This won’t work correctly, though: the microcontroller on the watch is very good at getting the power it needs from anywhere, and connecting it directly to an Arduino would skew the results.

A data logger built on using the adafruit Datalogging Arduino Shield on an Arduino Mega 2560 R3. 3 types of different units can be measured right now: Current, Voltage, Temperature.

This simple-ish device takes a voltage reading at Arduino pin A0, and logs it to EEPROM with a timestamp from a DS3231 RTC module. When you press the button, all stored data will be written to UART at ...

The Mayfly Data logger is a fully programmable microprocessor board which is fully compatible with the Arduino IDE and is equipped with a Atmega 1284p processor supported by 128K flash memory and ...

Build Your Own Arduino Voltmeter Circuit and Voltage Divider Which Can Measure Voltages From 0V to 30V, Including 12V. Visit To learn More.

If you use the analog inputs of your favorite microcontrollers, sooner or later you have needed to check their linearity and accuracy over the entire range of input values. This precise and compact ...

This project is a great example. [Scott Daniels] takes a look at the other voltage measurement options available to AVR chips used by Arduino.

Here is the Arduino Data Logger Project covered with circuit diagram and code to learn how we can log temperature and humidity to SD card at a specific interval of time.

The extendable Arduino GPS data logger consists of a shield that is fitted with the GPS receiver, SD card reader, and accelerometer, together with an Arduino UNO board. This combination of ...