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I know you can use a nokia dku-5 cable as a 3.3 volt serial port, but I
need to get a 5v one. 3.3v one doesn't work into the device.

Anyone know of any cellphone data cables that use 5v serial signaling?

Richard wrote:
> I know you can use a nokia dku-5 cable as a 3.3 volt serial port, but I
> need to get a 5v one. 3.3v one doesn't work into the device.
>
> Anyone know of any cellphone data cables that use 5v serial signaling?

Why not just use a regular USB/serial converter?

EMB wrote:
> Richard wrote:
>> I know you can use a nokia dku-5 cable as a 3.3 volt serial port, but
>> I need to get a 5v one. 3.3v one doesn't work into the device.
>>
>> Anyone know of any cellphone data cables that use 5v serial signaling?
>
> Why not just use a regular USB/serial converter?

because that will be rs232 levels, and I need 5v ttl levels, and a
converter between the 2 isn't inexpensive like cellphone data leads are.
All it needs to be is the usb to serial chip with the right pins bought
out. I possibly could modify a usb to rs232 cable but getting a mobile
phone cable and chopping off the propriatry connector is easier.

Richard wrote:
>> Why not just use a regular USB/serial converter?
>
> because that will be rs232 levels, and I need 5v ttl levels, and a
> converter between the 2 isn't inexpensive like cellphone data leads are.
> All it needs to be is the usb to serial chip with the right pins bought
> out. I possibly could modify a usb to rs232 cable but getting a mobile
> phone cable and chopping off the propriatry connector is easier.

http://www.digitalnemesis.com/products/rlc1/

The above link may be a cheap solution for you.

Incidentally the horrid USB/RS232 converter I have outputs at 5v TTL
levels. Unfortunately it has no markings and I have no idea of it's
origins.