Cheap Spindles & Power Fluctuations

While building my CNC mini-mill, I purchased a 500W air-cooled spindle from eBay.  It came with a power supply, which looked great and I (falsely) assumed it would work perfectly on my home-built mill.

Boy was I wrong!  The mill worked great as long as the spindle was turned off.  Whenever the spindle was on, there was a chance that the mill’s microcontroller would reset (bad), lock up (worse), or would suddenly enter an infinite loop (really really bad!) and an axis motor would begin moving in some direction until I noticed and stopped it.

After much work identifying and rectifying the causes, the power supply has finally been tamed.  Here’s a guide for anyone having the same issues.

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Guided Telescope Mount & Accessories (Tracker V3) #DIY

Astrophotography is a bit of a money pit.  I recently delved into it with my 80-200 f/2.8L and a home-built tracking mount.  It was so much fun that I decided to buy a telescope!  So my entire budget went into an 80mm APO.

The problem was that a telescope alone is useless for star pics – some quality infrastructure is needed.  This post is about my attempt to affordably build the following components:

  • High-precision Tracking Mount with an ASCOM-compliant driver
  • Guide camera and scope to help the tracking
  • Portable Power supply
  • Telescope Focusing motor with an ASCOM-compliant driver

Read moreGuided Telescope Mount & Accessories (Tracker V3) #DIY

Auto-Dolly (IREnE) – Tech Details

PREAMBLE:

Camera sliders are fun tools to use for making dynamic timelapse videos, and they come with some cool features.  This is a clever little gadget that moves like a camera slider but folds much smaller.  Eggtimers are also commonly used to make a similar effect.  Some high-end gear can slide and rotate the camera at the same time for a particularly cool effect.  But how do you guild one that one that could go up to 11?

Spinal_Tap_-_Up_to_Eleven
This one goes up to 11

Read moreAuto-Dolly (IREnE) – Tech Details