May.01 2010
----------
In the last few weeks (month?) I've tinkering with a project including an LCD from a old Nokia 3310, an Teensy 2.0 USB micro-controller, 2 thermal resistors (I believe) and a sorted length of wires (pun intended).
I've been trying to build a thermometer, and it's working more or less as expected.
The hardest part was soldering on the LCD connectors them selves since the size of the connector pads were very small. Also a capacitor between pin 6 and 7.
Soldering up a "jumper pad" and the temperature sensor for inside readings.
Soldering up a control pad for controlling the menu's.
Soldering up the LCD jumper pad to the micro-controller along with the control pad.
This is a holding circuit for the micro-controllers power supply, when the button on the board is held down (for a second or less) the micro-controller boots and sets a output pin to high witch holds the power on-line until "Power Off" is selected in the menus.
I added some hot glue to avoid shorting out other low voltage circuits :S
Testing out the LCD and the current results of my work so far
Link to the rest of the pictures.
I wanted to have a more complete picture set of what the menus look like now, but I did a code booboo and everything went blank on the display for some reason I can't find yet. So I flashed it with a modified older version of the thermometer code until I figure it out.
I've got a few other small projects started to, but it'll take some time until I can get them up and running :)
That's it for now folks :D
- Marco
