mike wrote:
> Okay....I'll assume that since no-one has commented on
> this proposal ...
Mike, I did some closer examination of maps for the GPS
application, then got a bit sidetracked with some new
sensor interaces (I tend to do a lot of multitasking
working on various parts on my wearable). I received
lots of feedback on GPS from different people, so I need
to take some time to look closer at all the information.
In the meantime I added new microcontroller circuitry,
and I'm now a walking weather station! I have sensors
for humidity and barometer, a network of DS1820 temp
sensors, and a dozen 12-bit A/D converters for other
sensor connections. I have all of the following devices
connected to a single RS232 serial port on the wearable:
- BX24 Microcontroller (RS232 connection to CPU)
- Motorola GPS Receiver (TTL serial connection to BX24)
- Position, Altitude, Velocity, Bearing, Time
- Infrared Decoder (TTL serial connection to BX24)
- Receives commands from crediar card IR remote
- Text/Graphics LCD (RS232 connection to BX24)
- 4x20 Line Text Display
- 120x32 pixel graphics (for plotting graphs)
- PIC Microcontrollers (TTL serial connection to BX24)
- Ten Segment LED Bar Graph Display
- Level and Activity Indicators
- Motorola Pressure Sensor (Barometric Pressure)
- Uses LTC1298 Dual 12-bit A/D Converter IC
- Phillips Capacitive Humidity Sensor
- Uses 555 Timer and Quad Multiplexor
- Bank of Twelve A/D Converters (12-bit)
- Uses TCL2543 A/D converter IC
- Filter capacitors and resistors installed
- Terminated with screw terminal bank for sensors
- DS1820 Temperature Network (1-Wire MicroLAN)
- Body Temperature (via wrist strap)
- Ambient Air Temperature
- CPU Heat Sink Temperature
- CPU Enclosure Temperature
- Hard Drive Temperature
- Power Regulator Temperature
- Battery Temperature
Now I have lots of data to time/location stamp via the
GPS receiver. I'm starting to look at the APRS protocol
in detail, along with feedback from everyone else to
figure out where to start with the GPS applications.
Will continue that discussion after I've had some time
to think more on the GPS protocol ideas.
-- Doug
------------------------------------------------------------
Grow your own Wearables: http://wearables.los-gatos.net
What I'd like is to have you call me and my jacket answers
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