Unable to connect with One for all URC7960 JP1.x

[rakesh77]

I created the transister based serial cable for my one for all urc7960. I tried downloading the remote data but remote master shows no remote found.

can someone help me in debugging the problem.

I am connecting the cables based on the pin number of the jp1 connector on the remote.

using windows 10 64bit, with remote master 2.03

Thank you

[The Robman]

well, the primary suspect is the cable that you built, so my guess is people will need a lot more info on the cable in order to help.

[rakesh77]

This is a known problem i think, its there on the fourm, and was resolved but the exact solution was not given.

I checked it here

https://www.hifi-remote.com/forums/viewt ... &&start=60

is there any way to check the cable??

will the cable using IC be better??

[The Robman]

Is this primarily an exercise and trying to build something yourself or do you just want a working cable? Because if it's the latter, I would just spend the $9 on buying a cable on ebay.

https://www.hifi-remote.com/forums/viewtopic.php?t=16360

[rakesh77]

I have a serial port on my pc, and the circuit of the cable was not difficult. so i decided to create it myself.

the link you posted, isnt it a usb to serial cable only??

sorry if i am wrong.

[The Robman]

Maybe I misunderstood what you are trying to do. The cable that I linked you to is a USB cable that can be used to program a JP1 remote, the only thing missing from it is a standard 6-hole JP1 connector, but if you are able to build your own devices, I assumed that wouldn't be a problem.

[rakesh77]

Thank You Robman for the link.

The cable is USB TTL Serial. The only difference between the original serial on our PC and this is the vcc voltage, which is 5 volts or 3.3 volts for high in this.

however i am confused about the pinouts. you are not connecting the vcc, i.e the pin 1. and pin 5 on the remote side?

are we suppose to remove pin 1 and pin 5 on the jp 1.3 cable??

thank you in advance.

[mdavej]

Since these facts are a surprise, you've probably built the wrong interface. I don't remember any JP1.3 interfaces that connect pin 5. Please post a link to the plans you used.

These threads may answer some of your questions:
https://www.hifi-remote.com/forums/viewt ... p?p=123712
https://www.hifi-remote.com/forums/viewt ... p?p=113264

[rakesh77]

i am using the transister design from this pdf. i used the corrected r6.

i ordered ftdi cable. hope to recieve it soon.

and i think i was not suppose to connect vcc(pin 1) when i am using batteries. cant check now as out on a trip. will check the cable once i get back home


https://www.hifi-remote.com/forums/dload ... le_id=5958

thank you for he links, they are helpful

[rakesh77]

I got my adapter, i tried with dtr pin. it didn't work.

Then i soldered the rts pin. and i tried it worked

Thanks for the help guys

[The Robman]

new subject moved to new thread...
https://www.hifi-remote.com/forums/viewtopic.php?t=17027