Supports up to 8 IO lines configured via SW. Each pin can be configured either as Digital Input or Digital output individually. Sample of digital sensor: pressure switch, level switches, buttons, limit switches, outputs to control relays etc. Can be used for communication with third party MPU/smart subsystems. Supports 3.3V and 5V logic.
Supports 4 Configurable Analog inputsI 0-30V 1.1mV precision or 0-40mA 0.1mA precision. Sample of Analog sensor: temperature, pressure, humidity, accelerometer, hall effect/magnetic Sensor (position sensor), sound sensor, air quality, light, flame, gas, heartbeat etc.
Bluetooth Low Energy (BLE)
BLE is a wireless personal area network technology aimed at novel applications in the healthcare, fitness, beacons, security, and home entertainment industries. BLE extends Classic Bluetooth the area of applications thanks to reduced power consumption and cost while maintaining a similar communication range.
I2C (Inter-Integrated Circuit)
I²C interface, known for its simplicity is used for low cost, low speed peripheral. Sample of I²C sensors: pressure, temperature, IR temperature, accelerometer, compass, RGB color, gyroscope, ToF range finder, ultrasonic range finder, digital I/O expander and other devices.
The Dallas 1-Wire interface shares the concept of simplicity and low cost with I²C, but with lower data rates and longer range. It is typically used to communicate with small inexpensive devices such as digital thermometers and weather instruments. Sample of 1-Wire sensors: temperature, iButton.
The protocol is most supported by hydrographic sensors (level and flow), water quality sensors, meteorological instruments, soil moisture and plant physiology. Sample of SDI-12 sensors: temperature and humidity of soil, wind, rainfall, water and air quality etc.
RS-485 signals are used in a wide range of automation systems. E.g. It is used in building automation since the simple bus wiring and long cable length is ideal to connect big number of remote devices communicating at relatively low (up to 1Mb) speed.