Recent readings from a sensor, such as saving the last few measurements so that these can be recovered if the power is lost.Some of the ways I’ve seen this used include: Using EEPROM on an Arduino is generally a good idea when you have an unreliable power supply and need to quickly save small amounts of data to protect against power failure. EEPROM costs nothing to use if it’s included with your Arduino (see FRAM below if your board doesn’t have EEPROM). Think of EEPROM as a tiny flash drive built in to your Arduino. This means that data saved to the EEPROM can be read using a sketch even after the Arduino has been turned off and turned back on. EEPROMĮEPROM is a section of memory that is safe when the Arduino loses power. If your project involves working with data in any way, check out my complete guide here: /analyze-data-using-arduino/ 1. I wrote this guide as part of a series on Arduino data analysis. To analyse data on another device, try storing the data in the cloud.To collect data over a long time that will be shared with a computer, try an SD card.To store small amounts of data, such as recent measurements, try the EEPROM.The best ways to store data depend on your project: Ways Arduino can store data collected from sensors
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