[Gta04-owner] GTA04 hardware suggestion and discussions
christoph.mair at gmail.com
Sun Jan 23 00:56:17 CET 2011
Am Samstag, 22. Januar 2011, 23:34:50 schrieb Glenn:
> Here are some hardware suggestion for discussion:
Wow, thats much information. It will take me a while to go through this :)
> 1) Possibility of IR RC5 receiver/transmitter
CIR (Consumer IR) may be emulated using an IrDA transceiver. This works on
many laptops using lirc.
> 2) Possibility of IRDA transceiver
The PCB contains the footprint for an IrDA transceiver. The OMAP3 also
supports this mode on the "Debug"-UART. The transceiver can be enabled using a
We hope it will work through AUX-button, but this is completely untested yet.
You may have to drill holes into the case to finally make it work.
> 3) Possibility of a "video-link"? Use
> touch-screen as a color matrix (2D) barcode video
> transmitter - and the camera as a receiver (half
> or full duplex). Let the link automatically adapt
> to to half duplex, if you need to turn your
> smartphone to establish the other half duplex
> connection. The link should also adapt frame rate
> and if the camera and/or screen is dirty - or the
> link is through a dirty window. I have no idea
> how fast the link can be as a function of
> distance. The link should automatically adapt if
> the video color matrix (2D) barcode is mirrored
> in any way - or "played" backwards.
Wow. What a crazy idea! I like it! :)
Unfortunately it won't work very well. Just try to capture the screen of your
FR with a webcam and increase the distance until you can't read anything. I
guess it will be a few meters, if you have a very good webcam. Connecting your
DSLR with a 200x zoom to the FR could increase the distance ;-)
Similar Idea: Data transmission using vibration. Use the vibrator as sender
and the accelerometer as receiver. It may work with a table as transmission
line. Useful for meeting rooms with WiFi and BT jammers :)
> 4) Antenna diversity of (preferably pattern,
> space - or polarisation diversity):
The main problem with diversity is the available board space. HF antennas and
traces need a certain space on the board and can't be to close to other
components. Unfortunately this won't be possible with the current design as
the board is already too crowded.
Thanks for these! I'll go through them now..
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