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XTW6009 is a high-performance 400KHz 4A switch currency step-up (BOOST) module.

This module XL6009 is coming with the 3rd generation high-frequency switch technology as the core chip, The performance is much higher than LM2577.

Wide input voltage: 3V~32V.

Optimum operating voltage range: 5~32V.

Wide output voltage: 5V~40V.

With 4A high efficiency MOSFET switches, so the efficiency can be up to 94%, (LM2577current is 3A only).

With ultra high switch frequency 400KHz , even if small capacity filtering capacitors can achieve very good results, ripple is smaller (Compare to LM2577 frequency 50KHz).

#Arduino #XL6009 $DC-DC #Adjustable #Step-up #Voltage #Booster #Module #4A #Solar #Voltage #Board



NEW NodeMCU V3 Lolin is a fast leading edge low cost WiFi technology Power your developement in the fastest way combinating with NodeMcu Firmware Modern high level mature LUA based technology.

NodeMcu Lolin V3 WIFI Internet development board based on ESP8266 NodeMCU Lolin V3 ESP-12E

-The ESP-12 is outdated.

-ESP-12E and ESP-12F today are the all days ESP.

Modern Internet development tools such as Node.js can take advantage the NodeMCU with the built-in API to put your idea on the fast track immediately.

It is an integrated unit with all available resources on board.

It is super simple to complement your existing Arduino projects or any development board that has I/O pins available.

Arduino-Like Hardware IO.

Code like Arduino, but interactively in Lua script.

Event-driven API for network applications, which facilitates developers writing code.

Integrates GPIO, PWM, IIC, 1-Wire and ADC all in one board.

10 GPIO, every GPIO can be PWM, I2C, 1-wire.

4M Flash Memory.

Built-in WiFi Antenna


#nodemculolin #lolin #esp12v3 #nodemcu #esp8266 #wifimodule #nodemcuv3 #nodemculolinv3



PAM8403 is a 3W, class-D audio amplifier.

Offers low THD+N allowing it to achieve high-quality sound reproduction.

New filterless architecture allows the device to drive the speaker directly. 

Requiring no low-pass output filters.

Saving system cost and PCB area.

Efficiency of the PAM8403 is much better than that of Class-AB cousins.

Can extend the battery life, which makes it well-suited for portable applications.


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


Specification Material: Glass-fiber

Hole diameter: 1 mm +/- 5%

Holes distance: 2.54 mm

Thickness: 1.6 mm



Setting 3.3V and 5.0V output (this is the power to the microcontroller, the need to upgrade the machine) Please pull out the small plate from the computer, set the jumper to take, do not charge it to avoid damage to the device.


Pin connection and description:

Connector pin assignments before you must find, especially GND must not be connected to the voltage pin, and RX and TX side do not connected to the VCC pin, the (actual measurement had some VCC pin voltage up to 14V.) Wrong shall be burnt chip adapter cable, be sure to note, do not take their own small board to do the experiment, otherwise we are not responsible for any burn. We must find a good pin definitions in the access. Connection method: Again Brush only need three lines, generally used only RX TX GND three signal lines, VCC no connection. The above is 4,5 needles friends, not to VCC and BT needle. Please use the RXD and target board TX phase, TXD and target board RX phase, GND connection GND, if not, were reversed RX and TX.


RX for TX;

TX to RX;

Ground-ground (GND to GND)


USB to serial platelet function:

1 simple serial communication.

2 or ADSL router firmware upgrade.

3 GPS serial communication.

4 hard drive firmware upgrade.

5 easy to use, RX received the MCU TX; TX RX received at the MCU connected to ground. Without the need for conversion MAX232.

6 Super Terminal in use; common serial debugging tools.

7 upgrade with a variety of satellite machine.


#PL2303HX #TTL #RS232 #PL2303 #raspberrypi #arduino #microbit


- High Quality

- Universal Cap



Arduino robot Kit, rain, rain sensors, monitoring can be used in various weather conditions, and go into several signal and the AO output. Sensor using high quality material on both sides, oversized 5.0*4.0CM, with nickel plated surface against oxidation, electrical conductivity, and life more superior performance.

