In the entrance of green house, we build a simplified version of keypad lock or a RFID solution, based on an ATMega328P development kit (e.g Arduino Uno [2]). User dials a pass code by keypad or insert a RFID card to the RFID reader (in interaction with an LCD 162 ). If the dialling code is identical to the saved one, an LED or a solenoid relay will be turn on. a) Write the program using C and Arduino IDE