MapThis 0.5.20 with holux support for slim psps

**deniska** · May 14th, 2008, 06:33

find out the TX voltage on the thing and what protocol/baud it uses... it might work, but first make sure that voltage is <3V (you may need a higher resistance value). overwise you'll fry the serial port on PSP

**jodybocci** · May 14th, 2008, 21:38

thanks

**Simplified_17** · May 15th, 2008, 06:10

the gps 12 puts out 5v and i have a 1K Ohm- 1/2 watt resistor on the tx line. what resistance might you suggest deniska?
and by protocol/baud- what does that mean im not sure what the baud is..?

**r2000** · May 15th, 2008, 19:27

Originally Posted by Simplified_17

the gps 12 puts out 5v and i have a 1K Ohm- 1/2 watt resistor on the tx line. what resistance might you suggest deniska?
and by protocol/baud- what does that mean im not sure what the baud is..?

I do not think it will work.

GPS12 puts out RS232 level while PSP accepts only TTL.
A simple resistor will not do.
You need a RS232>TTL converter.

**Simplified_17** · May 16th, 2008, 06:24

Oh....ok i see, where do you think i could get one or maybe how to construct a cable and parts to make a RS232>TTL converter?

**sat6me** · May 16th, 2008, 21:59

Thanks EVERYONE!!!!!!
ESPECIALLY DENISKA!

**r2000** · May 17th, 2008, 08:31

Originally Posted by Simplified_17

Oh....ok i see, where do you think i could get one or maybe how to construct a cable and parts to make a RS232>TTL converter?

There were information making such with the phat but I have not seen any for the slim. But basic theory and construction is the same so you could search for such information for the phat.

But frankly I would just get a holux or PSP GPS as the ultimate cost (and time) of your converter will not be that much different.