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125KHz Black USB Proximity Sensor Smart rfid Card Reader EM4100,EM4200,EM4305,T5577,or compatible cards/tags no driver needed (125KHz usb reader)
1 x RFID ID Card Reader1 x USB cable
Resources
Specifications
- Support EM4001, EM4100, EM4200, TK4100 and its compatible RFID ID card
- Frequency: 125KHz
- First 10 digits of the RFID proximity card read.
- Windows95/98/2000/XP/7/8/10/android
- Communication speed: 106Kbit/s
- Power: DC 5V
- Reading distance: 5-8cm
- Interface: USB
- Operation temperature: -10~70 celsius degree
- Storage temperature: -20~80 celsius degree
- Size(L*W*H): 108mm x 78mm x 28mm
- Total Weight: 100g
- Colour: Black
Application
Widely used in entrance guard, consumption, hotel lock, water meter, electricity meter and gas meter and a series of IC card management application systems.
Features
1.Fast in reading the RFID Tags
2.Connects to PC to read the RFID tags and update to the application
What's in the box?
1 x RFID ID Card Reader
Resources
Installation Instructions
1: Connect the USB cable with the card reader to the computer USB port.
2: The reader will 'drip' sound and flash about that power successfully,
and then half a second after the 'drip' sound and flash about that device self-test successfully, without Installing any drivers, windows will automatically recognize it.
3: Open notepad and scan a 125KHz card to test.
RFID Classic 125 khz EM4100/TK4100 watch Silicone Wristband (125khz rfid wrist band)
Whilst being completely portable and convenient, RFID Wristbands give you the freedom to express your business in the way you want to. You can choose not only an enjoyable accessory but an invaluable tool to your organisation.
Typical Application
Specifications
What's in the box?
1 x RFID wristband
Typical Application
Access control for events, concerts, clubs.
Tracking for sports.
Membership management for heath care, childcare, and so on.
- Frequency: 125KHz
- Standard: ISO EM4100 and compatible
- Material: Silicone (100% SGS approved, RoHS, eco-friendly)
- Printing: no logo
What's in the box?
1 x RFID wristband
LCD Keypad Shield LCD1602 LCD 1602 Module Display For Arduino ATMEGA328 ATMEGA2560 raspberry pi UNO blue screen (buttons blue backlight)
Features
What's in the box?
1 X Keypad Shield 1602 LCD
Resources
DFRobot WIKI

- This is a basic 16 character by 2 line display.
- Utilizes the extremely common HD44780 parallel interface chipset.
- Interface code is freely available.
- Blue Backlight with white words.
- uses 4 Bit Arduino LCD Library.
- Size:8cm x 5.9cm - 3.15inch x 2.32inch
What's in the box?
1 X Keypad Shield 1602 LCD
Resources
DFRobot WIKI