Comparator output signal clean wave good driving ability, than 15mA;

Power adjust sensitivity;

Rated voltage and 3.3V-5V Output: digital switching output (0 and 1) and AO analog voltage output;

With fixing bolt holes for easy installation

Small Board PCB dimensions: 3.2cm x 1.4cm Using wide LM393 voltage comparator



Connected to 5V power supply, power light is on, when there is no water droplets on the induction plate, DO output is high, the switch light is off, and drops on a drop of water, DO for low-level output, switch light is on.

Brush away water drops, but it returned to output high level State.

AO analog outputs, to connect to SCM AD size detection of rainfall over it.

DO TTL digital output can be connected to microcontroller detects rain.


Connection mode:

VCC: supply cathode (3-5V)

GND: connect to power negative

DO:TTL switch signal output

AO: analog signal output


Package includes: 1x Rain Sensor Module + 1x Female to female 2p jumper wire


#Rain#Sensor #Module



This is a microwave radar motion sensor module which is used to detect motion and object in 360 degrees with no blind spot.

#RCWL-0516 #microwave #radar #sensor #module #Human body #induction #switch module #Intelligent #sensor


Description for Li-Ion Battery:

Lithium Type: Li-Ion Battery

Battery : 18650 Battery

Type : Flat head

Mark Capacity: 1200mAh / 2000mAh / 3000mAh

Nominal Voltage: 3.7v

Rechargeable Battery: Yes

Rechargeable Time: Up to 500 times

Usage: Flashlight, LED, Laser Pen, Headlamp, Laser Torch, E-Book, E-cigarettes 

Package Included: 1pcs 18650 Rechargeable Battery


#rechargeable #battery #charger #18650 #lithium #Li-Ion


Saft LS14250 3.6V 1/2AA PLC ER14250 14250 Lithium Battery 1200mAH



Name: SAFT

Origin: France

Model specifications: LS14250

Nominal voltage: 3.6V

Nominal capacity: 1.2Ah

Dimensions (mm): Maximum diameter 14.55 × Maximum height 25.15

Recommended maximum continuous discharge current: 35mA

Storage temperature: up to 30 degrees Celsius

Working temperature: -60~+85 degrees Celsius


Product advantages:

High density, high capacity, low self-discharge rate, wide temperature range and good durability.

Scope of application: CNC machine tools, servos, programmers, PLC, CNC, injection molding machines, printing machines, touch screens, electricity meters, water meters, real-time clocks, backup memory power supplies, various measuring instruments, special electronic equipment

Product Included: 1 x Saft LS14250 1/ 2AA 3.6V PLC Industrial Lithium Battery


#saft #er14250 #battery #lithium


The SG90 mini servo is lightweight, high-quality and lightning-fast.

Compatible with any servo code, hardware or library.

Servo motors comes with three wires: power, ground, and signal.

Operating Voltage ~5V.

Good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it will fit in small places.

#sg90 #towerpro #servosg90 #sg90180 #servotowerpro #servo #towerprosg90 #RCforRC #250 #450 #Helicopter



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


This soil moisture sensor measures soil mositure levels by capacitive sensing rather than resistive sensing like other sensors on the market.

It is made of corrosion resistant material which gives it an excellent service life.

Insert it in to the soil around your plants and impress your friends with real-time soil moisture data!

This module includes an on-board voltage regulator which gives it an operating voltage range of 3.3 ~ 5.5V.

It is perfect for low-voltage MCUs, both 3.3V and 5V.

For compatibility with a Raspberry Pi it will need an ADC converter.

This soil moisture sensor is compatible with our 3-pin "Gravity" interface, which can be directly connected to the Gravity I/O expansion shield.



Gardening & Farming

Moisture Detection

Intelligent Agriculture



Operating Voltage: 3.3 ~ 5.5 VDC

Output Voltage: 0 ~ 3.0VDC

Operating Current: 5mA

Interface: PH2.0-3P

Weight: 15g

Package List: 1 * Capacitive Soil Moisture Sensor

#Soil #Moisture #Sensor #Corrosion #Resistant #Capacitive #Wide #Voltage #Garden #Watering #Control #DIY #Plant #Switch