Damn it.. looks like we've got to move again..
The rent and the power bills are getting to be a bit to big for us.
But at the least, it looks like I've managed to sort out a new place to live. More on that later on.
I've gotten my hands on some more IC's, MCU's and some misc other things.
I want to use one of the MCU's (a ATtiny25) to collect temperature data from a thermistor and send it via a RF-link to either a PC or to another MCU to be able to make some graphs and statistics out of it :)
Possibly I'll try to get my fingers on a few other sensors like humidity, wind speed and rainfall sensors to and get it all hocked up.
Wee, my very own weather station here at home :P
I've got the Nokia 3310 LCD thermometer project working (more or less) but I've got some problems with the menu. So it's on ice for now.
The LCD itself is something I'd like to have modular, so I might get around to giving it a set of pin's instead of the direct wiring it's got atm.
I'm still fighting to understand how you do an analog read on the ATtiny25, so it might take some time before the temperature sensor is up and running :(
Anyway, that's it for now.
- Marco
May.06 2010
Yessss!!!!
I managed to find the bug in the thermometer code :P
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
