Dave's Tech Blog

Years ago, probably about 1995 or thereabout, I hosted a 100lb Silly Putty group buy. I wrote a little web page using JSP, Perl, and Firebir...

I'm building a new overhead console for the '93 B250 conversion van I've recently acquired: After driving it around a while...

I've added a low-speed centrifuge to my lab equipment. It is a Chinese-made device sold on Amazon by Hardware Factory Store . It works w...

Since I'm trying to use a PID controller to keep the chamber temperatures under control I need to tune the PID parameters. And since thi...

The code I've been using to run the temperature controller for the crystal chamber so far has been pretty bare, just the core PID loop. ...

I cobbled together a simple temp controller to try to get a feel for what it'll take to make one that will work for my temp controlled c...

For my crystal-growing I'd like to have better control over temperature so that I can cool solutions very slowly. I've been using a ...