Here we go again.

A project log for P2 - Pick and Place for 3D Printers

Pick and place head providing part rotation and top/bottom machine vision in a package lighter than an E3D V6.

Daren SchwenkeDaren Schwenke 04/21/2019 at 21:242 Comments

While I'm waiting for my Jetson to show up, I'm starting with the other stuff.

I've been doing a lot of research into accurate open-loop positioning of BLDC motors.  If there ever was a perfect application for this, part rotation is it.  Basically zero load, and comparatively low speed requirements.

As a first step here, I intend to program a microcontroller to drive a 3 phase motor driver IC like it was a stepper.  Step/dir interface, hard-coded microstepping, sinusoidal drive.

I'm missing a few small value caps right now, but that's about it. 

Working on it.


jlbrian7 wrote 04/22/2019 at 00:32 point

i got my jetson nano on wednesday :)

Still reading up on everything, but i am excited about this board.

I am looking forward to seeing all of the projects that come from this board!

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Daren Schwenke wrote 04/22/2019 at 00:53 point

The Pi 3B+ I used for the last one actually did a decent job, mainly due to the CSI connector. 

This should be completely on another level.  I can't wait to try it.

I was tempted into ordering by the notification system.  When they first got announced, I signed up.  Got notified... ordered less than a minute later, out of stock.  So now I wait, but I got other stuff to do in the meantime.  

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