50cm XH2.54 4pin to 6pin White Terminal stepper Motor Connector cable (stepper cable 4 to 6pin 55cm)
A collection of jumper cables with XH2.54 connectors on each side. Great for wiring your stepper motor to your driver board. Widely used on 3D printers, robotics and CNC machines.
Specifications
What's in the box?
1 x 3D Printer Stepper Motor Line 50cm Length
Specifications
- Four-lead motor connector XH2.54 white terminal 4pin-6pin motor line
- 3D Printer Stepper Motor Line
- Connector : 4pin to 6pin
- Length: 50cm
What's in the box?
1 x 3D Printer Stepper Motor Line 50cm Length
10pcs LilyPad LED Modules (wearable led's(10))
This is a simple pack of five White LilyPad LEDs that are still attached to one another, letting you snap the LEDs apart at your leisure to sew into clothing or whatever else you can dream up.
Each LilyPad piece was creatively designed with large sew tabs to allow them to be sewn into fabric. Various input, output, power and sensor boards are available.
They're even washable (with special care)!
Specifications
What's in the box?
10 X LilyPad LED Modules
Resources
Each LilyPad piece was creatively designed with large sew tabs to allow them to be sewn into fabric. Various input, output, power and sensor boards are available.
They're even washable (with special care)!
Specifications
- Operating voltage: 3-5V
- Operating current: 40MA
- Weight: 1g (5 by one weight)
- Size: 12.7 mm x 5.2mm x 2.2mm
What's in the box?
10 X LilyPad LED Modules
Resources
LilyPad Power Supply Module AAA Battery Step up to 5V Converter (wearable AAA battery holder)
A small, but mighty power supply. This board was designed to be as small and inconspicuous as possible. Pop in a AAA battery, flip the power switch, and you will have a 5V supply to power your LilyPad circuit. Good up to 200mA. Short circuit protected.
This board has AAA battery clips but can use an input from 1.2V to 5V.
LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They're even washable - but be sure to remove the battery!
What's in the box?
1 x LilyPad Power Supply Converter Module AAA Battery Step up to 5V
Need batteries? You will find our battery selection here
This board has AAA battery clips but can use an input from 1.2V to 5V.
LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They're even washable - but be sure to remove the battery!
What's in the box?
1 x LilyPad Power Supply Converter Module AAA Battery Step up to 5V
Need batteries? You will find our battery selection here
Tri-Colour RGB LilyPad LED Module wearable (wearable RGB module)
Blink any colour you need!
Use the Tri-Colour LED board as a simple indicator, or by pulsing the red, green, and blue channels, you can create any colour. Very bright output.
This is a common anode(positive) design - to turn on a channel you simply need to ground one of the R/G/B pins to illuminate that channel.
LilyPad is a wearable technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They're even washable!
What's in the box?
1 x Lilypad common anode RGB module
Getting started with lillypad tri-color LED
Use the Tri-Colour LED board as a simple indicator, or by pulsing the red, green, and blue channels, you can create any colour. Very bright output.
This is a common anode(positive) design - to turn on a channel you simply need to ground one of the R/G/B pins to illuminate that channel.
LilyPad is a wearable technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. Each LilyPad was creatively designed to have large connecting pads to allow them to be sewn into clothing. Various input, output, power, and sensor boards are available. They're even washable!
What's in the box?
1 x Lilypad common anode RGB module
Getting started with lillypad tri-color LED
LD1117V33 voltage Regulator 3.3 V TO-220 (LD1117V33 Volt Reg)
LD1117V33 is a three terminal linear voltage regulator IC with a fixed output voltage of 3.3V which is useful in a wide range of applications.
A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions.
Specifications
What's in the box?
1 x 3.3 V TO-220 voltage regulator
You might also need a heatsink for your regulator
Resources
Understanding How a Voltage Regulator Works
A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions.
Specifications
- Output Voltage: 3.3 V
- Output Type: Fixed
- Package Type: TO-220
- Maximum Output Current: 1.3A
- Mounting Type: Through Hole
- Maximum Input Voltage: 15 V
- Pin Count: 3
- Number of Outputs: 1
- Polarity: Positive
- Quiescent Current: 5mA
- Accuracy: ±1%
- Minimum Operating Temperature: 0 °C
- Maximum Operating Temperature: 150 °C
- Height: 9.15mm
- Width: 4.6mm
- Line Regulation: 6 mV
- Length: 10.4mm
- Dimensions: 10.4 x 4.6 x 9.15mm
- Load Regulation: 10 mV
1 x 3.3 V TO-220 voltage regulator
You might also need a heatsink for your regulator
Resources
Understanding How a Voltage Regulator Works
LCD Board 2004 20x4 5V Blue screen display with controller (20x4 character display)
Adding a LCD to any project immediately kicks it up a notch. A great UI addition to any Microcontroller or Raspberry Pi project.
Specifications

What's in the box?
1 x 2004 LCD Display Module
Resources
Interfacing with a 2004 and 1602 LCD

Specifications
- 2004 204 20X4 Character LCD Display Module Blue Backlight.
- Blue backlight
- Fully assembled and tested Serial LCD 20x4 Module
- Display Format: 20 Characters x 4 lines
- Supply voltage: 5V
- The module can be easily interfaced with a MCU
- The module is a low-power consumption character LCD Module with a built-in controller
- Size: approx. 98mm x 60mm x 12mm

What's in the box?
1 x 2004 LCD Display Module
Resources
Interfacing with a 2004 and 1602 LCD

DC 5V WCS1800 Hall Current Detection Sensor Module 35A Precise With Overcurrent Signal LED (WCS1800 Hall Current)
The WCS1800 Hall Current sensor has two functions
Features
What's in the box?
1 x WCS1800 Hall current detection sensor
Resources
Interface

VCC: power positive
DOUT: TLL high/low level signal output
GND: power negative
AOUT: sampling current signal conversion voltage output port
Analog voltage signal output (AOUT)
Relationship between detection current and analog signal output is shown below:
Analog signal output: V0=Vcc*0.5±la*K (la is actual current through current detection pin, and K is linearity)
Eg: Input current is 1A, Vcc=5V and WS1800 linearity is 60mV/A
The above are ideal values. There might be some precision errors.
On/Off output(DOUT)
- current detection
- over current protection (can be preset from 0.5A to 35.0A)
Features
- Operating voltage: DC 5V
- Current detection range: DC +-35A, AC 25A
- Linearity: K=60mV/A
- Limit current range: 0.5A to 35A(for on/off value output)
- Over current signal indicator LED
- Sampling current conversion analog voltage signal output and it can connect ADC; TTL level signal output and it can connect MCU IO port control
- Board size 37mm x 31mm
- Working temperature: 25 to 85C
What's in the box?
1 x WCS1800 Hall current detection sensor
Resources
Interface

