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<p>This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This fixed regulator provides a local regulation, internal current limiting, thermal shut-down control, and safe area protection for your project. Each one of these voltage regulators can output a max current of 1.5A.</p>
<ul><li>Output Voltage: 5V</li><li>Output Current: 1.5A</li><li>Thermal Overload Protection</li><li>Short Circuit Protection</li><li>Output Transition SOA Protection</li></ul>
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Voltage Regulator 5 V Linear

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<h2><b>Photosensitive Resistor</b></h2>
<p>A high-quality LM393 voltage comparator is used in this Photosensitive Resistor Dependent Control Sensor Module. The comparator output signal produces a clean and excellent waveform when employing the sensitive type photosensitive resistance sensor.</p>
<p>With a 15mA driving capability and an adjustable potentiometer, the brightness of the light detected may be adjusted. The working voltage ranges from 3. 3 to 5 volts. Where output refers to the output of a digital switch. Because this module is light-sensitive, it is commonly used to detect ambient brightness and light intensity.</p>
<p>DO output is at a high level when there is no light or when the light intensity cannot achieve the value. The module DO output is low when the light intensity exceeds the value. The module's digital output DO can be directly connected to a microcontroller, which can detect high or low levels, allowing it to monitor changes in ambient light intensity.</p>
<p>You can use this board as a photoelectric switch or as a digital output DO port driving relay module (our store sells these relay modules). The analog output is connected to the ad module, which uses the ad-converter to obtain a more precise light intensity value.</p>
<h3><b>Pin for the interface:</b></h3>
<ol><li>+Ve power supply (VCC).</li><li>GND stands for "Ground."</li><li>D0 refers to the digital output signal.</li><li>A0 stands for Analog Output Signal.</li><li>Strong light, LED light, modest output.</li><li>The light is dim, the LED is turned off, and the output is set to a high level.</li><li>The sensitivity can be changed.</li></ol>
<h3><b>Specifications:</b></h3>
<ol><li>LDR module 4 PIN</li><li>Operating voltage 3.3V-5V</li><li>Signal output indicator light.</li><li>LDR module 4 PIN</li><li>Able to detect ambient brightness and light intensity Adjustable sensitivity (via blue digital potentiometer adjustment)</li></ol>
<h3><b>Features:</b></h3>
<ol><li>It comes with a Mounting Hole Screw.</li><li>Easy to install</li><li>Signal output indicator light.</li><li>LDR module 4 PIN</li><li>Able to detect ambient brightness and light intensity Adjustable sensitivity (via blue digital potentiometer adjustment)</li><li>Output: DO digital switch output (0 and 1), AO analog voltage output Compatible with Arduino, Raspberry, and other microcontroller boards.</li></ol>

Photosensitive Resistor

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<h2><b>Flame sensor</b></h2>
<h3><b>Features </b><b>Flame sensor</b><b>:</b></h3>
<ol><li>High quality: 100%, new high quality.</li><li>High-quality materials: Made of high-quality materials, safe and durable, high-temperature resistance.</li><li>Low power consumption: easy to control, more stable, high sensitivity, high efficiency.</li><li>Easy to install: Small size, more stable performance, and simpler installation.</li><li>Wide use: It can be used in product core and development and learning, suitable for course design, and so on.</li><li>Small size, more stable performance, suitable for assembly, and installed in a variety of small equipment.</li><li>Wide use: It can be used in product core and development and learning, suitable for course design, and so on.</li></ol>
<h3>Specification:</h3>
<ol><li>Item No.: 21934</li><li>Material: metal + electronic device</li><li>Color: red</li></ol>
<h3><b>Package included:</b></h3>
<p>1 x KY-026 Flame Sensor Module</p>
<h4><b>Notes:</b></h4>
<ol><li>Please allow 0-2mm error due to manual measurement, thanks for understanding.</li><li>Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you!</li></ol>

