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« Video Converters | Home | StackBook Part 5 - Po… »

StackBook Update

31 08 09 - 21:05 Alright, a quick update on where the StackBook is at.

The Screen:
Have cut up the tracks on a small piece of protoboard that I still need to cut down to the right size. This will adapt the screen to two 10-pin headers (power/control lines, data lines). Need to also add the two more headers to the main board.

The main board:
Add (a socket for a) crystal oscillator already!

The Ethernet module:
I have the 3.3v regulator and I've taken another look at the pinout. I need some pin headers here to socket this thing in - I don't want to solder it down. Jaycar doesn't have them, apparently Aztronics do, but I have to get out there some time.

The Keyboard:
Spent 15 minutes searching the web, then found that my usual supplier of stuff from Hong Kong has this, so I ordered it. Should be OK once I remove the case - by the dimensions looks fullsize, but I can of course make the laptop shorter. Don't want to make it too small though - and i should leave enough room to fit some interesting stuff in. Just wish I could make it a little smaller as the screen is not huge. Oh well, guess I'll have to figure something.

The case
Probably perspex. Need to find some laptop screen hinges somewhere.

Power:
Hmmm. At the moment, it's using USB power through a 10-pin ISP socket. Should add a DC jack with a LM7805LD (I've got one somewhere here...), and feed 6v into it. Need to at some point get a 5v boost converter and make this thing run off 18650s... and work out charging etc. One of the A-D pins (spare from the LCD) can be connected to the raw battery input to get the voltage (which since it is lower than Vin is fine) for battery metering.

Sockets:
Probably 10-pin ISP headers (for both chips), power, a serial port, ethernet, and maybe a "misc port" with some wires / I2C bus on it. First person to suggest IEC bus gets something thrown at them :)

Other stuff
Needs a stupidly loud buzzer. Or rather, doesn't. Though it will be getting more LEDs - and I probably should move the blue power one when I have a keyboard.
Also, soft poweron... I wonder how low power I can make the AVR...
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