Gravity: Analog TDS Sensor/ Meter for Arduino

The meter built on the basis of a water rotor and a Hall effect sensor
Please note this is not a Accuracy. Pulse rate varies slightly depending on flow rate, fluid pressure, and sensor orientation. Water Flow Sensor 1-30l /Min YF-S201 features:
- Working voltage range: DC 5 ~ 18 V
- Allow pressure: water pressure below 1.75Mpa
- Accuracy (flow-pulse output): ± 1 ~ 30 l / min
- Use temperature: ‰ ¤ 80 ° C
- Load capacity: ‰ ¤ 10 mA (5Vdc)
- Operating humidity: 35% ~ 90% RH (frost free)
- Temperature: -25 ~ + 80 ° C
- Outlet diameter: 1/2 "
- Red wire: positive supply
- Wire Black: negative power supply
- Yellow Cable: signal output
- Color: black
- Size: 6.2x3.6x3.4 cm

Gravity: SHT1x Temperature & Humidity Sensor (DFR0066) Accurate, durable, highly compatible and easy to use, it has all the attributes that a superior temperature and humidity sensor requires.

Micro:bit Tinker Kit - Create a variety of octopus sensors thanks to the Tinker kit and the many project tutorials to help you create dozens of amazing digital maker projects. Note: the micro:bit board is not included, you can buy it separately. All modules have convenient connectors to use them and no soldering is required.

The Microbit Starter kit has provided 24 types of electronic components to help you get started. Micro:bit Starter kit can help your children enter a wonderful electronic world. Note: the micro:bit board is not included, you can buy it separately.

The RETRO Arcade for Education is the first large-screen arcade device with high resolution. Children can use it to fuel their creativity by easily creating their games while having fun playing.

Mini electricity generator, built base on a turbine and an electric generator that converts kinetic energy into electricity. The generator output is rectified and regulated for a maximum of 12V. Please note -if we want to generate more current, the turbine will oppose the greater resistance to the flow of water, and the voltage may drop if the water flow is not sufficient. This generator is made of plastic and the turbine is totally isolated from the generator and rectifier, the outputs are 1/2 "usually found in domestic pipes.

NEZHA inventor kit for micro:bit develop your imagination and creativity with the Nehza 36-in-1 kit for micro:bit.

With the micro:bit Smart Health Kit you will build items such as UV light detections, sitting posture reminder, alcohol detector, smart bin and more, from which we can learn how to program and how to maintain healthy living habits in a scientific way.

With the Smart City Kit you will learn more about the IoT, the software, and the possibilities of future city scenes that are able to be built through it. You will be able to build topics such as smart parking, transport network, river level monitoring...

ELECFREAKS Smart Science IoT Kit is developed on the basis of loT:Bit, a new breakout board compatible with ultrasonic sensor, dust sensor, light sensor and water level sensor, including RTC Timing and WIFI module. It can build the scene such as air quality monitoring, environmental noise detection, environmental quality monitoring station, automatic watering detection, self-defence monitoring station and more.