Atlas Scientific EZO EC Conductivity Circuit sim800c This keeps the pin layout

This keeps the pin layout intact and allows another shield to be stacked on top

SDA: I²C data

Reset) Interface Parallel (4-bit) Pinout & usage notes

Product Tamiya 72002 High-Speed Gearbox Kit Brand Circuitrocks Product Type Kit Primary SKU POL71 Key Specs high torque Product URL https://circuit

The NeoPixel Ring - 12 x 5050 RGBW LEDs w/ Integrated Drivers - Natural White - ~4500K is an addressable LED product made for colorful effects

Atlas Scientific EZO EC Conductivity Circuit sim800c This keeps the pin layoutThe 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