Quartz Crystal Oscillator 8 MHz

Red Laser Cross Module 650nm 5mW Head Point Adjustable Focal Length features:
- Type: red laser diode
- Type of laser: cross
- Adjustable Focus
- Wavelength: 650nm
- Output power: 5mW
- Operating voltage: 4.5-5V
- Operating intensity: <40mA
- Operating temperature: -30ºC to 60ºC
- Dimensions of the emitter: Φ12x35mm
- Cable length: 130mm

40x Female-Female Cable 10cm features:
- Length: 10cm
- Quantity: 40 cables
- Dupont female connectors on both ends
- Compatible with 2.54mm male connectors
- High quality and good working conditions
- Easy to install and use

Fixed lead inductor with high current, high reliability and low resistance 1 µH.
10x Fixed Lead Inductor 1μH - 10% features:
- Fixed Inductor 1 µH - Tolerance: 10%
- Axial lead power inductor,
- UL Polyolefin Retraction Tube Lead Inductor,
- Leaded inductor with ferrite core,
- AC line filters,
- Air core coil,
- Common mode shock coils,
- Radial impact inductors,
- Armored radial obstruction,
- Toroidal coil,
- Ferrite beads,
- Broadband chokes.

Set of 300 diodes packed in a handy box. Lens colour: red, green, yellow, yellow, blue - diffuse, light white.

20x Electrolytic Capacitor 2,2uF 50V 105ºC Arduino features:
-Type: Electrolytic Capacitor
-Assembly: intern
-Value: 2.2uF
-Maximum tension: 50V
-Maximum temperature 105º C
-Dimensions: 5x11mm
-Quantity: 20 units

Version compatible with Arduino Mega2560 R3
It has an Atmega2560 chip running at 16Mhz with a factory-loaded bootloader
With 54 digital input / output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UART (hardware serial ports)
The board includes a USB connector, an ICSP port , a reset button and some status LEDs
Arduino compatible Mega2560 R3 CH340 board features:

- Operating voltage: 5V
- Input voltage (recommended): 7-12V
- Digital I / O Pins: 54 (14 PWM outputs)
- Analog input pins 16
- DC current per I / O Pin 40 mA
- DC Current per Pin 3.3V 50 mA
- Flash: 256 KB of which 8 KB are used by the bootloader
- SRAM: 8 KB
- EEPROM: 4 KB - Clock speed 16 MHz

NodeMcu module based on ESP8266 controller and programming in Lua language
NodeMcu is equipped with 10 GPIO, PWM, I2C, 1-wire and ADC
ESP8266-12E is an improved version of ESP8266-12
It works as a standard WiFi 802.11 b / g / n 2.4 GHz
USB Communication - CP2102 Chip
Characteristic:
ESP 12E ESP8266 ESP12E NodeMcu Lua Wireless Development Board CP2102 WiFi features:

- Supply voltage: 3.3V (LOGICAL LEVELS: 3.3V)
- Supported protocols: 802.11 b / g / n
- Network support: 2.4 GHz
- Band: 2400 (MHz) - Wi-Fi Direct (P2p), Soft Access Point
- Integrated TCP / IP stack
- PLL, regulators and integrated power management units
- Output power: 0 , 15 (W); + 19.5dBm in 802.11b mode

Digispark is a development board based on the ATTINY85 microcontroller from ATMEL born in a successful campaign on Kickstarter.
Similar to the Arduino line , It is one of the smallest boards on the market.
Programmable directly from USB with the same Arduino tools. It has a built-in Micronucleus bootloader and can be replaced by similar ones such as the Trinket bootloader. Adafruit or others.
You can use many of the same Arduino libraries and you have your own on the digispark wiki. Arduino compatible Attiny85 Digispark board features:
- USB power supply
- External power supply (7v-35v DC 12v maximum recommended)
- 5V DC 500mA regulator on board
- Programmable with the Arduino IDE
- Loaded with Micronucleus bootloader