Blog Archives

A3982 Stepper Driver

A3982PCBA 1024

When building a CNC mill, a quick and inexpensive method of driving the steppers was required.  Several different stepper driver boards are available, but all seem to be in the range of at least $10-$15 per board, although they have

Tagged with: ,
Posted in Electronics

CNC Controller Board (revB)

cncControllerB PCBA4

Our CNC Controller has been build up and testing has commenced!  This revision has several improvements over revA (which was never fabricated).  Here’s a quick feature-set: integrated stepper drivers current selection via inexpensive single turn pots automatic idle current cutback

Posted in Electronics

DIY Delrin ACME Leadscrew Nuts

DIY DELRIN ACME NUT and TAP

  A discussion on what leadscrew nut options are available to the DIY CNC builder and a short how-to on a very low cost option (making your own ACME tap and (nearly) backlash free leadscrew-nuts).

Tagged with:
Posted in Prototyping and Fabrication

CNC Controller Board

stepperDriveRenderIso5 withSpot

As noted in the second portion of how NOT to build a CNC mill we reference the need for a new controller board.  This board is designed to interface with EMC2 over a parallel port.   Desired Features integrated stepper

Tagged with: ,
Posted in Electronics

How NOT to make a CNC Mill (part 2)

zAxisOnTable

  In the previous post (how not to make a CNC Mill Part 1) we covered the mechanical beginnings of our humble CNC.  This post, we go into a bit more detail on the exact problems encountered and the solutions.

Tagged with: ,
Posted in CNC

How NOT to make a CNC Mill (part 1)

PCBMill

Computer Numeric Controlled Mills (CNC for short) are great tools to have around.  Wouldn’t it be great if we could make one from “scrap” parts?! This series was originally intended to be a tutorial on how to make a CNC

Tagged with: , ,
Posted in CNC

Copper Electroplating part 4 (plating the PCB)

testPCB grid PTH closeup

The fourth installment in our PCB through hole plating series – plating the PCB to get plated through holes.

Tagged with: , , , , , , ,
Posted in Prototyping and Fabrication

Copper Electroplating part 3 (Activating ThroughHoleWalls)

testPCB curedTH grideCloseup

Before dunking a PCB into the copper plating solution – through-hole walls need to be “activated”. This is a fairly simple process that we’ll detail below.

Tagged with: , , , , , , ,
Posted in Prototyping and Fabrication

Robotic Diaper Cake

diaperCakeOverviewLights2

Our friends over at J&A Photography came to us with an interesting proposition – a robotic diaper cake. . .we were all ears! The concept was an “over the top” diaper cake that had fish rotating around it. Later there

Tagged with: , , , , , , , , , , , ,
Posted in Electronics

Constant Current Source

constCurrentCCA

Having the capability to source or sink current can be a really useful when dealing with several aspects of electronics – from easily driving LED’s to putting a load on a power supply or driver. We’ll cover exactly why you

Tagged with: ,
Posted in Electronics