This is a shield for beginners and advanced users alike. It has the following features:
- 16X2 LCD character display
- 6 push buttons – four arranged in arrow keys and two more on the side
- 2 RJ11 ports for long and robust connections with sensors or control devices
- Optional buzzer and LED in place of the RJ11 ports
- Real time clock with battery backup keeps the time when Arduino is turned off
- EEPROM for easy data logging keeps data when Arduino is turned off
- GPS connector and breakout for this popular GPS module
(GNSS Receiver - EM-506N5 - GPS-19629 - SparkFun Electronics) - Reset button for Arduino
- All Arduino pins are brought out for maximal flexibility.
- Hackable for more functionality (see the end of the assembling)
Dedicated page: Phi-1 shield | LiuDr Electronic Solutions LLC Official Blog
Documentation: Phi-1 documentation 010811
I have written many fully functional codes for this shield, GPS logging, display, input letters, numbers or symbols with the keys (Morse code trainer), alarm clock, menu functions etc.