Dremel
The USB Lipo charger board had to undergo some Dremel work to make it fit.
Box
An attempt to squeeze the hardware into a Rasberry Pie box has begun. So far it looks like it will fit.
Solar panels
My 14 years old solar panel finally gave up. I have now mounted two new 40 watts panels which I will connect so they can be directed to any of two battery banks.
Retro
I was looking for something to mount switches on and found one of the old constructions I made 5 years ago, it still works with the original batteries.
Some more parameters
I added some more parameters, now it is 14 in total.
I belive I will learn to make a quick check on the stables and see if something seems wrong.
I belive I will learn to make a quick check on the stables and see if something seems wrong.
The webserver
Perhaps I need to learn a bit more about the webserver but I still think the whole concept is working quit well.
Flyport
I started to play with a Flyport, it seems like I will be able to do quit a lot with not to much effort.
keybord
The truly minimalistic keyboard is now in place. It is not so hard to figure out wich button to press.
Zigbee
I hooked up the Zigbee module and got it running fairly easy. I am using the receiving port of the same serial port that runs the display. Of course the speed was wrong and I got some unrecognized characters at the beginning.
Now I will probably go for the mechanical assembly with a little help from some epoxi glue.
Now I will probably go for the mechanical assembly with a little help from some epoxi glue.
Some Dremel work
I have given up the pervasive displays for some time and is moving towards a minimalistic design with a small oled I used before.
The interface is very simple with only 3 wires.
The interface is very simple with only 3 wires.
SPI
Utkast: Apr. 18, 2013
Some semi serious problem
I connected all the signals between the Stellaris board and the display.
I could not detect the clock on the SPI interface.
It turned out the the signal was there when not connected to the display.
So now I have some fault finding to do.
E ink
I got hold of yet one more display.
This one has about half as many signals to interface and also has a character generator. I will start with this one alphanumeric and later turn to the bigger one for graphical information.
This one has about half as many signals to interface and also has a character generator. I will start with this one alphanumeric and later turn to the bigger one for graphical information.
Look at that nice clock
The clock was easier to fix than I thought.
The grounding probe had slipped from the logic analyzer and when I put it back everything was ok.
The grounding probe had slipped from the logic analyzer and when I put it back everything was ok.
Some problems
This picture shows that I have switched in and output of the SPI and that I have ringings on the clock line.
The switch will be easy and the ringings a little harder to fix.
The switch will be easy and the ringings a little harder to fix.
12 Connections
Soldering
Some serious soldering has started.
It seems like I have 11 signals to take care of.
It seems like I have 11 signals to take care of.
Launchpad ports
I did a "normal" missunderstanding of the ROM port routines but now most of the pins seems ok. Perhaps I will start soldering next week.
The logic analyzer
The Pervasive display needs quite a lot of signals so I had to dust off my old logic analyzer from 1994.
And it seems to still perform well, I only had to fetch the mains cord from the kitchen since it has been used for a rice cooker the last years.
And it seems to still perform well, I only had to fetch the mains cord from the kitchen since it has been used for a rice cooker the last years.
