Sample questions

• How does the temperature sensor communicate with the controller?

  Through digital or analog signals
• What is the temperature range of the sensor?

  Specific range not provided
• What is the resolution of the temperature sensor?

  Specific resolution not provided
• What is the basic principle of operation for the heartbeat sensor?

  It detects blood flow through light absorption
• How did you test the SD card to ensure it was working?

  By writing and reading data from it
• Which library did you use to setup the GSM Module?

  Specific library not provided
• What are the connections on the OLED?

  Specific connections not provided
• What are your conditions for a remote alert, and where is this implemented in code?

  Conditions not specified; code location not provided
• In figure 1, what is the mistake with one of the signal lines?

  Specific mistake not provided
• What is the purpose of the battery in the RTC?

  To keep time when power is off
• State three differences between the Arduino Mega and the Uno.

  Mega has more pins, memory, and features
• Which communication band did you use for the GSM module?

  Specific band not provided