JP1 Remotes

https://i.imgur.com/z1Gb1zK.jpg

pinout:
1,5 N/C
2 = RTS
3 = GND
4 = TXD
6 = RXD

Do not connect VCC because the cable will probably output 5 Volts for your 3 volt remote.
The remote must have batteries installed.
If it doesn't work, it's possible that you have TXD and RXD reversed. I have seen ...

Well Rob,

If the site goes down & I don't get a chance, I want to say thank you a million times for all of your hard work over the years. You are always willing to help others. There aren't may guys like you around these days.

I wish you all the best from Canada!
Chris

If you get a cable, you can learn all the commands with your learning remote then read & upload the image here.

Someone may be able to help you.

I have a media player using NEC1 dev 0, subdevice 255.

I also have a Samsung tv remote device 7, sub device 7.

Sometimes the Samsung remote powers on the media player, no matter what key is pressed.

Strange. I have never figured this out. I just assumed bad firmware in the media player for the IR ...

This is true, and there's an easy fix (assuming you don't have discrete power codes). If things do get out of sync, press SETUP then POWER to execute the raw POWER button.
Great advice Rob, good to know.
So what is happening when you do this? Is the power command that is programmed in the power ...

Your in-laws will be confused and frustrated if pressing power turns the Denon on and the Vistron off. Then pressing it again turns the Denon off and the Vistron on.
I just went through this with my 89 year old dad. Very challenging to say the least.
I used two power buttons, one for the TV and ...

Why don't you try capturing the commands using IRScrutinizer? It will eliminate the guessing game on exactly which protocol you are dealing with.

You will need to buy an IRCapture Device or IRWidget if you don't already have one.

I am not able to look at the amazon link you posted. Some things you can try, don't connect power from the cable to the remote, use the remote batteries. Did you try reversing Rxd and TxD?

I would try testing the cable on another device (not a remote) to see if it works. The other day I opened a ...

since you have the original remote why don't you try to capture the original signal using a decoder with irscrutinizer?

I hope the worst is over for you.
All the best!

sometimes the chinese cables have Rxd and Txd reversed. try reversing the wires in the connector. With good batteries in the remote, it should work.

troubleshoot the cable.

Don't connect the cable to the remote.
Join RX and TX together. (Use a temporary wire jumper in the connector.)

type something in realterm or whatever terminal program you prefer.
If what you are typing appears on the screen your cable is working.

I found some of these ...

It looks like the cable doesn't supply power to the remote.
The remote will need to have batteries installed.

Check your wiring on the connector.
TX and RX wires may be reversed on some cables.

Looking at the picture you uploaded the pinout should be like this:

I would watch out when buying these cables from China. I just got stuck with some PL2303HXA that were fakes, even though the listing says FT232!!
So I thought I was buying FT232 cables when the fakes were shipped to me.
They are not supported in windows unless you use a very old driver and go ...

I also may brute force all the OBCs
just out of curiousity how do you accomplish this?
I only had to do this once. I used an Arduino IR transmitter I built
with one button, every time the button was pressed the command was incremented and sent.
Just wondering if there was an easier way to do this ...