News and Updates
Changes to the site, updates on my projects, and general happenings.
New blog site...
I've just created a new blog site over at http://www.trash.co.nz Which is where I'll be putting any future updates to my projects...
I'll probably move the content from this site to there eventually as we...
Read more...Posted by hellyc on Sunday, 11-Oct-2009 17:30 PM
URL shortener. lngz.org
Well, it's been a while since I've posted anything on here, due somehwhat to having too many projects, and not ehough time unfortunately.
The process control project is ticking along at a slow pace, with not much to report apart from making the ...
Read more...Posted by hellyc on Friday, 11-Sep-2009 13:51 PM
RRD and another RTU
Well, this must be the week for rapid progress. A second modbus RTU onto my RS485 bus and some historical trending using rrdtool.
That's just about it for building blocks, so now I can focus on refining the higher level software on the RTU...
Read more...Posted by hellyc on Tuesday, 20-Jan-2009 01:18 AM
Sharing Memory
Another few days, and I'm much smarter than I was before. Or at least I'm much smarter about how to use SysV IPC calls from C, and the functions for them from PHP.
Some time can be wasted figuring out the serialization in PHP, before reali...
Read more...Posted by hellyc on Sunday, 18-Jan-2009 00:21 AM
Loads of progress!
Well, where to start...
Since my last update I've updated my RS485 interface to use a 555 timing circuit to control the transmit enable, as per my comments before Christmas (here). T...
Read more...Posted by hellyc on Tuesday, 13-Jan-2009 00:06 AM