Abbreviation	Meaning
IoT	Internet of Things
pH	Potential of hydrogen
DO	Dissolved Oxygen
TCP	Transmission Control Protocol
MCU	Microcontroller Unit
WSN	Wireless Sensor Network
Wi-Fi	Wireless Fidelity technology
MQTT	Message Queuing Telemetry Transport
STM32	STMicroelectronics 32-bit family of microcontroller chip
I/O	Input/Output
CSI	Camera Serial Interface
Op-Amp	Operational Amplifier
ADC	analog to digital converter
ST	STMicroelectronics
IIC	Inter-Integrated Circuit Bus
SPI	Serial Peripheral Interfaces
USART	Universal Synchronous/Asynchronous Receiver/Transmitter
CAN	Controller Area Network
OLED	Organic Light-Emitting Diode
ECS	Elastic Compute Service
IaaS	Infrastructure as a service
CentOS	Community Enterprise Operating System
JSON	JavaScript Object Notation
FN	File Number
PLR	packet loss rate
DIS	distance
NOP	number of packages
NORP	number of receiving packages
MAE	mean absolute error
MSE	mean squared error
RMSE	root mean square error