25x M4x10 Nylon Round Separator Polyamide Insulators PCB

TIP120 Low voltage Darlington transistor NPN 60V 5A with collector-emitter saturation pack 5ps features:
- Package / Case: TIP120 TO-220
- Manufacturer: ST Microelectronics
- VCBO collector-base voltage: 60V
- VCEO collector-emitter voltage: 60V
- VEBO emitter-base voltage: 5V
- Collector continuous current: 5A
- DC MAX collector current: 8A
- Maximum power dissipation: 65W if T <= 25ºC
- Storage temperature: -65ºC to + 150ºC
- Maximum operating junction temperature: + 150ºC

Resistor 1K Ohm 5% 0,25W 1/4W features:
-1K Ohm
-Type: Carbon film
-Tolerance: ±5%
-Power: 0.25W
-Dimensions: 2x7mm

2x Protoboard Breadboard 5x7cm EGPC features:
-PCB dimension: 5x7cm
-Hole diameter: 1mm
-Pitch: 2.54mm
-Bakelite with copper fields

Potentiometer B1K Linear features:
-1k OHM kΩ - linear potentiometer 1k Arduino
-Tolerance: +/- 20%
- Power: 0.125W

L7812CV Voltage Regulator 12V 1.5A TO-220 7812 Arduino L7812CV features:
-Type Output: Fixed
-Voltage Output: 12V
-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

M12 Inductive Proximity Sensor PNP DC 6-36V LJ12A3-4-Z/BY 3D Printer features:
- This sensor can be configured as auto Z axis level
- Sensor detection switch inductive proximity LJ12A3-4-Z / BY
- PNP DC6-36V
- Often used for 3D printer bed leveling
- Typical application: printer bed level sensor 3D
- Cylindrical cable type DC 3 cable type (black, brown, blue)
- Inductive sensor type
- PNP NO (Normal Open)
- Detecting Distance 4mm - DC supply voltage 6-36V
- Current output 300mA
- Response frequency 0.5KHz
- Detects iron / aluminum
- Operating temperature -25 ° C at + 55 ° C (Non-freezing condition)
- Head diameter 12 mm
- Size 6.2 x 2cm
- Cable length 100cm

2 Double Side Prototype PCB Board 3x7cm features:
-Thickness of PCB: 1.6mm
-Material: high quality FR-4 glass fiber PCB
-Presented and numbered on both sides
-Top and bottom are identical copper layers
-Pads grid (pitch) 2.54mm/0.1", hole diameter 0.9mm

It can be used to control the microprocessor of the Arduino AVR PIC system and others, or as a digital potentiometer rotating the rotary encoder can be counted in positive and negative, depending on the direction of rotation; with the button of the rotary encoder can be reset to its initial state, which starts counting from 0.