[mythtv-users] MythLED Picture
James Armstrong
james at thearmstrongs.org
Thu Jan 27 12:41:45 EST 2005
I would LOVE to do this... post some instructions on how to make it?
>>>>Here is the location for viewing the MythLED box we made.
>>>>
>>>>http://www.thearmstrongs.org/images/mythled.jpg
>>>>
>>>>It uses a standard serial interface to communicate with the monitoring
>>>>software. The software queries the mythbackend to get the status of
>>>>the tuners, free drive space, guide data, and voicemail. The MythLED
>>>>box can be located anywhere. We are running this one at work and it is
>>>>showing the status of David's Mythbackend at home. The prototype we
>>>>made is capable of showing the status of 5 tuners. It will
>>>>automatically determine how many are configured and show GREEN for
>>>>Idle, RED for Recording, and Off for No Tuner. The System led will
>>>>flash Red if there is something that needs attention like the hard
>>>>drive space is low or the guide data is out of date. The Message led
>>>>will flash Blue if there is a voicemail waiting. There are two Antenna
>>>>leds that will turn Yellow to indicate which antenna is selected. We
>>>>did this because we needed to switch between two antennas for HDTV
>>>>programming. If the mythled software looses communications with the
>>>>backend it will flash all the leds and also sound a piezo buzzer.
>>>>
>>>>
I will clean up the schematics and get something posted. If enough
people want it we can have a few boards made. We had some extra circuits
that we will probably remove. I added a IR transmitter but have not
implemented it yet (probably won't because there are already so many
available). It uses a simple bit shifter and two lines from the serial
port to set the led's. We have bi-directional (bi-color) leds for the
tuners so they can be Green/Idle, Red/Recording and Off/Not Available.
- James
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