VCC: power positive
DOUT: TLL high/low level signal output
GND: power negative
AOUT: sampling current signal conversion voltage output port
Analog voltage signal output (AOUT)
Relationship between detection current and analog signal output is shown below:
Analog signal output: V0=Vcc*0.5±la*K (la is actual current through current detection pin, and K is linearity)
Eg: Input current is 1A, Vcc=5V and WS1800 linearity is 60mV/A
- When the current flows in from positive direction: V0=Vcc*0.5+la*K, V0=(2.5+0.06)V=2.56V
- When the current flows in from negative direction: V0=Vcc*0.5-la*K, V0=(2.5-0.06)V=2.44V
- If it is an AC signal: V0=Vcc*0.5+la*K, V0=(2.5+0.06)V=2.56V
The above are ideal values. There might be some precision errors.
On/Off output(DOUT)
- Make sure the current flows in from the positive direction. Adjust to the desired current warning level.
- LED will be on when current is below the setting and DOUT will be low.
- When the detected current is higher than your setting, the LED will turn off and the DOUT pin will go high.
T8 400mm Lead Screw Set with Shaft Coupling and Mounted Ball Bearing (T8 400mm Lead Screw Set)
These are 4 start 8mm pitch leadscrews with a 200 steps per revolution motor and the 16x microstepping on most common 3D printers. This adds up to 400 steps per mm 3200 steps/ 8mm per rev = 400 steps /mm the same as most 3d Printer lead screws use.
Specifications
Features
1 x Lead screw
1. Put screw nut onto the Lead screw.
Specifications
| Lead screw | |
| Material | stainless steel |
| Diameter | 8mm |
Lead | 2mm |
| Total Length | 400mm |
Screw nut | |
| Material: | brass |
| Diameter | 8mm |
Mounted ball bearing | |
| Material | zinc alloy |
| Bore diameter | 5mm |
Hole diameter | 8mm |
| Total length | 55mm |
| Height | 29mm |
Shaft coupling | |
| Material | aluminium |
| Shaft | 6.35 x 8mm |
| Length | 24mm |
| Diameter | 18mm |
| Quantity | 1 set ( 1 screw 1 Screw nut 2 Mounted ball bearing 1 shaft coupling) |
Features
- Screw mainly used in stepper motors, machine tools, and other CNC equipment.
- Screw directly connected to bearing.
- Suitable for Industrial automation equipment, stepper motor rails, 3D printers, engraving machines, XYZ modules, slider, lifts etc.
1 x Lead screw
1 x Screw nut
2 x Mounted ball bearings
1 x Shaft coupler
Resources
Resources
How to install:
1. Put screw nut onto the Lead screw.
2.Then the 2 Mounted ball bearing separately, install at both ends of the Lead screw.
3. According to the size of you need to adjust the distance between the nut and Mounted ball bearing.
4. Put shaft coupling into the Lead screw beside the Mounted ball bearing.
Aluminum Alloy HeatSink For Solid State Relay SSR Heat Dissipation (SSR relay heatsink)
Heat sink for solid state relay SSR
Adding an aluminum alloy heat sink will increase the lifespan of your SSR relay, it will help dissipate the heat and protect your relay.
Solid State Relays are ideal for automatic process control application, a must component for temperature controller and other machinery control system.
Specifications
What's in the box?
1 x Solid state relay heat sink
Adding an aluminum alloy heat sink will increase the lifespan of your SSR relay, it will help dissipate the heat and protect your relay.
Solid State Relays are ideal for automatic process control application, a must component for temperature controller and other machinery control system.
Specifications
- Material: Aluminium alloy.
- Size: Roof:50mm x 60mm.Foot:80mm x 50mm.
- Height: 43mm.
- Weight: 96g
- Compatible with: Designed specially for single phase solid state relay.
- Colour: Silver
What's in the box?
1 x Solid state relay heat sink
INA219 I2C interface High Side DC Current Sensor Breakout power (INA219 I2C interface)
CJMCU-219 is a module with the I2C interface of zero drift and bi-directional current/power monitoring and control integrated circuit (IC), further expand the TI energy-saving electronic products.INA219 has the industry's highest precision and the small size, not only can monitor the pressure drop on the shunt resistor, sensing shunt power supply voltage, at the same time also can calculate the power.The device adopts the SOT23 packaging, but for the server, notebook computer, power supply, battery management and digital electric vehicle and telecommunication equipment measuring flu provide small, low cost solution.
INA219-40 c to 85 c temperature range and can realize the maximum error of 1% accuracy, maximum offset of 100 uV.The advantage of the high precision of the product in combination with 12 resolution, can help clients as much as possible, reduce the pressure drop on the shunt resistor, which can minimize the power loss and power consumption, and saving board space.The device epic of 26 bus voltage range of 0 V to V.
Features
What's in the box?
1 x INA219 board
INA219-40 c to 85 c temperature range and can realize the maximum error of 1% accuracy, maximum offset of 100 uV.The advantage of the high precision of the product in combination with 12 resolution, can help clients as much as possible, reduce the pressure drop on the shunt resistor, which can minimize the power loss and power consumption, and saving board space.The device epic of 26 bus voltage range of 0 V to V.
