Eggtimer Rocketry Eggtimer TRS Assembly Manual page 14

very much. You should hold the iron for about 5 seconds after the solder flows, then remove
the heat and wait at least 30 seconds before you touch anything. If you do this right, you
should see a nice shiny solder joint filling in the gap between the PC board and the GPS
module's pad, with a slight radius as it transitions from the board up to the GPS module's pad.
The solder should just fill in the half-moon on the side of the GPS module's pad.
IMPORTANT: The GPS module has little "half moon" pads at the edge of the board. Make
sure that the solder flows into the recesses of those pads, or you won't get a good connection!
__ CHECK AGAIN that the GPS module is properly oriented and that the pads are
centered on the PC board's pads. Make sure that solder wicks up to the "half moon" in the
GPS pad. If the GPS module moved a little during soldering, heat up the solder joint and
GENTLY move it into place. If you cannot get it to move without removing it, remove the
masking tape, heat up the solder joint, then GENTLY lift the module from the board. Get a
new piece of masking tape, and try again.
__ Once you have successfully soldered the lowr-right corner pad and confirmed that the
module is properly oriented on the board, repeat the procedure for the other three corners in
this order: Lower-Left Corner, Upper-Left Corner, Upper-Right Corner. Be sure to wait at
least 30 seconds between each solder joint to allow the module to cool down.