MN5010HS MiniMod GPS & Arduino - SparkFun Electronics Forum

MN5010HS MiniMod GPS & Arduino#63318

By splicer - Mon Jan 12, 2009 9:51 am

- Mon Jan 12, 2009 9:51 am #63318

Can anyone give me tips on getting this setup? I have the NMEA library loaded, and it wants serial communication. I'm new, and learning, so maybe I'm asking a dumb question, but how would I wire it up?

#63343

By ttabbal - Mon Jan 12, 2009 8:49 pm

- Mon Jan 12, 2009 8:49 pm #63343

TX line on GPS to RX line on uC. Power and GND. Aren't there only 3 pins on those things?

------ Travis

#63361

By splicer - Tue Jan 13, 2009 8:59 am

- Tue Jan 13, 2009 8:59 am #63361

There are 4 pins , TX RX VCC AND GND.

#63362

By FartingMonkey92 - Tue Jan 13, 2009 9:06 am

- Tue Jan 13, 2009 9:06 am #63362

Are you talking about the GPS MiniMod or the GPS Micro-Mini?

#63422

By splicer - Wed Jan 14, 2009 7:34 am

- Wed Jan 14, 2009 7:34 am #63422

I'm sorry, Micro-Mini!

#63425

By FartingMonkey92 - Wed Jan 14, 2009 8:14 am

- Wed Jan 14, 2009 8:14 am #63425

I can't seem to find whether it can take a 5V TTL signal...
But if it can, it's a simple job to hook up. VCC to your Arduino's 5V and GND to Gnd, TX to RX and vice-versa...

Anyone else with extra advice?

#63447

By ttabbal - Wed Jan 14, 2009 1:46 pm

- Wed Jan 14, 2009 1:46 pm #63447

The datasheet for the module specifies 1.8V TTL logic levels. I imagine you are going to need a level shifter to get the levels to match for a 5V micro. If your micro can sense 1.8V as a logic high, you might be able to set it up as a receive only device without worrying about the levels.

Wire it as I mentioned before. But read the datasheet for your microcontroller to see if it can handle levels that low.

------ Travis

#63466

By Freak Nigh - Wed Jan 14, 2009 6:05 pm

- Wed Jan 14, 2009 6:05 pm #63466

We couldn't get it to work with hyperterminal until we inverted the signal and then brought it up to 5V. Dunno if that helps

#63478

By FartingMonkey92 - Thu Jan 15, 2009 1:25 am

- Thu Jan 15, 2009 1:25 am #63478

ttabbal wrote:"The datasheet for the module specifies 1.8V TTL logic levels. I imagine you are going to need a level shifter to get the levels to match for a 5V micro. If your micro can sense 1.8V as a logic high, you might be able to set it up as a receive only device without worrying about the levels."

In the schematic for the GPS Micro-Mini, it has a MOSFET on the TX line to do the level conversion to whatever voltage the module is running from...
Not too sure about the RX line tho...

Re: MN5010HS MiniMod GPS & Arduino#120642

By Dr_Guy - Fri Feb 18, 2011 6:01 pm

- Fri Feb 18, 2011 6:01 pm #120642

For the Arduino users- I just got two to work alongside one another using an Ardweeny. The VCC pin acts as the Rx as well. In addition to what you have you should also get the NewSoftSerial library (http://arduiniana.org/libraries/newsoftserial/). In that is sample code that will work (TwoNSSTest.pde). The pins are connected as such:
GPS1: Tx - Digital 2, GND - GND, VCC - Digital 3
GPS2: Tx - Digital 4, GND - GND, VCC - Digital 4

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