Lazeman design this tiny GPS record module for RC plane model.
It's a arduino project runs on ATmega328p. GPS related code is from Multiwii and "Adafruit_SSD1306" lib is used to provide OLED displaying. OLED is the common 128*64 type.
When power-up, best record will be shown, 3 seconds later, it will start to listen to GPS. When GPS fixed, real-time data is shown in the left while best record in the right. Record data is stored in EEPROM each 10s in case of power-off. Long press button will reset the record.
OLED could be removed to reduce weight when in the air.
If OLED is plugged again, short press button can wake-up the OLED.
