This is an eval board for the ET-312 GPS module. We developed this eval board for it, but messed up the ET312 footprint. We had to significantly modify the back of the PCB to get these to work. Board works and GPS gets a good lock. These are ding/dent because of the PCB mods. This is the only stock we will have.

• On board 5V regulation
• Power over USB
• Power over 5.5x2.1mm barrel jack (center positive)
• Status LED
• 12mm Coin Cell backup battery
• Serial over USB (FT232RL VCP)
• Serial over dual RS232 connection
• All serial ports broken out

• GPS Eval Board Schematic v1.0