Hello all
I have recieved this board in the mail today:
I was told that I would need this board for my GPS a furuno GP-32 to interface with the arduino.
But now I am a bit lost, how do I connect this board to my GPS and how to I connect the board to my arduino?
I want to extract the GPS NMEA signal comming out of my GPS, but I have found some code, that can display everything that the GPS sends to the arduino in the serial monitor, so that should be fine to start with.
Thanks in advance
Jacob
The Blue and White wires are shown to be a Current Loop interface.
The Blue, Yellow, and Green wires are RS232. Blue is 'ground', Yellow is the transmitter and Green the receiver.
The pinout of your converter is not clear. Each end has a +, a -, an R and a T. Perhaps a look at the MAX3232 datasheet would help.
Thank you very much for the explanation of the wires.
So I take the blue and connect to "-", then I take the green and connect to R and the yellow and connect that to T.
Then I would take the other end of the converter (the TTL side) and connect wires from T to RX on my arduino, R to TX on my arduino and then "-" to ground and + to 5volts on the arduino, or have I misunderstood things?
What if I only need the arduino to recieve signals and not send anything out to my GPS. Then I would just skip connecting the TX of the arduino to the R on the converter?
I will look into the pinouts of the board and post what I find out.
I may ask very stupid, but what is a current loop interface?
JacobJ:
I may ask very stupid, but what is a current loop interface?
Arh I see, current instead of voltage as the signal, and as I can read its a old way of communicating between devices.
What about the previously mentioned wirings, does those connections seem right?
Can you explain to me why only a ground (blue wire) is needed and not a positive one?
JacobJ:
Can you explain to me why only a ground (blue wire) is needed and not a positive one?
You might need power on both sides of the MAX3232. I'd look at the datasheet.