Mobile Logger for Science and Environmental Studies
Refinement of the mobile logger
(No longer needed since 25 May 2018)
To save electrical power (especially during long time automatic measurement), the LCD could be turned off manually without affecting other functions of the mobile logger. This can be easily done by the following steps:
- power off the mobile logger.
- unscrew the four screws at the corner of the Front plate.
- unplug the wire connected to the VCC pin of the LCD module.
- use a F-M DuPont wire to connect the VCC pin of the LCD module to pin 25 of the Arduino Mega board.
- power on the mobile logger.
- after the display of the usual temperature value, press # on the keypad and the LCD will be turned off. Press # again, the LCD will have light but no message. You need to press another key, say 2 to get a reading.