Monday, December 8, 2014

I made a box

We needed an oddly sized aquarium for calibrating some sensors, so I made one out of solvent welded 1/2" acrylic.  Getting everything sized exactly right, with good surface finish for bonding was a challenge, but overall it was a fun weekend project, and came out well.

Friday, October 3, 2014

squirrel launcher prototype

I figured a good option for my pneumatic cylinders might be a bit of garden protection, particularly with the cooler weather coming up, when the squirrels are going to be digging away.  A little help from an arduino and an inexpensive pressure sensor, and I've got a pretty decent proof of concept!

test video!

Saturday, September 20, 2014

Some of you may have seen that Chinese amazon/eBay competitor Ali Baba had its IPO this week. Coincidentally, I decided about a month ago to see how good their hardware deals really were. About a month and $30 (including shipping) later, I have 3 of these little pneumatic cylinders and solenoid valves. They seem to work great, and one cylinder alone would have cost me more than $30 at any other vendor I know of. Anyway, the "get cool parts cheap" thing worked out awesome. Any suggestions on what I should DO with these little guys? Once I get the right hose barbs, they should be pretty powerful little actuators...