CNC PRINTER PORT PROTECTOR for STEPPER MOTOR DRIVERS

SPECIAL: for a limited time we are including a $7.99 power supply and quick connect with your order.

HOW MANY OF US CNC HOBBYISTS HAVE RUINED OUR PRINTER PORTS PLAYING WITH CNC. I BURNED OUT TWO, AND ONE WAS ON MY LAPTOP-A REAL DISASTER. YOU SHOULD GET THIS DEVICE BEFORE ANYTHING ELSE IN CNC.

<<<<<VIEW MANY MORE CNC ITEMS BY CLICKING ON "STORE HOME" IN THE BOX TO THE LEFT.

THIS IN LINE PROTECTOR DOUBLE ISOLATES YOUR PRINTER PORT ON THE MOST USED CNC LINES; 1,2,3,4,5,6,7,8,9,14,16, AND 17.  IT IS POWERED BY A FIVE VOLT SOURCE SEPARATE FROM THE 5 VOLTS FROM YOUR PRINTER PORT.  THE FIVE VOLT POWER SOURCE FOR THE PROTECTOR CIRCUIT IS CONVERTED INTO USEABLE  SIGNALS INSTEAD OF USING THE PRINTER PORT 5 VOLT SIGNALS DIRECTLY, THEY JUST BECOME PATTERN SIGNALS THAT ARE TWO STEPS OF ISOLATION AWAY FROM THE NEW OUTPUT SIGNAL THAT GOES TO YOUR STEPPER MOTOR CONTROLLER. IT WORKS WITH STEP AND DIRECTION SIGNALS, AND OR ANY HIGH LOW SIGNAL FROM YOUR PORT.

ANOTHER BIG ADVANTAGE OF THIS CIRCUIT IS THAT THE SIGNALS THAT GO TO YOUR STEPPER MOTOR DRIVER ARE USUALLY A FULL 5 VOLTS (DEPENDING ON YOUR 5 V. POWER SOURCE TO THE PROTECTOR.)  MANY COMPUTERS AND LAPTOPS ONLY PUT OUT ABOUT 3 VOLTS, AND IN SOME CASES NOT ENOUGH TO TRIGGER THE STEP ON YOUR MOTOR DRIVER. THIS IN LINE CIRCUIT ALSO SOLVES THAT PROBLEM.

THERE IS A SINGLE AXIS CIRCUIT LIKE THIS AVAILABLE @ $6.99.  ONE STEP AND ONE DIRECTION SIGNAL LINE IS PROTECTED. ENTER THE STORE LINK ABOVE TO SEE THAT ITEM LISTING IN THE EBAY CNC STORE.

THIS IN LINE DEVICE IS AVAILABLE TO WORK WITH OR WITHOUT THE 5 VOLT POWER SUPPLY.

COMBINED SHIPPING SAVINGS ---HOW TO GET IT---SEE *** BELOW

***  combined shipping here is how to get it.

1. Buy the items in ebay don’t pay yet.
2. go to items “WON” link in ebay
3. find one of your items in the list, and click the drop down menu to the right.
4. find the “request total” item in the menu and click.

That’s all you need to do. DON”T do it on a single item purchase, JUST PAY IT, but if you do it will give us the opportunity to add paypal insurance to your invoice. If you follow the above procedure, please do not send me an additional email requesting a total, that is already done in the procedure.