Pimping the mini-lathe

Thank you for these videos, they are both informative and entertaining to watch! And inspiring!

(Yes I do have my own Mini lathe of the same sort that I'm trying to get to a usable state.)

Thanks. Unless you have really serious space problem, I would recommend selling it and getting a lathe with more mass. Even the 9x lathes are much more substantial.
Mark

Episode 35 is now up...

Mark

Episode36 is now up...

More Maho mayhem.

Enjoy,
Mark

For the MPG Jog wheel encoder, can I take +5V from TB2-12 and the common from TB3-12, or are those not a circuit?

RotarySMP wrote: For the MPG Jog wheel encoder, can I take +5V from TB2-12 and the common from TB3-12, or are those not a circuit?

Check continuity between a common on TB2 to the common on TB3.
I would expect the common to be common.

The TB3 common (Input Common) is floating

If its connected to power common (negative)
the isolated inputs will sense +4 to +24V signals

If the TB3 common is connected to say +5V or +24V
its will sense connections to +5V or +24V common

Thanks for trying guys. I have read PCW's post multiple times, but still can't get my head around it. Sorry for being thick.


So If I pull the 5V power from TB2-12 to power the jog encoder, and then reference the A and B signals to the TB3-12 common like this:
1/ Can I damage the 7i96 like this?


2/ Will simple switches between Common and the other output pins then still work? I have a feeling that if TB3-12 common is a ground, then a passive switch to any of the other inputs wont work, as there is no voltage.


I got really close to finishing all the mechanical stuff today, but the touch screen is not working.




Bummer! I damaged the touch screen ribbon cable at some stage. Looks like at least 9 signals are cut, and they are way too small for me to jumper. Wonder If I can get a repalcement, or have to replace the whole €129 screen.
Mark

For the switches, the switch common should be +5V (or +12/+24V if you have it)
and the input common (TB3.12) = Ground=5V or 12V or 24V common negative

That is, the 7I96 isolated inputs require that a voltage be supplied relative to the
input common to actuate the input.

Thanks PCW. I ran out of time to go in and change that wiring, so this weeks video is not as much done as I hoped...

Mark