Sonoff MiniR2 - Switch WiFi

This intelligent WiFi plug can be controlled by the eWeLink APP, with which you can create routines and scenes, or by voice assistants such as Alexa or Google Home. Its IP55 Waterproof protection makes it ideal for outdoor functions in your home or workplace.

Air quality sensor with high precision whose SDS011 uses laser dispersion to detect particle concentration between 0.3 and 10 um in the air.

With digital output by USB (UART) and built-in fan. It is a powerful sensor, fast (response less than 10s), accurate and reliable.

Led Matrix 8x8 MAX7219 Soldier features:
- MAX7219 controller module with 8x8 led matrix + cables
- 8X8 LED matrix controlled by MAX7219 chip
- Led 3mm red color
- SPI communication
- Voltage: 4.7 - 5.3V DC
- Interfaces to manage multiple modules in cascade
- Matrix dimensions: 32mm x 32mm x 8mm
- PCB dimensions: 32mm x 50mm

SONOFF SNZB-04 is a mini sensor for opening and closing doors and windows, intelligent and wireless by ZigBee, through its Bridge. Essential for intruder detection in a home automation system. 

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

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

Descent module.
Use a multimeter to check the output voltage and adjust the potentiometer.
Control of voltage and current.
DC Step-Down Converter 5A 4-38v to 1.25-36v XL4015 LED LiPo features:
- Input voltage: 4-38V
- Output voltage: 1.25-36V
- Current output: adjustable, 4.5A (max 5A)
- Output power: 75W maximum
- Operating temperature: -40 to + 85 ºC
- Operating frequency: 180KHz
- Efficiency conversion: up to 96%
- Short circuit protection: Yes (limited current 8A)
- Protection over temperature: the output switches off automatically
- Size: 62mm x 26mm x 14mm
Principal functions:
- Step-down converter with overcurrent protection
- Li-Po battery charger, Li-Ion

ProtoShield Prototype Expansion Board with Mini Breadboard 170 points for Arduino Mega2560 V3.0 features:
- To mount your projects in a comfortable and orderly way, access to all the pins of Arduino Mega2560, it has a universal plate and protoboard zone, 5V and Gnd buses, reset pushbutton, pushbutton and 2 general purpose leds, zones for integrated Soic and Dip
- The seamless mini breadboard has 170 connection points.
- You can stick on the shield with its self-adhesive back.