Ca 42 Usb To Uart Driver Arkmicro
AuthorMessageTechN9Ne1730DD-WRT UserJoined: 03 Feb 2010Posts: 57Posted: Mon Jun 13, 2011 0:16 Post subject: CA-42 Cable Not RecognizedI have Win 7 x64. Installed the driver and utility from the Serial Recovery Wiki.Going of another thread here I suspect that the wires in the cable are as follows:Red-3.3vBlack-GroundBlue-RxWhite-TxYellow-not usedHowever the cable itself does not provide any power so I used the phone splitter method I found here.
Hooked up the red cable to match up to the 3V3 pad on the router for power and twisted the blue and white just to test out the prolific drivers from the wiki. I tried the USB device viewer but neither it or windows seems to think there is a connection. I spent almost 2 whole days trying to read information to get this working and its not working. Can some one help me out here?Sponsor. TechN9Ne1730DD-WRT UserJoined: 03 Feb 2010Posts: 57Posted: Mon Jun 13, 2011 14:53 Post subject:Tried an old laptop with XP. Hooked up the power and ground to the router.
Nothing.PrimPastDD-WRT UserJoined: 15 Nov 2010Posts: 286Posted: Mon Jun 13, 2011 17:32 Post subject: Re: CA-42 Cable Not RecognizedTechN9Ne1730 wrote:Going of another thread here I suspect that the wires in the cable are as follows:Red-3.3vBlack-GroundBlue-RxWhite-TxYellow-not usedThere is no reason to 'suspect' nor should you use the colours from some other thread. The colours of the wires are completely arbitrary.
Read the wiki on serial recovery, and note the picture with the proper pinouts from the end of the connector that you cut off.TechN9Ne1730DD-WRT UserJoined: 03 Feb 2010Posts: 57Posted: Mon Jun 13, 2011 18:47 Post subject:Well i have a hard time cracking open the end piece, is it possible to diagnose the wires with a multi-meter and how so? Never used one before. I know its been said you can find the ground by measuring the ohms with a multimeter set to 220 OHM. I measured all the wires. Black is the only wire to give a reading, and when i touch the red wire, and hold it to the positive lead my Win 7 PC actually recognized the cable. In my uneducated guess, I believe this means the colors listed above are correct.PrimPastDD-WRT UserJoined: 15 Nov 2010Posts: 286Posted: Mon Jun 13, 2011 19:44 Post subject:You don't have to break open the end piece. Check for continuity with a multimeter between the end that you cut off and each of the wires on the cut off piece.
Arkmicro nokia CA-42 usb to TTL serial -clone Input Driver The difference is that with the cable with the ArkMicro chip you can power the the device that you connect the cable to with 3. Leave a Reply Cancel reply. Posted: Mon Jun 13, 2011 0:16 Post subject: CA-42 Cable Not Recognized: I have Win 7 x64. Installed the driver and utility from the Serial Recovery Wiki. Going of another thread here I suspect that the wires in the cable are as follows: Red-3.3v Black-Ground Blue-Rx White-Tx Yellow-not used.
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Then compare the wire colour to the picture linked to in the wiki. That will tell you which each wire is for, and which is tx, rx, and ground.
You can google how to use a multimeter.TechN9Ne1730DD-WRT UserJoined: 03 Feb 2010Posts: 57Posted: Mon Jun 13, 2011 20:12 Post subject:PrimPast wrote:You don't have to break open the end piece. Check for continuity with a multimeter between the end that you cut off and each of the wires on the cut off piece. Then compare the wire colour to the picture linked to in the wiki.
That will tell you which each wire is for, and which is tx, rx, and ground.How else can you tell which wire runs to which pin if you dont crack open the end? If I understand, your saying simply combine the wires back together, and test the pins, but again how is this of use? Isnt it much easier to simply test the wires?Quote:You can google how to use a multimeter.Its not using it in general, its using it to determine the rx and tx wires which google is not offering much help.PrimPastDD-WRT UserJoined: 15 Nov 2010Posts: 286Posted: Mon Jun 13, 2011 20:23 Post subject:TechN9Ne1730 wrote:How else can you tell which wire runs to which pin if you dont crack open the end?You should have cut it off leaving enough wire so that you could test which colour wire goes to each terminal in the wide flat end.
Then, once you know which goes to tx, which goes to rx, and which goes to ground, you will know where to attach each wire colour on your router.If you try doing it from the computer end of the cable, how are you going to tell which signal is which and what the values are supposed to be?You DID read the wiki AND look at the linked pinout picture, right?TechN9Ne1730DD-WRT UserJoined: 03 Feb 2010Posts: 57Posted: Mon Jun 13, 2011 20:36 Post subject:PrimPast wrote:You DID read the wiki AND look at the linked pinout picture, right?Reading and comprehending are two different things. I have read it over and over and over.Quote:If you try doing it from the computer end of the cable, how are you going to tell which signal is which and what the values are supposed to be?Well, I am just guessing but test each wire. If you ground out the negative prong of the meter, and tap the ground wire, you get no voltage reading. The multimeter is will provide power and then give a 3.3V reading on the power wire.