8in1 ballpoint screwdriver - with straight and cross head

- The DHT22 humidity sensor is presented in a plastic body ideal for mounting on a panel or similar. It uses a capacitive sensor that returns a digital signal with the measurement - This sensor, unlike DHT11, is capable of measuring negative temperature values ​​and measures tenths of a degree
Characteristic:
- Operating voltage: 3 to 5.5 VDC - Humidity measurement range: 0-100% ± 2% accuracy
- Temperature measurement range: -40ºC to 80ºC ± 0.5º accuracy
- Maximum sampling rate: 2 seconds
Useful links for Arduino / Raspberry programming and projects with Arduino / Raspberry boards:
Write texts on the OLED 0.96 '' screen
- Read the measurements of the temperature / humidity sensor DHT22 / AM2302 on a 0.96 '' OLED screen
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The mini magnetic screwdriver 2in1 is a double Phillips and flathead screwdriver. The 2in1 multitool is a practical tool for screwdriving and screw removal. The 2in1 screwdriver will come in handy for every DIY enthusiast, electronics technician and mechanic in the workshop when working.

Arduino compatible IR motion detector with a detection range of 7 meters and an operating angle of 120º.
An electric pyro sensor , which can detect infrared radiation levels - detect a change in the average IR levels of your detection zone.
Ideal for projects with ARDUINO, PIC, AVR, STM32. HC-SR501 Motion Detector Module Passive Infrared PIR Sensor features:
- Infrared sensor with control circuit
- Adjustable sensitivity and time
- Operating voltage: 4.5V- 20V
- Consumption in Idle state:

It consists of a 16-character, 2-row display.
The display is compatible with the HD44780 controller.
Ideal for projects with ARDUINO.
You can use it with PIC, AVR, STM32. 16x2 1602 LCD display HD44780 Backlit Blue background features:
- LCD screen , 16 characters and 2 lines
- 5V power supply
- HD44780 compatible controller
- Backlit blue background, white letters
- Include an adjustable contrast pin
- Dimensions (mm): 80 x 36 x 12

High sensitivity to Ammonia (NH3), Nitrogen oxides (NOx), Alcohol, Sulphides, Benzene (C6H6), CO2, smoke and other harmful gases.  The MQ-135 sensor is to sensible for other gasses in the air so that is not possible to get good values for CO2 from it.
MQ-135 Air Quality Sensor features:
- Main chip: MQ-135 natural gas sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
   10ppm - 300ppm NH3
   10ppm - 1000ppm Benzene
   10ppm - 300ppm Alcohol
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm

Led module infrared sensor for Arduino
Detector of the source of fire or flame, can detect a flame or wavelength 760 nm-1100 nm
Particularly sensitive to the flame spectrum.
This optical flame sensor is a device that detects the existence of combustion by the light emitted by it.
Infrared LED Flame Sensor 5mm module features:
- 4 Pins Output:
    - A0: analog output
    - D0: digital output
    - GND: ground connection
    - VCC: 5V module power
- Range of light, Distance of 80 cm.
- Angle detection of about 60 degrees,
- This light can be detected by an optical sensor,
- Can be captured by digital inputs and analog inputs of Arduino.

It consists of three principles of induction of primary colors, if you know the composition of all types of color values, you can know the color of the test object.
For TCS230, a color filter is chosen, only a certain primary pass is allowed, it is stopped by another color. For example, when choosing a red filter, the incident light can only be stopped in red, blue and green, so you can get the intensity of the red beam of light.
For the same reason, the choice of other filters, can obtain the intensity of blue light and green light.
Through these three values, the color of the light can be projected onto a TCS230 sensor. Color Recognition Sensor GY-31 TCS230 TCS3200 features:
- Operating voltage: 3 - 5 VDC
- Model GY-91
- Chip TCS230 TCS3200