC motor controllers will output distance/revolutions.   I don't have
experience with it but I saw details on it over on the MIT Racecar page.

Jesse

On Sun, May 2, 2021, 11:00 AM Carl Ott via DPRGlist <dprglist at lists.dprg.org>
wrote:

> Anybody have experience with the Axial SCX10 II chassis?
> http://www.axialracing.com/products/axi90104
>
> Seems to be meant for scale / realistic 1/10 vehicles - but looks like it
> could be very well suited as a base for outdoor robot rovers.  It's kind of
> pricey, but - looks well made and durable with lots of metal in the
> construction (hardened steel axles, metal gearing in transmission, aluminum
> suspension elements, steel in parts of the frame), plus it even has a
> high/low gearing option in the transmission - lets you change gears via
> servo..
> Axial also offers lots of cool looking bodies built on that chassis - my
> imagination is running wild with robotic kit-bashing one of these trucks
> http://www.axialracing.com/t/vehicles/scx10?page=1
>
> Also - I've heard about sensored brushless motors and ESC, e.g. from
> Castle Creations (Thanks Jesse B from your recent presentation to DPRG!).
> For example, this "sensored brushless motor and ESC" combo apparently has
> such ability
> https://www.castlecreations.com/en/rock-crawler/copperhead-10-sensored-esc-crawler-edition-w-1406-2280kv-sensored-motor-010-0166-06
>
>
> But it seems like the brushless motor sensors are mostly used at startup
> and low motor speeds. And in that Castle Creations example, it only appears
> to provide RPM measurements after a run - seems you have to download from a
> data logger built into the ESC.  By any chance, has anybody seen (1/10
> sized) options like this, but which can output motor RPM sensor data
> real-time, e.g. via I2C, SPI or UART?
>
> Thanks!
> Carl
>
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