Archive for January, 2018

Dissapointing

Posted in Buyer beware! on January 29, 2018 by asteriondaedalus

Have poor eyes nowadaze.  So I have a few gadgets to help out.  I have a large plastic fresnel lens, a jeweler’s monocle, a hands free mag glass with light, namely:

Most have limitations and I am happy enough that they work within those limitations.

Still, I was looking forward to my USB Microscope.  Only $20 etc. so not expecting much but frack me!

The one that turned up seemed fine.  However, I was dazzled somewhat by the brightness of the LED.  There is an adjustment but, via the viewport, you have pitch black or you flood the viewing field.

The software that comes with it installs BUT the purposed software for the microscope (that includes allowing changing of resolution) installs but does not run on Windoze.  There is a second piece of software (AmCap) that I suspect is a open source program.  It runs fine but does not offer any more functionality than the camera app that comes with Windows 10.  Turns out good old MyCam works a treat with the resolution setting so you don’t need to install anything from the vendor disk.

Functions okay.  Lighting problem disappointing.  I am only using it for fine PCB work anyway so likely not a problem, and it was only $20.

View flooded by bright LED array supplied inbuilt

Using a warm, slimline, LED desk lamp

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I need some discipline

Posted in Uncategorized on January 23, 2018 by asteriondaedalus

While poking around on the Net I found fuzzyclips (again). It is old so needed Borland C to compile. Luckily I had a linux gadget up and running. So with a little work to find buile dependencies I got it running on the C.H.I.P!

So yes, I have gone back to play with Jess and FuzzyJ.

POSTSCRIPT

Got fuzzyClips compiled on windoze!  Can’t get the IDE working but the console is fine.

Actually found a plugin for Atom anyway.

Gag! Need a 12volt BEC as well

Posted in Home Made Lidar on January 18, 2018 by asteriondaedalus

So, for the final prototype I will likely need a 12volt BEC to drive the gimbal board – though I won’t need that for the bench.  What I am missing is an adjustable bench supply.  Still something that should have on my bench.  So, off to Jaycar on weekend.

Otherwise, here are the basic innards of the home made lidar.  The bore on the gimbal is not wide enough for the slip ring body, but that is not a problem – it will be accommodated by the way I mount the slip ring.

20180118_180855

As for the Benewake TFmini Micro Lidar, I think I might play with a 3D print for the final prototype.  My geek sister has a 3D printer and I am most of the way through an online Blender course (specifically so I can fall into 3D printing design).  Otherwise, a short piece of aluminum angle should do.

20180118_183933

Just for posterity the physical specs for the gimbal motor are:

Spec:
Poles: 12N14P
Resistance: 10.0 omh
Weight: 41.42g
Wire: 0.19mm
Turn: 100T
Bottom holes center to center: 16mm and 19mm
Top holes center to center: 16mm (vendor website says 12mm in on place and 16mm in another).

1389280705

Physical specs for the lidar are:

lidar

HALP!

Posted in Home Made Lidar, The after market on January 3, 2018 by asteriondaedalus

So, mislaid the cable from my Benewake TFmini Micro Lidar.   What on earth is this socket type please?  Anyone?

POSTSCRIPT

I pinged 3XDR, from where I got the gadget, for a hint as to the connector type. He is kindly sending me one!  Otherwise, it’s a JST-GH 4-pin.  Used in pixhawk.

POST-POSTSCRIPT

All good.  New cable on hand. I have the gimbal board too, and a 4 core slip ring, so just waiting on the gimbal motor (with the large bore).  To give a keyed position I have a line sensor so I will add a reflective line to the gimbal motor spindel.