Features
- Calibration programmable registers can directly read its unit of measure is the ampere current, and power in watts per read.
- For as many as 128 sampling averaging, in order to realize filter in noise environment.
- The I2C interface has a timeout, not only can avoid the bus lock, but also can provide high-speed mode, meet the communication requirements of up to 3.4 MHz.
- All features are support software programmable INA219.
- Using single power supply, the working voltage between 3.0 to 5.5 V.
What's in the box?
1 x INA219 board
Power cable USB micro-B to USB-C adapter for Pi4 Black (Pi4 USB micro to C black adapter)
This small adapter allows you to convert an existing micro USB power supply (like the official Raspberry Pi universal power supply for Raspberry Pi 1, 2 and 3) into a USB-C power supply.
Note that when a micro USB power supply is used, the maximum power that can be delivered to the Raspberry Pi 4 will be 12.5W. This means that less power will be available to devices connected to the USB 2.0 and USB 3.0 ports on the Raspberry Pi 4 than when using the new Raspberry Pi 15.3W USB-C power supply.
Specifications
• Female USB-B to Male USB-C adapter
• Compatible with Raspberry Pi 4 Model B (all variants)
• Carry on using your USB micro-B devices
What's in the box?
1 x USB micro-B to USB-C adapter
Raspberry Pi 4B Aluminium Heatsink Kit(4) (Pi4 silver heatsink kit(4))
The Heat Sink Kit for Raspberry Pi 4B is a four-piece aluminium heat sink kit which is used to cool the chip on the Raspberry Pi 4B. For silent passive temperature control of your Raspberry Pi.
Specifications
Measurements
What's in the box?
1 x set of Aluminum Heat Sinks
Specifications
- Material: Aluminum
- Colour: Sliver
Measurements
- 14mm x 14mm x 5mm
- 14mm x 9mm x 5mm
- 9mm x 9mm x 5mm(2 units)
What's in the box?
1 x set of Aluminum Heat Sinks
Interior Panel Mount Temperature Meter - Celsius (Temp panel mount)
Battery powered panel-mount temperature display. Suitable for basic room or environment monitoring.
Features
What's in the box?
1 x LCD Digital Thermometer Temperature Sensor
Features
- Material: Plastic
- Indoor temperature °C display.
- It comes with a mounting clips which allows it to be panel mounted
- Temperature range: -50 ~ 70 Degrees.
- Usage temperature: -10 ~ 50 Degrees.
- Usage humidity: 5% ~ 80%
- Accuracy: /-01 Degrees.
- Distinguishing temperature: 0.1 Degrees.
- Power: 2 x DC1.5V LR44 button batteries (Not included)
- Cable length: 0.8M.
- Size: 48 x 28 x 15(mm)
- Colour: Black
What's in the box?
1 x LCD Digital Thermometer Temperature Sensor
White USB-C Female To Micro USB Male Adapter (White USB-C to micro B adapter)
This adapter is ideal to convert the 3A type C official power supply to micro B for the Raspberry Pi models Zero, 2 and 3.
Specifications
What's in the box?
1 X White Type C Female To Micro USB Male Adapter
Specifications
- Material: Plastic and Metal
- Colour: White
- Length: 2.3cm
- Connector A: Micro USB Male
- Connector B: Type C Female
What's in the box?
1 X White Type C Female To Micro USB Male Adapter
ESP32-WROVER 4MB Module with Bluetooth and WiFi (ESP32-WROVER)
ESP32-WROVER is a powerful, generic WiFi-BT-BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding. At the core of this module is the ESP32-D0WDQ6 chip*, same as ESP-WROOM-32 module. Compared to ESPWROOM-32, ESP32-WROVER has an additional SPI Pseudo static RAM (PSRAM) of 32 Mbits. As such, ESP32- WROVER features both 4 MB external SPI flash and 4 MB external PSRAM. The ESP32-WROVER module has a PCB antenna, while the ESP32-WROVER-I uses an IPEX antenna. The information in this datasheet is applicable to both of the two modules. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the clock frequency is adjustable from 80 MHz to 240 MHz. The user may also power off the CPU and make use of the low-power coprocessor to constantly monitor the peripherals for changes or crossing of thresholds. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, low-noise sense amplifiers, SD card interface, Ethernet, high-speed SPI, UART, I2S and I2C.
The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that the module is future proof: using Wi-Fi allows a large physical range and direct connection to the internet through a Wi-Fi router, while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection. The sleep current of the ESP32 chip is less than 5 µA, making it suitable for battery powered and wearable electronics applications. ESP32 supports a data rate of up to 150 Mbps, and 22 dBm output power at the antenna to ensure the widest physical range. As such the chip does offer industry-leading specifications and the best performance for electronic integration, range, power consumption, and connectivity. The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that developers can continually upgrade their products even after their release.
What's in the box?
1 x ESP32-WROVER 4MB Module
Resources





