Thursday, April 26, 2018

[Part 1] Arduino Data Logger

This is the first post in a series in which I'll document the development of an Arduino-based data logger. The requirements for this data logger are:
  • Data to be logged is a 4-20mA current loop signal (2-wire) from a sensor (using 4-20mA for analogue measurement is an industrial automation standard);
  • Sensor requires a 24VDC supply (I'll be using a 240VAC-to-24VDC transformer plug pack to provide the 24VDC so there will be no mains supply work required);
  • Whole system to be contained in a box that can be sealed up and made "weather-proof".

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