[chbot] recommendations for inexpensive 2 axis "cnc"

[Andrew Errington]

If an infinite number of Makers were given an infinite shopping cart
at AliExpress, then statistically speaking, one of them would come up
with exactly what you wanted (assuming the results were stored
somewhere in an infinitely big storage system with some sort of
infinitely powerful search facility):

https://create.arduino.cc/projecthub/maguerero/automated-chess-board-50ca0f

On 16/06/2020, Andrew Errington <erringtona at gmail.com> wrote:
> Since this is a one-off I'd suggest acquiring someone else's junked 3D
> printer and scavenging the X-Y platform mechanics.
>
> Or, if that's not cheap enough, buy a US$100 new one:
> https://www.aliexpress.com/item/4000535750845.html
>
> Or, since I always enjoy any opportunity to promote the Cardboard CNC
> by homofaciens:
> https://www.homofaciens.de/technics-machines-cnc-v3-0_en.htm
>
> Or, do you really need full X-Y coverage? If you have one piece P to
> move from point A to point B a magnet on a screw thread driven by a
> single motor might be sufficient, assuming a linear path with no
> obstacles.
>
> Andrew
>
> On 16/06/2020, andrew dean <nzandydean at gmail.com> wrote:
>> I was toying with a puzzle in an upcoming "war bunker" room where i
>> wanted
>> to have some pieces on a "war map" move on their own.  I was thinking of
>> placing below the table an electromagnet on a pair of  motors driving the
>> X/Y axis that would allow me to "grab" an object from a location" and
>> "drag" it mysteriously and magically to another location.
>>
>> Does anybody have any personal recommendations for a
>> motor/frame/controller
>> setup with a documented arduino library of some kind (that also is fairly
>> budget cause i'm cheap) that would allow range of motion roughly
>> 500-600mm
>> square?  accuracy isn't super critical.
>>
>> cheers!
>> -andrew
>>
>