$289 G540 http://kelinginc.net/GeckorDriver.html
$147 3 $49 KL23H2100-35-4B 381 oz motors for X, Y & Z
$060 One KL-350-48 48V/7.3A power supply.
$010 Estop switch
$007 3 Home switches
$009 Straight thru parallel computer cable.
-----
$522 Total electronics cost.
 
$149 Mach3 cost with above purchase.
 
$671 To spend at Keling. http://kelinginc.net/
 
This most likely will be the best electronics for your router.
 
Start by reading this:
 
http://crevicereamer.com/Page_2.html

 
You may also need some other stuff:
 
You can use THIS wire for motor cables and home/limit switches. Ground the drain wire ONLY at the driver end. (Pins 3,4,5 for motors, PSU Ground for homes/limits)
 
http://cgi.ebay.com/Stepper-Motor-Wire-by-the-foot-2-individ-shielded-CNC_W0QQitemZ300324182374QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item45ecb75966
 
 It also comes in 100 ft roll.
 
BELDEN 8723-100 STEPPER MOTOR CABLE WIRE
 
$32 http://www.fullcompass.com/product/305455.html 3 WK SHP
 
$33? http://www.jameco.com/Jameco/catalogs/c273/P101.pdf
 
$38 http://www.mcmelectronics.com/product/BELDEN-8723-060100-/36F1033WA
 
$39 http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=734180
 
$40 http://www.markertek.com/Product.asp?cat=CABLESCONN&subcat=BULKCABLE&prodclass=AUDIOBULK&baseitem=BL%2D8723%2D100&search=0&off=0&showreturn=0&utm_source=&utm_medium=&utm_term=&utm_content=&utm_campaign=
 
$44 http://www.alliedelec.com/Search/ProductDetail.aspx?SKU=2161456&MPN=8723+060100&R=2161456&SEARCH=2161456&DESC=8723+060100
 
EUROPE http://www.cable-world.co.uk/online.htm
 
 
You won't need any db9 motor connectors with the G540, as they come WITH it. The G540 also has circuitry for simple spindle speed control and outputs for dc relays to turn coolant pump (Or router motor) on or off.
 
These inexpensive relays are very good for starting and stopping spindle motor, cooling pump, vacuum etc.:
 
https://www.surpluscenter.com/item.asp?UID=2009102610515283&item=11-3167&catname=electric
 
You will need one of THESE 1/4 Watt 3.48K resistors for each 381 or 387:
 
3.48KXBK-ND
 
They only come in a pack of five, so about $1 for 10. With shipping it's about $3.50
 
http://digikey.com/
 
Or, in Canada:
 
http://digikey.ca/
 
You will also need an estop switch, Home/limit switches and a 6 foot "straight thru parallel port cable. These are all available from Keling:
 
http://kelinginc.net/CNCPackage.html
 
The G540 is so small that many are mounting theirs INSIDE the computer case.
 
Camtronics has a case MADE for the G540:
 
http://s120220635.onlinehome.us/stepper-components.asp
 
CR.