Flame sensor

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<h2><b>DS1302 Real-Time</b></h2>
<p>A real-time clock/calendar and 31 bytes of static RAM are included in the DS1302 timekeeping chip. It uses a simple serial interface to communicate with a CPU. The real-time clock/calendar displays information in seconds, minutes, hours, days, dates, months, and years. For months with fewer than 31 days, the end of the month date is automatically modified, including leap year corrections. The clock has an AM/PM indicator and works in either a 24-hour or 12-hour mode. Using a synchronous serial connection to connect the DS1302 to a microprocessor simplifies the operation. To connect with the clock/RAM, only three wires are required: CE, I/O (data line), and SCLK (serial clock).</p>
<p>Data can be sent one byte at a time or in bursts of up to 31 bytes to and from the clock/RAM. The DS1302 is designed to run on extremely little power, requiring less than 1uW to preserve data and clock information. DS1302 is DS1202's successor. The DS1302 contains dual power pins for primary and backup power supply, a programmed trickle charger for VCC1, and seven additional bytes of scratchpad memory in addition to the basic timekeeping functionality of the DS1202.</p>
<h3><b>Specification:</b></h3>
<ol><li>Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100</li><li>31 x 8 Battery-Backed General-Purpose RAM</li><li>Serial I/O for Minimum Pin Count</li><li>2.0V to 5.5V Full Operation</li><li>Uses Less than 300nA at 2.0V</li><li>Single-Byte or Multiple-Byte (Burst Mode)</li><li>Data Transfer for reading or Write of Clock or RAM Data</li><li>Simple 3-wire interface</li><li>TTL-Compatible (VCC = 5V)</li><li>Optional Industrial Temperature Range: -40°C to +85°C</li><li>DS1202 Compatible</li><li>Supplied with CR2032 battery</li></ol>

DS1302 Real-Time

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<h2><b>temperature sensor lm35</b></h2>
<p>The module with analog temperature sensor LM35. Powered with a voltage of 5 V. It can read the temperature in the range from -55°C to 150°C with an accuracy of up to 0.5°C.</p>
<h3><b>Connection </b></h3>
<p>The sensor works with any microcontroller that has analog inputs, including Arduino. To read data, it is sufficient to connect the power source and output pins to any input of the microcontroller and read its status.</p>
<h3><b>Specifications</b><b> lm35</b><b>:</b></h3>
<ol><li>Supply voltage: 5 V</li><li>Output: analog</li><li>The temperature measurement range: -55°C to 150°C</li><li>Measurement accuracy: 0.5°C</li><li>Pins: 3-pin</li><li>Dimensions: 25 x 15 mm</li></ol>

LM35 Temperature Sensor

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<h2><b>Relay module 1 channel</b></h2>
<p>A Relay module 1 channel is a digital switch that allows you to control far larger voltages and currents than other Arduino boards. Depending on your wiring, the relay will flip to enable current to flow or cutoff when a logic voltage is entered. A coil, one common terminal, one generally closed terminal, and one normally open terminal make up a relay. The common terminal and the normally open terminal will have continuity when the coil is powered.</p>
<p>Why are we using a relay, and do we actually need one? You'll need a relay to turn on or off a device that uses a lot of currents or operates at a high voltage, such as headlights, parking lights, horns, and so on.</p>
<h3><b>Specifications Relay module 1 channel:</b></h3>
<ol><li>The supply voltage VCC: 5 V</li><li>Activated with low state</li><li>Relay JQC-3FF-S-Z (documentation)</li><li>Parameters of contacts for resistive load:</li><li>125VAC / 15 A</li><li>250 VAC / 10 A</li><li>250 VDC / 7 A</li><li>Opto Isolation EL817 (documentation)</li><li>The dimensions of the board are 53 x 28 mm</li><li>Diameter of mounting holes: 3 mm</li></ol>
<h3><b>Examples of application:</b></h3>
<ol><li>Driver of lighting</li><li>The driver of actuators</li><li>Switch for electric devices, including motors</li></ol>
<h3><b>Connection:</b></h3>
<p>The module has three input leadsVCC, GND, IN. For the system to work correctly, you must connect the power supply 5 V to the VCC pin, ground GND and the input signal IN.</p>
<p>Output leads are described as NO - disabled by default, NC - connected, by default, with COM. Indicating the low status on the IN pin, switches the relay and makes the connection between the COM and NO, disconnecting the COM from NC.</p>

Relay module 1 channel

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<h2><b>NodeMCU ESP8266</b></h2>
<p>The NodeMcu ESP8266 is an open-source firmware and development kit that allows you to prototype your IoT product in just a few lines of Lua script. It offers a sophisticated hardware IO API that can drastically minimize the amount of time spent configuring and manipulating hardware. Code in Lua script, but interactively, like Arduino. Event-driven API for network applications that allows developers to write Nodejs-style code that runs on a 5mm*5mm MCU. Can considerably accelerate the development of IoT applications.</p>
<p>The ESP8266 Development Kit includes GPIO, PWM, IIC, 1-Wire, and ADC on a single board. Combine NodeMCU Firmware with NodeMCU Firmware to accelerate your development!</p>
<h3><b>SPECIFICATIONS:</b></h3>
<ol><li>USB-TTL included plug&play</li><li>10 GPIO, every GPIO can be PWM, I2C, 1-wire</li><li>FCC CERTIFIED WI-FI module Coming soon）</li><li>PCB antenna</li></ol>
<h3><b>Dimensions:</b></h3>
<p>PCB: 48.3 x 25.8 x 5mm</p>
<p>With Pin Headers: 50 x 25.8 x 12.5mm</p>

