GPS Module not sending data on Puck.js

Just to elaborate on @allObjects post as I'm not sure it's that clear:

• Do you have all the GNDs connected together?
  

• The GPS TX pin needs to be connected to Puck.js RX (it's not TX->TX) - which with the inital code here is D28:

  Serial1.setup(9600,{tx:D29,rx:D28});
  var gps = require("GPS").connect(Serial1, function(data) {
  console.log("DATA", data);
  });
  

You mentioned in your post that you're getting some data on D29 to it might just be that you have the pins swapped over :)

You could also try:

Serial1.setup(9600,{tx:D29,rx:D28});
Serial1.on('data', function(d) {
  console.log(JSON.stringify(d));
});

Which will print out all data that was received - whether it's a valid GPS line or not. Might be handy for debugging?