JP1 Remotes

Gauchero · Joined: 22 Mar 2018 Posts: 2

Update: the green channel (TXD) was not soldered correctly. After resoldering, the cable works very well. Thanks for your help anyway!

bevhoward · Joined: 24 Jun 2005 Posts: 245

Was interested in this topic since I purchased an FTDI232 USB-JP1 cable a year or so ago, and could not get it to work on a win8.1 computer.

I confirmed the wiring (as documented in this thread) both by checking the color codes as well as opening the cable and confirming the CB pinouts.

As part of the process, I downloaded and installed a couple of drivers, but had no success with that either.

I then purchased a second cable based on a forum recommendation and that one worked out of the box.

Returning to JP1 fun and games this week, I pulled both cables out and confirmed that only the second cable worked.

Then, a couple of days ago, I moved back to my office which has a win10 computer and tried both cables on that computer. I was surprised that both cables worked with the default win10 drivers.

Obviously this points to a driver problem in Win8.1

Hope that this information is useful,
Beverly Howard

(why win8.1? because win10 does not support Windows Media Center)

mdavej · Expert Joined: 08 Oct 2003 Posts: 4006

That's an interesting discovery.

Try this driver and see if it makes any difference. Maybe the 32-bit driver works better, even on a 64-bit system?

https://www.ftdichip.com/Drivers/VCP.htm

bevhoward · Joined: 24 Jun 2005 Posts: 245

Thanks... driver downloaded, but it may be a few days before I get back to the win8.1 machine. Will report back.

Beverly Howard

siebert · Joined: 04 Nov 2010 Posts: 4

I did order the FTDI cable via the eBay link from the opening post, but I never received it within two months, so I got a refund.

So I found and ordered this cable instead on Amazon, which is almost twice as expesive (10€), but was delivered the next day and I'm happy to report that it works fine with my URC-7980 remote (using Windows 10):

https://www.amazon.de/gp/product/B07BBPX8B8

davecs · Joined: 28 Mar 2005 Posts: 82

speedydgon · Joined: 13 Sep 2004 Posts: 6

Using the links on the first post, I purchased a JP1.2/1.3 cable (the one with 6 separate single connectors) and the JP1.2/1.3 to JP1 adpater.

I have them both now but am stuck again. I think I wire the cable to the adapter using this pinout:

1 - (empty):VDD
2 - Yellow:RTS
3 - Black:GND
4 - Green:TXD
5 - (empty)
6 - White:RXD
Blue:CTS (not connected)
Red:5V (not connected)

but I cannot determine which is pin#1 on the adapter.

Then on my OneForAll URC-8811B00 remote I cannot determine which pin is #1. Does words JP1 go at top with #1 on top right (and #2 below)?

The Robman · Posted: Fri Oct 18, 2019 8:07 pm Post subject:

Regarding the URC-8811, there is an image in the first post that shows you where pin 1 is on the remote. As you noted, there is a 1 in the top right corner...

Regarding the DIY Gadget adapter, it's true that he doesn't label pin 1, which is a pity, but the good news is that, when using an old JP1 remote, you can't do any harm by connecting it backwards, so try the adapter both way round, and then when you determine which corner is pin 1, label it yourself.
_________________
Rob
www.hifi-remote.com
Please don't PM me with remote questions, post them in the forums so all the experts can help!