NodeMCU ESP8266

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<h2><b>I2C Serial Adapter</b></h2>
<p>This is an I2C Serial Adapter LCD Daughter board that is RoHS compliant and can be linked to a normal 162- or 204-Character Display Module that supports 4-bit mode. 4-bit mode is supported by all Character Modules supplied on our site, as well as practically all commercially available 162 and 204-line character modules.</p>
<p>The PCF8574 I2C chip on this board translates serial I2C data to parallel data for the LCD display. There are numerous examples of utilizing this board with Arduino on the internet. Look for "Arduino LCD PCF8574" in the search engine. The I2C address is set to 0x3F by default, but three solder jumpers on the board allow you to change it. This allows you to manage up to three LCD monitors from a single I2C bus.</p>
<h3><b>Specifications:</b></h3>
<ol><li>5V power supply</li><li>Serial I2C control of LCD display using PCF8574</li><li>Backlight can be enabled or disabled via a jumper on the board</li><li>Contrast control via a potentiometer</li><li>Can have 8 modules on a single I2C bus (change address via solder jumpers) address, allowing</li><li>Size ：41.6 x 19.2 mm</li></ol>

I2C Serial Interface Adapter Module

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<h2><b>LCD 16*2 green</b></h2>
<p>You may make an alphanumeric LCD 16*2 green display using only the Raspberry Pi. It has two lines of value, each with 16 characters. is powered by 5 volts. stands out for its ease of use, excellent availability, and wide range of microcontroller support options. The characters are shown on a green background. The module comes with the soldered connectors needed to connect it to the Arduino.<br> <br><strong>There are 12 pins on the Alphanumeric display that are not marked on the board. Each one correlates to the following:</strong></p>
<ol><li>VSS - system ground</li><li>VDD - 5V power supply</li><li>V0 - contrast</li><li>RS - select display instruction register (low state) or data register (high state)</li><li>R/W - read (low state) / write (high state)</li><li>E - unlocking the display</li><li>(7-14) DB0...DB7 - data bus</li><li>LEDA - backlight power supply 5 V</li><li>LEDK - backlight system common ground.</li></ol>
<h3><b>Technical specification of the display</b></h3>
<ol><li>Type: alphanumeric LCD display</li><li>Supply voltage: 5 V</li><li>Controller compatible with HD44780</li><li>Backlighting: black characters</li><li>Green background</li><li>Operating temperature range: from -20°C to 70°C</li><li>Dimensions of one character: 2.45 x 5 mm</li><li>Module dimensions: 80 x 36 mm</li></ol>
<h4><b>Note:</b></h4>
<ol><li>The real color of the item may be slightly different from the pictures shown on the website caused by many factors such as the brightness of your monitor and light brightness.</li><li>Please allow slight manual measurement deviation for the data.</li><li>More Colors on Black 80X36 1602 162 Character LCD Module Display Screen SPLC780D</li></ol>

LCD Display 16x2 (Green Backlight)

<p>BIQU Brass Diamond Extruder Reprap Hotend 3D V6 heatsink 3 IN 1 OUT Multi Nozzle</p>
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BIQU Brass Diamond Extruder Reprap Hotend

TB6600 Stepper Motor Driver 4A

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<p>1 Set Infrared Remote Control IR Receiver Module Kit DIY HX1838 For Arduino Raspberry Pi Remote Control RC Toy Robot Car Model (IR Transmitter + IR Receiver) (Infrared Wireless Remote Control Kit)</p>
<p>Infrared wireless remote control kit consists of Mini Slim 38KHz IR remote control and infrared receiver modules. This s suitable for both Arduino and Raspberry Pi.</p>
<p><strong>Description</strong>
Infrared communication is a common, inexpensive, and easy to use wireless communication technology. IR light is very similar to visible light, except that it has a slightly longer wavelength. This means IR is undetectable to the human eye – perfect for wireless communication. For example, when you hit a button on your TV remote, an IR LED repeatedly turns on and off, 38,000 times a second, to transmit information (like volume or channel control) to an IR photo sensor on your TV.</p>
<p>This Mini Slim remote control provides 17 function keys with firing distances of up to 8 meters. IR receiver module can receive standard 38KHz modulation remote control signal, through programming, you can achieve remote control signal decoding operation.</p>
<p><strong>Features</strong></p>
<ul><li>CR2025 green button battery capacity 160 mAh</li><li>Transmission Distance: 8m above (specific and surroundings, the receiver sensitivity and other factors)</li><li>Effective angle: 60 degrees</li><li>Quiescent current 3-5uA, dynamic current 3-5mA</li></ul>