Tuesday, April 27, 2010
Just a Test
Don't get to frustrated. It still has a lot of glitches. My team of highly motivated programmers are working on it day and night.
Sunday, April 25, 2010
Nightfall at Dawson Station
Saturday, April 24, 2010
Do try this at home
First, wait till mom is out of the house. Second, don't go more than 3 or 4 seconds. Third, ventilate the house and dispose of the evidence. Or, just watch the video.
Friday, April 23, 2010
Kids and Seniors Alike
Wednesday, April 21, 2010
A Day at the Beach
Saturday, April 17, 2010
YATS
Yet Another Train Show. It was a Divisional Mini-meet for the Pacific Northwest Region of the National Model Railroading Association in Roseburg, Oregon. There were 35 – 40 people in attendance. When people “under 50” were asked to stand, there were only three of us. This is an old man’s hobby.
Saturday, April 10, 2010
Willamette Cascade Model Railroad Club Train Show
One sharp young man started quizzing me about how the electronics worked. I ended up showing him the actual code. Not only could he read and under stand it, but he wanted to make some edits!
Friday, April 9, 2010
Tuesday, April 6, 2010
Disaster and Recovery
In getting ready, there have been some major setbacks. First, I accidentally applied 12V to the 5V bus and literally melted the microcontroller chips. Miraculously, that was the only damage to the Arduino's and I was able to easily switch the chips outs since they were in sockets. The motor shield, however, was not so lucky.
I ended up replacing both the L293 chips with some pin compatible SN754410s I had on hand, and the 74HC595N chip. I had to cut the chip legs with a dremel, desolder them, and then put in sockets so it wont be so hard if I do this again.
In doing some rewiring to avoid a re-occurrence of the chip cookout, I cause a meltdown of a different sort. I accidentally reversed the polarity of the 12V supply to turnout switching circuits. That supplied continuous current to the coils, resulting in failure in short order. I'm lucky I didn't start a fire. It wouldn't be the first sawmill to burn at Dawson Station (two mills burned down at the site before Ralph Hull built the current one).
It is hard to idiot proof something when you are the idiot.