RE: [tracker2] Prototype rev B changes
- On Mon, 12 Jun 2006 scott@... wrote:
> Here's the deal with the pin header - I need about 14 pins for expansionA few thoughts: For the 14-pin header, you can talk to the LCD in
> anyway, and it's mostly generic I/O and power/ground, so I'm using the
> layout of the typical HD44780 LCD header and adding a space for a contrast
> adjust resistor. The second serial interface is on the header mostly so you
> can plug in a GPS module there.
> The I2C port is also on the pin header, so that could be used for expansion
> of some sort.
8-bit mode or 4-bit mode. If one were to use 4-bit mode, could you
still use the second serial port for the GPS?
If not, might you consider using the 1-pin circuit for talking to an
LCD using a Dallas one-wire part so that we _could_ hook both an LCD
and a GPS to that port? One of their app-notes describes this,
you've probably seen it.
Perhaps also a couple of switches and a rotary encoder, you get the
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