D type pulley wheels for 3D printers.Now replace worn off/stuck bearing pulley for your 3D printer with these pulley.

This module uses the popular MPU6050 Sensor which includes both a 3 axis accelerometer and a 3 axis gyroscope in a single package.The sensor can be interfaced through a I2C connection which allows an easy and direct interface between the sensor and a micro controller.

The MPU-6000/MPU-6050 family of parts are the world’s first and only 6-axis Motion Tracking devices designed for the low power, low cost, and high performance requirements of smartphones, tablets and wearable sensors.

The 6 Degree of Freedom sensor breakout integrate with the MPU6050 sensor and the low noise 3.3v regulator and pull-up resistors for the I2C bus. So it's available to directly hook up the sensor with the Arduino processors for your robotics,HCI and wearable projects.

These are Heat Bed Spacer Spring for Creality 3D Printer for the base of the heat bed. Their function is to level and cushion the base.

ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.

ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. The ESP32 series employs a Tensilica Xtensa LX6 microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power-management modules. It is a successor to the ESP8266 microcontroller.

This TP4056 1A Li-ion lithium Battery Charging Module with Circuit Protection – Micro USB is a tiny module, perfect for charging single cells that don’t have their own protection circuit. Based on the TP4056 charger IC and DW01 battery protection IC this module will offer 5V 1A charge current then cut off when finished.

Furthermore when the battery voltage drops below 2.4V the protection IC will switch the load off to protect the cell from running at too low of a voltage – and also protects against over-voltage and reverse polarity connection (it will usually destroy itself instead of the battery) however please check you have it connected correctly the first time.

These are Heat Bed Spacer Spring for Creality 3D Printer for the base of the heat bed. Their function is to level and cushion the base.

WeMos- D1 R2 WiFi ESP8266 Development Board is programmable via Arduino IDE. This is an ESP8266 based WiFi enabled microprocessor unit on a Arduino-UNO footprint. That means the board looks and works (in most cases) like an UNO. Several shields, sensors and output devices that are manufactured for the Arduino platform will work on the WeMos-D1R2 with the added advantage of builtin WiFi.

The IR Receiver is a type of Diode but different from the LED. It does not emit any light but detects the presence of light. This diode allows some current to pass through it after detecting light and amount of current flow is directly proportional to the amount of light detected and makes a pair with IR transmitter.

This TP4056 1A Li-ion lithium Battery Charging Module  – Micro USB is a tiny module, perfect for charging single cells. Based on the TP4056 charger IC this module will offer 5V 1A charge current.

With Mini-USB onboard connector, you can directly connect to computer USB port for battery charging. If USB is not available you can use an external source voltage at IN+/IN- pads, it is great for DIY projects. It is small size and lightweight.

12V & 7A Relay Module For Raspberry Pi, Arduino, DSP, AVR, PIC, 8051 and other microcontrollers.

This Relay is used for wide variety of AC & DC applications like Home Automation configured, Solenoids, Motors, lights, fans, heavy load device, home appliances & controlling higher current loads from microcontroller development board.

The D1 Mini is a WiFi capable ESP8266 based WIFI development board in the form of the common Arduino UNO board format. This board is compatible with the Arduino IDE and with NodeMCU. The D1 Mini also features an on-board switching power supply which allows you to power the board from a power supply up to 12V.

The development board features WiFi-SoC ESP8266 and is made for fast IoT prototyping. It is flashed with the latest firmware version and can be set up and programmed right away with the onboard micro USB connection. With only a few lines of code, the NodeMCU Dev Kit connects to your local network and ready for control by other network members like computers and smartphones.