Linear Bearing LM8UU 8mm Ball Bearing for 3D Printer

This is a CH340G TTL UART 5V serial adapter, designed to allow adding a USB connection to your project.
In addition, this opens up the possibility of programming microcontrollers like the Arduino Pro mini.
This module allows you to connect your project, from programming small microcontrollers to a custom computer keyboard.
The module is ready for use of a UART connection.
This may require the installation of a driver; however, it is a standard driver distributed by Microsoft Windows Update, available in Linux and that can be configured in MAC OS.
Adapter module CH340G LC Technology -TTL UART 5V series features:
- Manufacturer: LC Technology,
- Communication chipset: CH340G
- Communication: UART,
- Pin connection:

IIC/I2C adapter PCF8574 LCD 1602 1604 2004 Interface features:
- Based on the PCF8574A chip
- Power: 5V
- Supports I2C Protocol
- A potentiometer for regulate contrast
- Dimensions: 19x42mm PCF8574 - & gt; the default address 0x20
PCF8574A - & gt; the default address 0x3F - You can change anyone between 0x20 and 0x27 depending on whether or not you have soldered pins A0 A1 A2 - With this module the communication between the Arduino and the LCD It is only made through two outputs, SDA and SCL
- Up to 8 LCD screens can be connected to the same I2C bus choosing a different address - Ideal for projects with ARDUINO and Raspberry Pi platforms - You can use it with PIC, AVR, STM32

5x L7805 Voltage Regulator 5V 1.5A TO-220 features:
-Type Output: Fixed
-Voltage Output: 5V
-Manufacturer: ST Microelectronics
-Output current: 1.5A
-Max input voltage: 35V
-Input input min.: 5V
-Operational temperature: 0ºC to + 125ºC
-Encapsulated: TO-220
-Polarity: Positive

USB A to Mini USB B cable 30cm features:
- Color: black
- Length: 30cm - ROHS compliant - Manufacturer Goobay Germany 

Characteristic: - Lithium Battery WITHOUT Protection
- Nominal capacity: 2600mAh (discharge of 0.2C, 2.75V)
- Minimum capacity: 2550mAh (0.2C, 2.75V discharge)
- Charging voltage: 4.2 ± 0.05 V
- Nominal voltage: 3.63V
- Charging method: DC-CV (constant voltage with current limited)
- Charging current: standard charge: 1300mA, fast charge: 2600mA
- Charging time: standard charge: 3 hours, fast charge: 2.5 hours
- Max. Charging current: 2600mA (ambient temperature 25 °)
- Max. Discharge current: 5200mA (ambient temperature 25 °)
- Discharge cut-off voltage: 2.75V
- Cell weight: 47.0g maximum
- Cell dimension: Height: 65.00 mm max., Diameter: 18.40 mm max.

Pulley GT2 20 Teeth 8mm Bore Aluminum 3D Printer Reprap features:
- Number of teeth: 20
- Pitch: 2mm
- Material: Aluminum alloy
- Outside diameter: 16mm
- Inner hole: 8mm
- Use with strap: 6mm and 6.35mm
- Toothed width 7mm
- Quantity: 1 unit
- Ideal for fixing on the axis of the motors of your 3D printer