I admit that I’ve been working on this one for a while. Sorry for the lack of updates, but I have been far too busy doing everything last minute and fixing bugs to post here!
I designed this Geiger Counter kit specifically so I could give a workshop at Chaos Communication Camp 2011. I just couldn’t fly halfway around the world only to show up at a hacker conference empty-handed!
My workshops are tentatively scheduled for Thursday and Saturday. I’m not bringing very many kits, so if you’re coming to Camp, sign up early!
More information about the kit is here. I’ll be adding more documentation over the next couple weeks.
The CD101 is an inexpensive (under $40) PID controller sold by Sure Electronics. Aside from the incomplete documentation that is shipped with the unit, I’m pretty happy with this controller. I’m planning to use it to replace the failed PID controller that controls my soldering hotplate.
I am having one small issue with the CD101 – stop mode doesn’t seem to do anything. By that I mean it doesn’t disable the outputs or seem to affect the controller in any way. Based on my interpretation of the user manual, the outputs and alarms should be disabled in stop mode. This is mostly an annoyance in my application – if I want to disable the hotplate I’ll just turn it off. However, I can imagine that the lack of a standby mode might cause problems in some applications.
I contacted Sure Electronics about the problem, and they requested a video. I figured I might as well post it here, since I went through the trouble of making it and everything.
By the way, since it can be hard to find information on this controller (eg. how to change from Fahrenheit to Celsius display), I have been slowly putting together a wiki page for the CD101.