Saturday, April 30, 2016

Congrats, India! Launch of PSLV-C33/IRNSS-1G

It's not getting a lot of press here in the US, but India has a pretty awesome space program.  They just finished orbiting their 7th navigation satellite.  This gives them a completely home-grown alternative to GPS.

Here's the launch of  PSLV-C33/IRNSS-1G.

I'm curious about these sheets that appear to fly off just after liftoff.

My country learned a very painful lesson about the cost of falling ice and foam during launch.

Wednesday, April 6, 2016

3D Printed case for my DSO 138 Oscilloscope.

Last night I printed a case for my Oscilloscope.  It looks much less bomb-maker-ish now. ;D

This is a design from Thingiverse:

To finish it, now I need to print up a label/decal sheet for it and scratch up a 9v power supply.

Saturday, April 2, 2016

Replacement tips for a Radio Shack 64-2184 or 6402184 20/40 Watt Soldering Station

I have a Radio Shack 20/40 Watt Soldering Station.  It was a gift from my friend Michelle when I fixed her TV many years ago.  Thanks Michelle!

Normally I'd post a picture here, but I won't this time.  I'm ashamed of my soldering iron.  The tip looks like the mangled claw of some battle-wearied dragon.  I've filed it down so much that only a nubbin remains.  I've been meaning to buy one, but the stores don't carry it and their website doesn't list them anymore.

After some digging, I found that the Weller PL100 series tips will fit this iron.

(Image Credit: Weller Catalog, 2015, Page 65)

They even have the fine point one I want, a Weller PL138:

(Amazon Associate Link:

Even better, I found a pack of 4 assorted tips including the PL138 on eBay for $22, shipped!

I also read that the tips from an Eclipse Tools 900-035 soldering station will work too.


(I'm sorry if this seems like I'm shilling for Weller.  I'm not.  Not being able to find tips for this sucks, and I really hope that search engines will crawl this page so I can find it easily in a decade when I need to buy some more.)