Blog Archives

Nearly any project that has to do with electroncis.  Most projects will be described in a fair amount of technical detail.

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

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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

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

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Robotic Diaper Cake


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

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Constant Current Source


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

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