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Choose the right JP1/JP1.x interface cable - Read this first
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The Robman
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Joined: 01 Aug 2003
Posts: 21210
Location: Chicago, IL

                    
PostPosted: Mon Dec 01, 2008 11:54 am    Post subject: Reply with quote

I have just updated the first post (with Tommy's input)
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Rob
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nevwdr



Joined: 20 Dec 2008
Posts: 5
Location: Nottingham, UK

                    
PostPosted: Sat Mar 07, 2009 7:51 am    Post subject: 74HC266 Reply with quote

Hi Guys,

I am finding it very hard to source a HC74266 for the serial interface, can I use any alternate?

I can obtain the following:

74 HC 00 N
74 HC 02 N
74 HC 04 N
74 HC 08 N
74 HC 123 N
74 HC 14 N
74 HC 154 N
74 HC 164 N
74 HC 175 N
74 HC 193 N
74 HC 238 N
74 HC 240 N
74 HC 244 N
74 HC 245 N
74 HC 32 N
74 HC 373 N
74 HC 374 N
74 HC 390 N RO
74 HC 393 N
74 HC 4040 N
74 HC 4049 N
74 HC 4051 N
74 HC 4060 N
74 HC 4066 N
74 HC 4538 N
74 HC 541 N
74 HC 590 N
74 HC 595 N
74 HC 74 N
74 HC 86 N


Will any of these do?
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Tommy Tyler
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Joined: 21 Sep 2003
Posts: 412
Location: Denver mountains

                    
PostPosted: Sat Mar 07, 2009 9:05 am    Post subject: Reply with quote

Sorry, the words "no substitutions" on the schematic mean just that.

Try these sources:
here,
here,
here,
or here.

When you post a request like this it's always a good idea to mention where on the planet you are located.
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nevwdr



Joined: 20 Dec 2008
Posts: 5
Location: Nottingham, UK

                    
PostPosted: Sat Mar 07, 2009 12:52 pm    Post subject: Reply with quote

Oops sorry, added my location now!

I am in the UK, only place easy to get IC's here is place called Maplins, that where the list is from. I'll have to go discrete route instead.

Thanks
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Tommy Tyler
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Joined: 21 Sep 2003
Posts: 412
Location: Denver mountains

                    
PostPosted: Sat Mar 07, 2009 1:11 pm    Post subject: Reply with quote

If you would rather go IC, send me your mail address via P.M. and I'll pop one in the post to you.
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JLPicard



Joined: 14 Dec 2009
Posts: 42

                    
PostPosted: Fri Oct 28, 2011 10:12 pm    Post subject: Reply with quote

It appears as if the 802300 is no longer available from Delcom, they are recommending 802370 as a replacement. Is this the current chip being used in the USB cables being sold?
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mdavej
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Joined: 08 Oct 2003
Posts: 4500

                    
PostPosted: Fri Oct 28, 2011 10:26 pm    Post subject: Reply with quote

Nope (thank God). Current designs use FTDI chips.
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The Robman
Site Owner


Joined: 01 Aug 2003
Posts: 21210
Location: Chicago, IL

                    
PostPosted: Sat Oct 29, 2011 10:40 am    Post subject: Reply with quote

Just to clarify, Delcom chips are used in JP1 (EEPROM) cables and FTDI chips are used in JP1 (Flash) cables.
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Rob
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JLPicard



Joined: 14 Dec 2009
Posts: 42

                    
PostPosted: Sat Oct 29, 2011 11:40 am    Post subject: Reply with quote

Is there a build PDF that utilizes the FTDI chip that can be downloaded?

NM I answered my own question. "At the present time there is one vendor (Tommy Tyler) selling a JP1.2/3 (flash) interface that plugs directly into a USB port. There are no published DIY instructions or schematics for this type of interface."
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3FG
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Joined: 19 May 2009
Posts: 3365

                    
PostPosted: Sat Oct 29, 2011 1:43 pm    Post subject: Reply with quote

If you want to build an interface yourself and have a serial port on your computer, it isn't necessary to use a USB-based system.
Serial interface
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JLPicard



Joined: 14 Dec 2009
Posts: 42

                    
PostPosted: Sat Oct 29, 2011 1:53 pm    Post subject: Reply with quote

3FG wrote:
If you want to build an interface yourself and have a serial port on your computer, it isn't necessary to use a USB-based system.
Serial interface
I did DL that plus the Parallel interface, but unfortunately I have neither on my computer. I will just order a cable from Tommy after his store reopens.
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mdavej
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Joined: 08 Oct 2003
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PostPosted: Sat Oct 29, 2011 2:11 pm    Post subject: Reply with quote

You can use a USB-Serial adapter with the serial cable.
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vickyg2003
Site Admin


Joined: 20 Mar 2004
Posts: 7073
Location: Florida

                    
PostPosted: Sat Oct 29, 2011 2:16 pm    Post subject: Reply with quote

mdavej wrote:
You can use a USB-Serial adapter with the serial cable.


I have better luck with the serial cable with the USB-Serial adapter. I've destroyed two of Tommy's USB cables with heavy use, so I am still using my old serial cable from that prelude built years ago.
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hookminor



Joined: 15 Apr 2013
Posts: 10
Location: Brampton, Ontario, Canada

                    
PostPosted: Thu Apr 18, 2013 7:30 am    Post subject: Reply with quote

I really want to give the whole JP1 thing a try. The obvious first step is getting a cable.
Although I found the thread about Tommy Tyler's store a little confusing, I am going to presume that the store is closed and Tommy is no longer selling cables.
I have found listings for required parts (FTDI cables and 2x3 housings) on eBay (cannot find any of the parts in any brick and mortar stores), but I have also found a couple of ready-made cables on eBay that are only a few dollars more expensive, and are sold closer to home so it will not take anywhere near as long to get them.
Is there anything that I should be asking the sellers of the ready-made cables on eBay for I purchase?
I was thinking that I should ask the following:

Will the cable work on my Atlas 1056B03 (I believe it's a JP2) and my other Atlas (the exact model is not on the remote, but it's silk-screened with JP1.2 on it)?
Are there any drivers required for the cable to work, and where will I find these drivers, if required?

Anything else I should ask or look out for?
People on this site have been very patient with my questions, and I really appreciate it and look forward to any help with this.
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3FG
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Joined: 19 May 2009
Posts: 3365

                    
PostPosted: Thu Apr 18, 2013 10:43 am    Post subject: Reply with quote

I already posted about the concern if cables based on the Prolific chip set will work with JP2 remotes. Also, it's not clear why, but drivers for the Prolific chip set are more finicky than the FTDI drivers, especially with Win7 and presumably Win8.
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