I posted an inquiry a few weeks ago about doing an arduino controlled power feed/partial CNC control for my X2 mill. I have made some pretty good progress on it since. Parts I ended up using were: 400 oz in stepper - $34 shipped 48v 7.5A power supply - $32.50 SMAKN TB6600 Driver - $15.50 Arduino Mega 2560 - $9.99 10 momentary on buttons - $8.42 3.5" TFT touch screen - Free 5 toggle switches - $11.99 Project box - $7.81 Some O1 tool steel, a little aluminum - $5 ish Total - $120 This leaves the option open to use most of the hardware for a CNC conversion. For another $49, I could add the Y axis and have a 2 axis CNC. If I were to simplify and have the same basic capabilities as available options, most of the controlling cost can be eliminated and the cost could be under $100. The touch screen and the arduino allow for a lot more control than just a speed setting and on and off switch. The capabilities I will be programming into it are: -Programmed cuts which will feed the x axis a certain distance -Feed calculator -Basic cnc functions like facing -Automatic positioning A few things I have considered but haven't planned out the programming for include: -Digital pantograph -Basic 1 axis CNC programming (It makes x cut, tells me where to position y, makes another cut, etc) -Blueprint on screen Right now my control box has 8 buttons, 4 switches, and the touch screen. The 8 buttons will allow for 1 touch position adjustment, jogging, and cutting, and have a start and cancel/reset button. The screen will let me switch between holding the button to cut and pressing the button to start the cut and pressing again to stop. I won't implement that part until I add limit switches though. For now, it will use soft limits when making programmed cuts. The 4 switches control power to the arduino, power the driver, power to the stepper, and power to the spindle light. I have plenty of room left on the controller to Z or Y control, a power draw bar, and to move the current controls over. I might add a tachometer read out but I don't think 1 arduino can handle processing everything so that may need a second arduino for that. I can likely build that for under $20. The driver is going to me mounted on the outside on the back because the box wasn't big enough to put the arduino and the driver in. Depending on how hot it gets, I may mount a fan on the box and or the driver. I can pull 12v from the fan in the spindle power box that is also powering the spindle light. To mount it I just took a piece of .5" aluminum because thats what I had, drilled holes for the stepper then milled slots to mount it to the end of the table and allow for some vertical adjustment. Then I chucked a piece of O1 tool steel in the lathe, drilled a .250" hole all the way through which fit the stepper shaft perfectly, then bored half of it to fit the end of my lead screw. Then on the mill, I drilled and tapped 2 10x32 holes for set screws on the stepper side and drilled a .250" hole on the lead screw side. Then I turned another piece of O1 to be a tight fit with the end of the lead screw (about .175") with a slightly tapered .250" head to fit snugly with the coupler. Here is a picture of the stepper mounted to the table: Here is the coupler after being drilled http://i.imgur.com/WT1y3Qf.jpg?1 This is the controller box as it stands now. The covered switch just controls the spindle light but it was inexpensive and I thought it looked cool so I got it. Speaking of the spindle light, I got 2 of them for $8. They are Halo lights for a car but they are very bright and use 12v which makes them easy. Its just going to be glued to the head around the spindle. Its hard to tell how great the light is in this picture because the garage door was open and the sun was shining bright but when the door is closed, the light just lights up the table. I tried to record a video of the screen and its functionality with a few selections and showing how the menu and home screens work but every time I started recording, the screen went haywire. As soon as I reset it and stopped using the camera it worked again but then when I turned it on again to start recording, the first touch and it loses it. I uploaded the video anyway. Once I get all the programming done, I will make the screen a little more readable and better looking. Here is the motor running. The only issues I need to work out with it are a bit of binding towards the ends of travel and the stopping and starting keeps knocking the handle loose. Tips, suggestions, questions, ideas, and banter are always appreciated.