GPS module - Serial Voltage?

unnamed_one

I want to connect the GPS Module PMB-648-SiRF to my Raspberry Pi. The Raspberry Pi can only receive signals at a max of 3.3 volts. From what I gathered about this module, the GPS module uses a UART TTL serial port, and I have read that UART TTL sends signals at 0 and 5 volts. Can you confirm whether the GPS module is transmitting at 5 volts or 3.3 volts? I don't want to damage my Raspberry Pi board.

Thanks.

Beau Schwabe

Welcome to the forum unnamed_one,



The info page "Details" indicate 3.3V or 5V operation.... meaning that if you power it with 3.3V then the Serial voltage will only be 3.3V

http://www.parallax.com/product/28501

unnamed_one

Thank you and thank you! I look forward to tinkering with more of your products.