Design Of A Potential Difference Measuring Instrument Using A Capacitive Sensor Based On Atmega328 Microcontroller
Abstract
A potential difference measuring instrument was made using a capacitive sensor based on ATmega328 microcontroller. The design instrument consists of two (2) silver plates as electrodes, INA219 module, Arduino Nano module, LM2596 module, Organic Light-Emitting Diode (OLED) and 9V 1A (DC) adapter. The method the instrument works is the input, namely the adapter and electrolyte solution as a source of electrical energy, and the capacitive sensor as the electrode, namely the anode and cathode. The input data is processed by Arduino Nano ATmega328 with output displayed on OLED and in excel software using PLX-DAQ software. The instrument has been calibrated with standard electrode, namely Hanna HI 5414 reference electrode. Calibration was carried out by comparing the measurement results of the design instrument with a standard instrument with a voltage measurement accuracy of 99.82%, which indicates a good level of accuracy compared to the standard instrument.
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References
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