Quantity   Component name
1 × Yellow/Blue I2C 128x64 OLED Yellow and Blue I2C OLED from ebay with SSD1306 controller. Here's the partciular one I purchased: http://www.ebay.com/itm/291341369509
1 × Arduino Clone Arduino Pro Mini clone
1 × Garmin GPS 18
1 × RS-232 to TTL adapter
1 × Grayhill rotary encoder switch