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prod
Joined: 10 Oct 2006 Posts: 14
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Posted: Mon Oct 16, 2006 1:55 am Post subject: Simple interface not responding? |
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Tried to make up the parallel JP1 cable but keep getting "no response from interface." Parallel is chosen in IR.exe and port is enabled.
I checked all pins using an ohmeter, all seems correct. Wires 1 and 2 are shorted (10 Ohm), wire 3 to pin 25 is 10 Ohm, wire 4 to pin 11 is 10 Ohm, wire 5 to pin 4 is 1KOhm, wire 6 to pin 3 is also 1KOhm.
However when I try to read resistance across the 1N4004 diode, it seems to count down slowly from about 1MOhm. Does that mean this diode is too slow? The only other type I have is 1N914, would that be better?
The local electronics store doesnt have the 4148.
EDIT: went out and picked up some 4148 diodes from another store.
Bad news, still no response from the interface. I picked up parts for 2 more cables so I will start over again. |
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prod
Joined: 10 Oct 2006 Posts: 14
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Posted: Wed Oct 18, 2006 2:55 am Post subject: |
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WOOOOOOT
Made another cable and it works 8)
Im guessing it was bad soldering or cable.
This is the old cable/new cable, guess which works:
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prelude JP1 Vendor
Joined: 26 Jun 2004 Posts: 119 Location: Canada |
Posted: Thu Oct 19, 2006 3:20 pm Post subject: |
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right side is the good one. _________________ Get the coolest diy gadgets from http://www.diygadget.com today! |
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prod
Joined: 10 Oct 2006 Posts: 14
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Posted: Fri Oct 20, 2006 10:51 pm Post subject: |
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8) Right you are, seems to work just perfectly.
I havent bothered to diagnose the first one, it looks correct though. |
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jherrick JP1 Vendor
Joined: 31 Dec 2003 Posts: 225 Location: South Berwick, ME |
Posted: Sat Oct 21, 2006 7:43 am Post subject: |
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I am having a bit of a hard time seeing, but it looks like you have two 1K Ohm resistors on the cable that doesn't work, and 10K Ohm on the one that does. 1K Ohm is Br, Bk, Rd; 10K Ohm is Br, Bk, Or. Red and Orange are easy to confuse.
Jim |
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The Robman Site Owner
Joined: 01 Aug 2003 Posts: 21238 Location: Chicago, IL |
Posted: Sat Oct 21, 2006 7:56 am Post subject: |
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Also, it sure looks like there are parts that are touching each other in the first cable that shouldn't be. _________________ Rob
www.hifi-remote.com
Please don't PM me with remote questions, post them in the forums so all the experts can help! |
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prod
Joined: 10 Oct 2006 Posts: 14
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Posted: Sat Oct 21, 2006 11:06 pm Post subject: |
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They are all 1k resistors, the blue ones brand new just out of the box.
Things in the pic are a little twisted, when tested nothing was touching and bare wire was taped. Using a multimeter nothing was shorted out. Still cant figure it out, but the new one works.
Im happy to have one working, but if someone wants the old one to resolder and fix for themselves I will ship it to ya no charge, AS IS |
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