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big question about 'rmapes' style cell phone connectivity...

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Topic: big question about 'rmapes' style cell phone connectivity...    
corb
Member

Registered: Jul 2000
Location: austin, texas
Posts: 61

hey something i don't understand so far is why there is so much concern about the wiring together of the cell phones and the visor ('rmapes' stlye when you can use an IR enabled phone (can't you?)

my questions i guess are:
1. with an IR phone, do you just point the visor beam at the phone beam dial up the ISP on the cell and leave them sitting together until you're done?
2. if so, that seems easier than the wiring method. is it as good? or is it more expensive to get an IR phone? i don't know a lot about cell phones, so i'm just wondering.

corb is offline Old Post 12-08-2000 03:47 PM
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MarkEagle
VisorCentral Staff

Registered: Dec 1999
Location: Connecticut USA
Posts: 2682

On a VDx, you'll need 3rd party software to do the IR. In addition, consider this: the Visor and phone need to be in fairly close proximity to each other for IR to work. For something really quick, this might be ok, but what about heavy duty surfing? Remember, the Visor is a handheld device (as is a cell phone). Trying to surf and keep both devices pointing to each other with only 2 hands has got to be a real feat (if it can even be done ). The hard-wire method provides a more stable use, IMHO. Plus, and I'm not positive about this, but I think IR consumes more power from the Visor than a wired serial connection does.

I've been using my Visor/StarTAC combo for the past week and just love the way it works. I can essentially connect from anywhere at anytime and the 14.4 connection isn't really all that bad. Since I'm using this setup to mainly retrieve email, speed isn't an issue.

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MarkEagle is offline Old Post 12-08-2000 04:38 PM
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fnj
Member

Registered: Apr 2000
Location: Columbia, MD
Posts: 16

How?

Hi Mark,

I've got a few questions. How do you have your Startac and your Visor working together? Are they hardwired? Who is your mobile provider? What technology do they use (PCS, CDMA, GSM etc.)?

Many thanks!
Fred

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fnj is offline Old Post 12-08-2000 07:15 PM
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MarkEagle
VisorCentral Staff

Registered: Dec 1999
Location: Connecticut USA
Posts: 2682

Re: How?

quote:
Originally posted by fnj
How do you have your Startac and your Visor working together? Are they hardwired? Who is your mobile provider? What technology do they use (PCS, CDMA, GSM etc.)?

I built a custom data cable following instructions that can be found in this thread. It's basically just 3 wires connected on each end as follows:

Visor -----> StarTAC
1 (RX) ----> 6 (TX)
8 (TX) ----> 7 (RX)
4 (GND) ---> 10 (GND)

I had some HotSync connectors lying around and used a phone connector from a Belkin lighter plug adapter. It's important to note that both the Visor and the StarTAC use TTL level signals, not RS232. The regular Motorala data cable for the StarTAC has a built-in circuit to convert TTL to RS232 and is powered by the PC's serial port - it will not work as is with the Visor.


quote:
Who is your mobile provider? What technology do they use (PCS, CDMA, GSM etc.)?

I just signed up with SprintPCS (CDMA). Their Holiday Promo plans include an option for 6 months free Wireless Web access.

Overall, I'm quite happy with the way the whole setup works.

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MarkEagle is offline Old Post 12-08-2000 09:00 PM
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rmapes
Member

Registered: Apr 2000
Location:
Posts: 73

Anybody happen to also know the pinout on the Sprint Qualcomm Touchpoint phone or how I might find out? It might be the same as the Motorola StarTac, but probably not.

rmapes is offline Old Post 12-09-2000 07:49 PM
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Kupe
Member

Registered: Jul 2000
Location:
Posts: 106

Mark,

I am about to try the same TTL --> TTL mod you just made for your StarTac to Visor connection, but I have a couple of quick "technique" questions before I start.

1. STARTAC END:
I just bought my StarTac yesterday and picked up the car charger to go with it. Neither my original charger (in the box) or the car charger appear to have all 15 pins (looks like 4, 5, 10, 14 - probably the recharger-only lines). Where did you get the recharger with all 15 pins in it?

2. VISOR END:
a. Do you think a regular USB hot synch cable (appropriately rewired) will do the trick?
b. Did you discover a non-destructive means for opening up the visor-end connector in your process?

Thanks,

Kupe

Kupe is offline Old Post 12-19-2000 01:22 PM
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MarkEagle
VisorCentral Staff

Registered: Dec 1999
Location: Connecticut USA
Posts: 2682

quote:
Originally posted by Kupe
1. STARTAC END:
I just bought my StarTac yesterday and picked up the car charger to go with it. Neither my original charger (in the box) or the car charger appear to have all 15 pins (looks like 4, 5, 10, 14 - probably the recharger-only lines). Where did you get the recharger with all 15 pins in it?

2. VISOR END:
a. Do you think a regular USB hot synch cable (appropriately rewired) will do the trick?
b. Did you discover a non-destructive means for opening up the visor-end connector in your process?



I purchased a Belkin car charger at Staples that had all 15 pins in the connector. As for the USB cable, it does not have any connections on the serial pins (1 & 8) so it can't be used as is... you'd have to open the connector and rewire it plus add the phone connector to the other end. I'm sure it could be made to work. In regards to the connector, I had purchased some from ATL a while ago so I didn't need to open one up. Others have said it can be done by prying it open carefully so that it doesn't break.

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MarkEagle is offline Old Post 12-19-2000 01:32 PM
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mgflorez
Member

Registered: Aug 2000
Location: Cincinnati, OH, USA
Posts: 79

StarTac and Visor Dlx

How much would you want to make me one? Having no facility or ability to pry and rewire, but owning a StarTac 7868 and VDx, I would love to go wireless.

mgflorez is offline Old Post 12-22-2000 07:45 PM
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