The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that the module is future proof: using Wi-Fi allows a large physical range and direct connection to the internet through a Wi-Fi router, while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection. The sleep current of the ESP32 chip is less than 5 µA, making it suitable for battery powered and wearable electronics applications. ESP32 supports a data rate of up to 150 Mbps, and 22 dBm output power at the antenna to ensure the widest physical range. As such the chip does offer industry-leading specifications and the best performance for electronic integration, range, power consumption, and connectivity. The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that developers can continually upgrade their products even after their release.
What's in the box?
1 x ESP32-WROVER 4MB Module
Resources





GY-302 BH1750 BH1750FVI light intensity illumination module 3V-5V (light intensity sensor board)
For a wide range of brightness for 1 lux high precision measurement.
This sensor module is the most suitable to receive the ambient light data for adjusting LCD and other related projects. It is possible to detect wide range at High resolution.
The sensor is a calibrated digital light sensor that measures the intensity of the ambient light and stores it as a 16-bit number.
Specifications
What's in the box?
1 x GY-302 Module
This sensor module is the most suitable to receive the ambient light data for adjusting LCD and other related projects. It is possible to detect wide range at High resolution.
The sensor is a calibrated digital light sensor that measures the intensity of the ambient light and stores it as a 16-bit number.
Specifications
- Type: GY - 302
- Size: 13.9 mm X 18.5 mm
- The original BH1750FVI ROHM chip
- Power supply: 3-5 V
- Data range: 0-65535
- Sensor built-in and bitad converter
- Direct digital output, bypassing the complicated calculation, omit calibration
- Do not distinguish between ambient light
- Close to the visual sensitivity of spectral characteristics
What's in the box?
1 x GY-302 Module
Full Graphic 12864 Smart Controller RAMPS 1.4 LCD 12864 LCD Control Panel Blue Screen for 3D Printer (12864 3d printer display)
Description:
LCD control panel for 3D printers. LCD control panel through which you can achieve spooling as the 3D model Gcode files are copied to the SD card and then print the file via the LCD control panel. This version is an upgraded version of the reprap smart controller.

Features:
Using a large screen 12864LCD
With a SD card base on back, put your sliced file onto the SD card and select the file on the LCD. It can then can be printed
Product comes encoder to select the desired file
Plug and play on the RAMPS, but may need to modify the firmware to support
Specifications:
Screen size: 128x64
Cable Length (cm): 30
Input Supply Voltage: (VDC) 5
Length (mm): 93
Width (mm): 87


Package Includes:
1x LCD 12864 Smart Controller
1x Smart Adapter
2x 30cm FC Cable

LCD control panel for 3D printers. LCD control panel through which you can achieve spooling as the 3D model Gcode files are copied to the SD card and then print the file via the LCD control panel. This version is an upgraded version of the reprap smart controller.

Features:
Using a large screen 12864LCD
With a SD card base on back, put your sliced file onto the SD card and select the file on the LCD. It can then can be printed
Product comes encoder to select the desired file
Plug and play on the RAMPS, but may need to modify the firmware to support
Specifications:
Screen size: 128x64
Cable Length (cm): 30
Input Supply Voltage: (VDC) 5
Length (mm): 93
Width (mm): 87


Package Includes:
1x LCD 12864 Smart Controller
1x Smart Adapter
2x 30cm FC Cable
