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Bypassing the on/off button on TV question
nickbuol:
Without doing what I did, no strip was smart enough to turn on my TV. It has a momentary switch on it, not a "toggle" switch that could be left in the "ON" position and then controlled by a smart switch.
If I ever want to undo what I did, I can simply snip off the wire where it soldered to the circuit board. No harm, no foul.
CoryBee:
--- Quote from: nickbuol on July 23, 2012, 02:56:41 pm ---Without doing what I did, no strip was smart enough to turn on my TV. It has a momentary switch on it, not a "toggle" switch that could be left in the "ON" position and then controlled by a smart switch.
If I ever want to undo what I did, I can simply snip off the wire where it soldered to the circuit board. No harm, no foul.
--- End quote ---
This :cheers:
PL1:
--- Quote from: Trebeck on July 20, 2012, 02:59:50 pm ---I'll just run cable from the TV to the master switch and all should be well.
--- End quote ---
As long as you use a DPST or DPDT configuration, you'll be fine.
Remember that the dotted line between the two switch levers in the diagram is only mechanical, not electrical.
The TV and computer circuits are mechanically connected, but electrically separate.
It also occurred to me that if you were worried about modifying the board, you could scrape back a little insulation and use micrograbber clips to connect.
Method #2 - Connect the power switch on a remote control using the same method above. Position the remote's transmitter so the TV remote sensor can see it. Advantage - You never have to decase or mod the TV itself. Disadvantage - Changing the remote batteries or misalignments between TV sensor and remote.
Scott
MacGyver:
I think the real thing he (and most of us) are\is looking for is small circuit that uses a 12V/5V molex computer plug, that can be programmed to emit a learned IR sequence out of IR dongle, or\and that controls a small relay that can connect two wires, based on the condition on the 12V/5V lead. eg. 12V in, then wait 2 seconds and send power+video+volume up+volume up+volume up for an RCA. And if it used a rechargeable battery or a large capacitor, it could also execute a "shutdown" sequence when it senses the 12V has gone as well. Like a Smart-Strip mixed with a learning IR remote mixed with a PIC.
I've never seen one here, but I bet Andy knows a source for them. I know I could use one, and so could Trebeck, hell so could most of use.
bob800:
--- Quote from: MacGyver on July 24, 2012, 12:52:10 am ---small circuit that uses a 12V/5V molex computer plug, that can be programmed to emit a learned IR sequence out of IR dongle, or\and that controls a small relay that can connect two wires, based on the condition on the 12V/5V lead.
--- End quote ---
I use a very similar setup on my cab with an "Arduino" microcontroller: http://www.arduino.cc/ Instead of a molex plug, I leave the USB programming cable connected—when the computer turns on, the USB port receives power and thus the arduino turns on, executing my script from the beginning.
The IR scripts can be quite complex to write from scratch, but you can easily find some pre-written for common manufacturers (i.e. Sony, Samsung, etc.).. If you don't care about the "learning" capability, you can just rip out an IR LED from any old remote and solder it to a digital pin and ground on the microcontroller (using the proper resistor, of course).
If you leave the programming cable connected like I did, you can easily send commands from/to the microcontroller using the "Serial" class functions. Once you download the Arduino IDE from the link I posted, have a look at the included code examples. Even if you've never coded before, you'll find it easy enough to cut/paste chunks of code from various examples until you get something working. Use Google!!
I'll be happy to help if anyone has questions\problems with this. Also, if anyone needs a script to turn a Samsung TV on\off, let me know and I can send you my script.