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The Soil Moisture Sensor uses capacitance to measure the water content of soil (by measuring the dielectric permittivity of the soil, which is a function of the water content). Simply insert this rugged sensor into the soil to be tested, and the volumetric water content of the soil is reported in percent.



Consists of two probes which are used to measure the volumetric content of water.

The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value.

More water, the soil will conduct more electricity which means that there will be less resistance.



Operating voltage: 3.3V-5V

Sensitivity adjustable.




Landscape irrigation


Package Included: 1* Soil Moisture Sensor - Hygrometer Module


#soilsensor #soilhumidity #soilmoisture



Receiver Model:MX-05V




Sensitivity: ¼?105DB

Antenna:32CM single core wire,heliciform shaped


Transmitter: Model:MX-FS-03V

Transmitter distance:20-200Meters(influenced the voltage)



Working mode:AM

Transmitter speed:4KB/S

Transmitter power:10mW


Attenna:25cm Single core wire or mutil-core wire  

Pin arrangement: left-right

Package Include: 1 * 433M Wireless Transmission Module


#433M #Super #Regeneration #Module #Wireless #Transmitter #Module #Burglar #Alarm #Transmitter #Receiver


5A constant voltage constant current step-down module with voltage and current power display LED drive lithium battery charging with crystal case.

With USB interface, with 3 major functions, to meet your most occasions!


Module highlights:

Onboard voltage, current, power meter, you can easily use this module without a multimeter.  

Onboard USB interface, you can easily charge your digital products. (Note: The USB output voltage is the same as the module output voltage, not a fixed 5V output. Please confirm before charging the USB device)  

High power, high efficiency, 5A, low ripple.

It has two modes of constant voltage and constant current, with indicator light to indicate which mode the module is in.

When used as a lithium battery charger, you can set the floating charging voltage and charging current. Indicates whether it is charging or fully charged. 

With current limiting protection function, even if the output is short-circuited, the module will not be damaged.

The onboard voltage and ammeter can be self-calibrated, which avoids the inaccurate reading of the voltmeter! 


Three major functions:

(1) Used as a common step-down module with overcurrent protection capability;

(2) Used as a charger for lithium batteries, batteries, nickel-cadmium-nickel-metal hydride batteries (battery packs) of various voltage values, for solar panels, wind generators, etc.

(3) Used as a high-power LED constant current drive module. 



The input ground and output ground of the module should not be shared together. This will cause the module's current sampling resistor to bypass, which will make the module unable to adjust the output current. It is easy to burn the module when it is connected to the load.

The output terminal of the module is connected with a current sampling resistor. After connecting the load, there will be a voltage drop of 0 ~ 0.2V, which is normal.

Some customers report that the module output voltage cannot be adjusted. When you encounter this problem, please rotate the potentiometer counterclockwise more than 10 times before using the module to adjust the voltage normally. Because when the module leaves the factory, the default output voltage is 17V.

When the output exceeds 3A and 35W, please strengthen the heat dissipation!


#5A #constant #voltage #current #buck #module


PCA9685 16 Channel 12-bit PWM Servo Driver-I2C Interface Module for Raspberry Pi Shield Module for DIY Kit


1. This is a I2C communication, built-in PWM driver and a clock. This means that this will be very different from the TLC5940 series.

2. You don't need to constantly send signals to occupy your MCU.

3. It's 5V compatible, which means you can also use a 3.3V microcontroller to control and drive safely to 6V output (when you want to control white or blue lights with 3.4 + positive voltage is also possible) 6 address selection pins allow you to hang 62 drive boards on a single I2C bus, with a total of 992 PWM outputs.

4. That will be a huge resource. About 1.6Khz can be FM PWM output for stepper motor output 12 bit resolution.

5. This means that the update rate at 60Hz can reach 4us resolution with configurable push-pull or open-circuit output enabling pins to be quickly disabled.



Frequency: 40-1000Hz.

Channel number: 16 channel.

Resolution: 12 bit.

Voltage: DC 5-10V

Size: 60*25mm

Color: blue

Package Included: 1 x PCA9685 16 Channel 12-bit PWM Servo motor Driver I2C Module For Arduino Robot


#16channelmodule #driveri2cinterfacemodule #arduino #12bitpwm #pca9685module #raspberry #diycraft #Module #raspberrypi #modulearduino #interfacemodule #pwmdriveri2c #pimoduleshield #16channel #moduleraspberrypi #module12bit #raspberrypimodule #Accessories



OLED 1.3 inch is a monochrome graphic display module with a built-in 1.3 inch, 128X64 high-resolution display. OLED 1.3 inch is able to work despite the absence of backlight. In a dark environment, contrast of OLED display is higher than LCD display. This device is I^2C or SPI compatible. Due to its capability in displaying, it is often used in various application for instances, smart watch, MP3, function cellphone, portable health device and many others.



