daniel_reetz wrote:With that in mind, I spent the morning evaluating DIY Hall Effect homing switches. In particular, I copied the electronic design in this post. Unfortunately I burned up the single hall effect sensor I had laying around (an Allegro 02E). Instead of wasting more time on this, I simply ordered these nice, prebuilt sensors from DigiKey. Sadly, with DigiKey the shipping costs almost as much as the parts themselves. I expect them to arrive mid-week.
I will be able to install those sensors on X and Y axes, and use a touch plate for the Z axis. With that kind of setup, the machine will be able to be set up with fixtures drilled into the bed, so I can easily position plywood in a repeatable fashion.
Well if you want to keep the baltic birch finish on both side you can go with this... but you will have to cut three pieces for each arm .
Here's the autocad:
I hope this give you some idea....
Thanks for the great works
daniel_reetz wrote:Wow, so roughly 47% of the wood ends up as waste in the current sheet model. Given how sloppy I was with the coloring, that could be +/-5%, but it's still substantial waste. Fine for one-offs, I think, but maybe not as fine for when I go into production mode.
Fab52 wrote:Hi jck,
Hey, this is the best solution I've seen so far. Congratulation
This should'nt be hard to do with your CNC Daniel and Rob ???
Amazing we can even keep the two bearings design...
Here's from my cad:
I don't think there is a need to keep the original two bearings design if we are able to put the one bearing design in the center of the arm thickness.
Again great design, I hope the master mind behind this book scanner will like it.....
Keep the good work
You know you're old when everything you know is absolete... So keep learning if you want to stay young !!!
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