SCS8UU Linear Block Bearing 8mm

It is not possible to reverse the polarity by mistake.
JST PHR-2 Female 2 PIN 2mm features:
Manufacturer JST Connector series: PH Connector: plug Connector class: female Type of connector: conduit-board Raster of contactors: 2mm Number of pins: 2 Mechanical mounting: for conduit Voltage Working: 100V Working current: 2A Working temperature: -25 ... 85 ° C Connection version: contactless technical data sheet PH series

Sodium Persulfate B327 (PCB) Printed Circuit Board Etching 1kg features:
A compound for etching of printed circuit boards and pickling of copper. An ideal alternative to ferric chloride. It is readily soluble and does not crystallize from the solution. It etches evenly, ensures the sharpness of contours and minimizes undercutting. Usage: Dissolve the preparation in 0.5 l of water at a temperature of 50°C. Perform etching at 40°C (max. 50°C). Bath movement ensures quicker etching. The etching solution must not be stored in hermetically sealed containers due to the risk of developing overpressure and cracks.

8mm Bore Pillow Block Mounted Bearing is often suited to support rotating shaft applications.

It is very easy to make it work with an Arduino, PIC or any other microcontroller.
In its output pin we will be able to measure the PWM pulse width depending on the distance of the obstacle.
HC-SR04 Ultrasonic Sensor Distance Measuring Module features:
- Supply voltage: 5V (4.5V- 6V)
- Consumption: 30 mA typical, (35 mA max)
- Interface: VCC , GND, Signal
- Range: 2 cm to 3 meters
- Angle 15º
- LED indicator of measurement in progress
- Frequency: 40 kHz for 200 µs - Size: 30mm x 20mm
- Quantity: 1 unit
Useful links for Arduino / Raspberry programming and projects with boards Arduino / Raspberry:
Automatic robot operation with obstacle detection />

- Measurements:
Inner diameter d: 8mm
Outside diameter D: 22mm
Width - dimension B: 7mm
- Dimension C1: 1,5mm
- Dimension D1: 25mm
- Quantity: 1 unit

Fan 12V 2x Cables 3D Reprap Printer features:
- For Prusa RepRap 3D Printer
- Voltage: 12V
- Consumption: 90mA - Speed: 7000rpm ± 10%
- Noise level: 25dB ± 10%
- Screw diameter: 3.5mm
- Service Life Time: 35000 hours
- Operating temperature: -10 ° C to 65 ° C
- Cable length: 28cm
- Dimensions: 30mm x 30mm x 10mm

L7805CV 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

28BYJ-48 Stepper Motor 12V + Driver Board ULN2003 features:
- Stepper motor 28BYJ-48 + ULN2003 controller
- The 28BYJ-48 has everything you need to start using motors step by step in your project
- A stepper motor converts digital impulses into small steps of movement in one direction
- The motor also comes with a ULN2003 motor controller card
- Can control two DC motors or a motor with bipolar steps with a maximum amperage of up to 500 mA
- Equipped with state indicator LEDs A, B, C, D
- Engine model: 28BYJ-48
- Phasing Engine: 4
- Operating voltage: 12V DC
- Frequency: 100 Hz
- Operating current: 200mA
- Max Power: 20W
- Winding resistance: 70 Ohm
- Angle per step: 5,625º
- Steps per round: 64