-Working Voltage: 3.3V (suggested)

-Compatible Interfaces: I^2C or SPI

-Low power consumption, 0.06W when working normally

-Working temperature: -30ᵒC to 70ᵒC


Package Include: 1* OLED Display 12864 LCD Module


#OLED #Display #12864 #LCD #Module


Description :

The 8 Way relay can trigger high voltage, high current load such as Motor, Lamps , AC load.

It can control by microcontroller such as PIC, Arduino , Rasperry Pi , NodeMCU and more.

The Relay board inside build in 8units of Opto-Isolator IC 817C.


Specification :

- Digital 5V Output controllable.

- 10A Maximum Current

- Maximum Voltage : 250v AC / 30v DC

- Package Included: 1* 8 Channel Way Opto Isolator 5V Relay Module


#Relay #Module



The EasyDriver is a simple to use bipolar stepper motor driver that supports microstepping. It can be used to control 3-axis CNCs, robots, home appliances, etc. It's compatible with any source that can output a digital 0 to 5V pulse (or 0 to 3.3V pulse if you solder 3/5V pads). Board is powered by 7V to 30V supply to power stepper motors with any voltage. It has an on board voltage regulator for the digital interface that can be set to 5V or 3.3V. Connect a 4-wire stepper motor and a microcontroller and you've got a precision motor control. EasyDriver drives bipolar motors, and motors wired as bipolar. I.e. 4, 6, or 8 wire stepper motors.

This is the newest version of EasyDriver V4.4. It provides much more flexibility and control over your stepper motor, when compared to older versions. The microstep select (MS1 and MS2) pins of the A3967 are broken out allowing adjustments to the microstepping resolution. The sleep and enable pins are also broken out for further control. Note: Do not connect or disconnect a motor while the driver is energized. This may cause permanent damage to the A3967 IC.



100% brand new and high quality.


Wire Color: Black, Red (As pictures)

Sharp contact end Compatible with universal multimeters

Maximum current: 10A

Test voltage range: 1000V

Max Cable length : 70cm approx Suit for testing IC components

Package includes: 1pair × Universal 10A Probe Test Leads


#Universal #Probe #Test #Leads #Pin #For #Digital #Multimeter #Meter #Needle #Probe #Wire #Pen #Cable #10A



WeMos D1 WiFi UNO Based ESP8266 shield For Arduino Development board Suitable for IoT Development and prototyping.

Can connect to WiFi for uploading or receiveing data from database. Arduino IDE compatible.

The functioning is similar to NODEMCU, except that hardware is built resembling Arduino Uno.

The D1 board can be configured to work on the Arduino environment.


#WeMos #D1 #R2 #ESP8266 #Board #Development



BH1750FVI is a digital Ambient Light Sensor IC for I2 Cbus interface.

This IC is the suitable for obtaining the ambient light data for adjusting LCD and Keypad backlight power of Mobile phone.

It is possible to detect wide range at high resolution.



Direct digital output, bypassing the complex calculation, bypassing the calibration

Don't distinguish between ambient light

Close to the spectral characteristics of visual acuity

Widely used to 1-lux high precision measurement

Standard NXP IIC communication agreement



Chip: BH1750FVI

Power Supply: 3 - 5V

Light Range:0 - 65535 lx

Sensor Built-in: 16 bit AD converter

Size(L x W): Approx. 3.2cm x 1.5cm


Package Included: 1 * Arduino GY30 Digital Optical Light Intensity BH1750FVI Sensor


Tutorial Datasheet:


Tutorial 1 :


Tutorial 2:



#Arduino #Sensor #Light #GY-30 #BH1750FVI



The GY-BMP280 Barometer Sensor is a breakout board for Bosch BMP280 high-precision and low-power digital barometer.

Used to measure temperature and atmospheric pressure accurately.

Connected to a microcontroller with I2C.

Measure approximate altitude of a place.



Smaller footprint, lower power consumption, lower noise measurements, lower RMS noise.

Higher resolutions for pressure and temperature, higher measuring rate.

Easy-to-use Crowtail Compatible Interface.

Can be used as an altimeter with accuracy of ±1 meter.



Supply Voltage: 3.3V

Current Consumption: 0.6 mA

Barometric Pressure Measure Range: 300 – 1100 hPa Accuracy: ±1.0 hPa

Temperature Measurement Range: -40 to 85

Accuracy: ±1

Interface: I2C

Crowtail Port: I2C

Dimensions: 11.5mm x 15mm

Package list 1* GY-BMP280-3.3 + Header pin


#bmp290 #gybmp280 #atmosphericmodule #pressuresensor