SDA: I²C data
Reset) Interface Parallel (4-bit) Pinout & usage notes
A real-time clock (RTC) keeps the time going even when the Arduino is unplugged
open-source software that supports a wide range of boards
ISO 15693 and ISO 18000-3 mode 1 compatible
Atlas Scientific EZO EC Conductivity Circuit sim800c SDA: I²C dataThe Atlas Scientific EZO Conductivity Circuit is a compact embedded module for reading electrical conductivity, total dissolved solids, salinity, and seawater specific gravity. It is a great choice for water quality systems, hydroponics, aquaponics, lab builds, dosing systems, and automated monitoring projects. This circuit gives your Arduino, Raspberry Pi, ESP32, or custom controller access to reliable conductivity data without building the analog