[Ito-Brazil]

So do you think it´s ok?
Is the board working good?
I just finished the holes of the second one...

[pminmo]

I think it's ok.

[Ito-Brazil]

:banana: Well, So i will start to build a Break out to test on a computer.
The second one will be finished today.
Thanks Phil ! You are the King :cheers:

[pminmo]

Ito,
Your doing the 4 axis correct? If so make sure you get the lateast from my website.

Phil

[Ito-Brazil]

Phill:
Right, i will try the 4rth axis on the first try, maybe i´m crazy...
But I am MAD about my LPT port. On the early days i BURNED 2 parallels on 486 PCs. Now i want to try opto or buffered stuffs.
What do you say about SN74LS541N buffer?

[pminmo]

Ito,
The issue really is how you handle your power and gnd. Yes you could put a buffer in, but it may not help any. If your gnds are incorrectly wired, the buffer can fault and still hurt the pc's ppt. In addition it the input side and control lines are also an issue. If you want to put something in between, look at a true opto isolator such as a 6N138.

Phil

[Ito-Brazil]

Phil:
I have some 4N25 heare. Can i use it as a 6N138 ????

Thanks dude, i´m almost there with the 3rd pcb! Yahooo, iahahaha! IIIIhaaaaa!!!!
lol :banana:

[pminmo]

You can.

Phil

[pminmo]

Just a note, I updated my website trying to make it a little more legible and helpfull. Looking for ideas from the user community to make it better for those who might want to "roll their own" electronics for their cnc project.

http://webpages.charter.net/pminmo/cncelectronics.htm

Phil

[Ferenczyg]

Just a note, I updated my website trying to make it a little more legible and helpfull. Looking for ideas from the user community to make it better for those who might want to "roll their own" electronics for their cnc project.

http://webpages.charter.net/pminmo/cncelectronics.htm

Phil

Phil, there is a bad link at the 5804 Copper 600DPI artwork, it points to a nonexistant 'minimlchannel.bmp' and creates a 'not found' error.

/Fer

[Ito-Brazil]

Phill:
Your site is even better
:cheers:

[mdoan]

Phil, do you have eagle files for the 3977 board? Can you send/post on your site please?

Thanks.

[Ito-Brazil]

:cheers: And what about a opensource joistick schematic?
Anyone to contribute?
I am really liking this kool hobby :banana:

[pminmo]

Ito
http://www.cnczone.com/forums/showthread.php?t=6547

[pminmo]

Thanks Fer,
It's now fixed.

Phil

[pminmo]

Ito,
Have you started the interface board? (BOB) I added a optional connector, that would make it easy to add a joystick interface. Haven't uploaded it yet.

Phil

[Ito-Brazil]

:drowning: Phill:
I´m having problems with the #2 and #3 DISCTRETEs !

I did All the tests, and if IC2=IC8 (see PDF) the test is OK, but the red LED don´t blink and i have 3 FETS on (3 Leds as a motor LIGHTING)

What sould I do?
Oh, by the way, i haven´t started the BOB, but i need one with the OPTO-ISOLATORS...

Thanks Master, I don´t know more what to do...

[Ito-Brazil]

Phil: That last was the #3 Discrete board.
Heare we go with the #2 Discrete errors test:
At the begining (no JP1 pin3 nor pin5 wiring):
errors IC1:
pin1-off ; pin2-on; pin5-on; pin6-off

IC2 as IC8:
pin8-off; pin2-off

IC2 as IC3:
Pin8-on; pin2-on;

IC8:
pin11-off; pin3-off
:drowning: H E L P !!!!!!!

[Ito-Brazil]

My pin5(JP1) track was cracked!
Now I have Boards #1 and #2 working! :banana:

But my #3 Discrete is still with 3Leds (as motor) ON... :drowning:

[Ito-Brazil]

:banana: :cheers:
I fixed all the boards!
I gess i´m getting smart about electronics!

Sorry Phill, i don´t wanna disturb you again with my pcb problems! I will try lil more before ask for help...

Now i´m waiting for the upgrade on your website, to have the coper of the opto-BOB or the 4axis-bob-joistick.