[mythtv-users] HD-PVR power cycling

Mark Lord mythtv at rtr.ca
Mon Apr 25 19:21:02 UTC 2011

On 11-04-25 03:18 PM, Mark Lord wrote:
> On 11-04-25 01:28 PM, Gavin Hurlbut wrote:
>> I'm considering producing a nice little USB dongle to power on/off the HD-PVR in
>> the times that it decides to misbehave for whatever reason. 
> I use the Sparkfun FTDI breakout boards for stuff like this around here.
> They basically are a simple way to get up to 12 GPIO lines at the end of
> a serial cable, with fairly easy programming under Linux.

Err.. that should have said "at the end of a USB cable". :)


> I've got one of them controlling the antenna switching matrix,
> another controlling three relays that switch things on/off as needed,
> one acting as a universal IR receiver for use with LIRC,
> another running a 2x20 LCD text display, etc..
> Handy little suckers.  $15 + shipping, but to fire a relay you'll have
> to add the relay, a transistor, diode, and capacitor.
> Or alternatively just couple a single ULN2003A chip to it
> and use that as a solid-state relay for up to 3 amps DC.
> Lots of ways to do this.

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