X50V pin layout? - Page 9

kardath · 06-28-05, 12:38 PM

Hi,

What is the voltage for pin out (RX & TX of RS232).
What is the port COM for the RS232 pins?

Thanks.

bigbop · 06-28-05, 01:32 PM

Originally Posted by kardath

Hi,

What is the voltage for pin out (RX & TX of RS232).
What is the port COM for the RS232 pins?

Thanks.

The direct pins on the cradle connector do NOT support the RS232 voltages of +/- 5v to 12v. If you connect a serial device directly to the Axim, you will fry the interface. You need a LVTTL to RS232 converter dongle. Do a Google search and you will find many sources and construction plans.
The COM port is COM1.

Emmtee · 06-28-05, 04:59 PM

Originally Posted by bigbop

The direct pins on the cradle connector do NOT support the RS232 voltages of +/- 5v to 12v. If you connect a serial device directly to the Axim, you will fry the interface. You need a LVTTL to RS232 converter dongle. Do a Google search and you will find many sources and construction plans.
The COM port is COM1.

... he's a first time poster, I'm quite sure he lacks understanding of electronics and did not read the threads completely :)

btw - it seems the axim can survive such voltages - but anyway - it won't work because the signals are ioverted *G*

kardath · 06-29-05, 03:56 AM

Thanks for your answers.

If i understand your answer the voltages on the pin are +-5V. If i want to use this with a serial device i must use a MAX232 :) for convert voltages to +/-12V.

Emmtee --> i've read the thread completely and i understant it ;) i'm just bad in english not in electronics lol :p

Emmtee · 06-29-05, 05:46 AM

Originally Posted by kardath

Emmtee --> i've read the thread completely and i understant it ;) i'm just bad in english not in electronics lol :p

I'm still thinking you missed thread 66654 - one on building a serial cable:

http://www.aximsite.com/boards/showthread.php?t=66654

07-29-05, 12:45 AM

plenty of ppl building vga cables... but no one saying they got it working?...

and has anyone?

I have just ordered some connectors from a link in another thread, only $4 ea :-) gonna make

vga/power cable
serial/power cable
vga/serial/usb/power cable

and a spare incase I screw up any of the above connectors :-)

reason: I don't want all those cables hanging out the back when I'm in a server room trying to upload a new config to a router.

might make the vga/seial/usb/power into a block that fits on the end of teh pda.

hopper64 · 07-29-05, 01:19 AM

good luck, I tried for awhile then gave up

forests_gump · 07-29-05, 11:54 AM

Originally Posted by stevodude

plenty of ppl building vga cables... but no one saying they got it working?...

and has anyone?

You want Proof?

bigbop · 07-29-05, 01:50 PM

Originally Posted by forests_gump

You want Proof?

NICE! :approve:
What schematics did you use and if you used the Aximbob info, did you change anything?
I'm just about to make a VGA cable for myself.
Any possibility of posting internal pictures of your connector wiring?
Thanks!

fleury · 07-29-05, 02:59 PM

It sure does work! Just finished mine!

Used the full pinout available here as well as the Gomadic pin number reference I found somewhere here in this topic.

Some pics from the Brazilian cable :approve: :approve:

Took this just after I realized I had soldered some wires in the wrong pins!

Gomadic plugs are very well constructed but require some pratice to solder. Don't even try without thin solder (like 0,5 mm width) and a precise soldering iron.

Easier to solder than the X50v plug the VGA still requires some patience. U may find prewired VGA plugs anyway.

There u go... everything u need to make the cable... and the cable itself. The solder was in the WC by the time I took the photo :) :)

And at last but not least... just to see it working.
Right click and save as...

Regards from Brazil!

bigbop · 07-29-05, 11:25 PM

Excellent!! :approve:
Thanks for the photos AND video.
I thought about adding a VGA and serial interface to the cradle, but there isn't enough room. So it looks a cable is the way to go.

04-19-06, 09:28 AM

Here's what I did, and here's some qualifications for doing what I did.
I wanted to be able to hook my Axim to a VGA monitor.
I wanted it to be convenient, no dragging around huge cables. If I attatched a cable to my charger adapter then it wouldn't be a small, convenient charger adapter anymore.
It had to be cheap, I didn't want to buy another axim charger and VGA cable.
I felt like building something :)

I used a $2.00 VGA plug, and some 24 guage magnet wire I had laying around. If I had to rebuy the wire, it would have been $3.00. So, in all a $5.00 project (not counting glue and solder) It is a pain to solder to those pins, especially since all I had available was my blunt-tipped 30 watt iron. Also used a dremel for cutting the hole.

I did have to trim back some of the internal shielding to make everything fit (pair of scissors worked fine) and grind down the VGA pins a little. I left the original charger wires and pins alone, so this still works as a charger adapter (tested). All in all it took about an hour and a half.

So, what do you think?
-Aaron

Emmtee · 04-19-06, 09:45 AM

Very nice Work! :approve:

but as usual one point to keep in mind: VGA cables are real trunks (heavy, crude).... without a thinner cable between the vga plug and the x50v-plug, any force applied to the vga cable WILL:exc: continue to propagate to the X50v-plug and very likely damage it - better use the hole at the top to "eject" the tapped cables and then run some 20-30cm long, thin, shielded cables to a vga connector - this way it's still required to be carefull when handling the setup, but the crudeness of the VGA connector will be broken by the flexible cable part - that way even stronger pulling forces "downward" won't do harm, as they will be catched by the connector-hooks - only thing to avoid: any pulling force to the front or back of the device - as that's the constructional weakness of the x50v-plug :)

But I can still say: "Have Fun!" :)

Originally Posted by lordaaronj

Here's what I did, and here's some qualifications for doing what I did.
I wanted to be able to hook my Axim to a VGA monitor.
I wanted it to be convenient, no dragging around huge cables. If I attatched a cable to my charger adapter then it wouldn't be a small, convenient charger adapter anymore.
It had to be cheap, I didn't want to buy another axim charger and VGA cable.
I felt like building something :)
---snip---

Cyber_Kir · 05-01-06, 09:12 PM

Hi everyone,

You guys made excelent work!!!! Thank you!!!
It seams that this thread is only place with full pinout for Axim 50/51.

But I've still got a question.

Has anybody tryed to connect to Axim wire GPS receiver based on new chipset SiRF Star III ???

I've got one. It's required one more COM pin - RI (It used for DGPS IN).
So, as I understand 5 and 6 pins on Axim connector are Access detect. One of tham should be DCD and another one is RI.

The question is which one RI?

rodor · 08-02-06, 06:27 PM

I think I have found some more info in the pinout. I bought a car holder with charger from Brodit. I, of course, immediately opened the cable to peek inside. First good news: The connector is, as far as I can tell, identical to the ones from Gomadic. This means you can buy the Brodit holder and make your own cable using a Gomadic plug without any further adjustment.

Second good news: Brodit have made a nice little PCB inside the plug and labeled many of the connecting pads. It seems they use the same PCB for several different cables, so even though this is a charger-only cable, it still contains lots of useful information. The connections are not easy to see in the pictures, but here they are:

Axim pin: PCB label
2,4: "V+"
5: "ID1"
6: "ID0"
7: "3.3V"
8: "CTS"
9: "RTS"
10: "RXD"
11: "TXD"
12: "GND"
13: "DSR"
14: "DTR"
15: "GND"
16: "GND"
21: "USB"
22: "D+"
23: "D-"

Now, if we could only find the audio in and out pins. They MUST be there.