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The Water Hall Flow Sensor G1/2 is a hall effect flow sensor with uart designed for liquid metering
Slave or Loopback three different modes(HC-06 just be Master/Slave
2" HAT Mini Kit - 320x240 2
Built-in signal reshaping circuit
MAX7219CNG LED Matrix/Digit Display Driver mq135 The Water Hall Flow SensorBuild Scrolling Text and Pixel Effects with MAX7219CNG LED Matrix Digit Display Driver MAX7219 The MAX7219CNG LED Matrix Digit Display Driver MAX7219 is made for visual effects, counters, symbols, pixel graphics, and animated display projects. It is useful when you want more visual freedom than a single LED or simple segment display. LED matrix modules are a great fit for signs, dashboards, score displays, and animation work. They can also add a fun
