5V Stepper Motor 28BYJ-48 + ULN2003 Driver Boat

Isopropyl alcohol is used for cleaning: - Of electronic devices, such as contact tips (like those of ROM cartridges)
- Magnetic tapes and disc heads (such as those of audio and video recorders and floppy disk drives)
- Laser lenses in optical disk drives (for example: CD, DVD) and thermal paste removal from heat sinks and integrated circuit packages (for example: CPU) of the keyboard and LCD screen Very used in the cleaning of lenses of photographic lenses and contacts of electronic devices, since it does not leave marks and is of rapid evaporation. It is sold commercially also as a cleaner for slates.

Relay SRD-05 DC-2P 5V 10A SPDT features:
- Supply voltage: 5V
- Output Current: 10A
- For power switching with 5V DC signals - Microcontroller, Arduino, Electronica

LED Display 4-Digit 7-Segment Red Common Anode features:
- Supply voltage of the segments: 3 VDC
- LED color of the segments: red
- Digit length: 14.2mm
- Digit width: 8.1mm
- Pin numbers: 12
- Diameter of pins: 0.51mm
- Step between pins: 2.54mm
- Consumption current per segment: 30mA
- Maximum admissible current per segment: 70mA
- Direct current by segment (pulse operation): 30mA
- Number of digits: 4
- Segment numbers by digit: 7
- Operating temperature: -25°C - + 85°C
- Storage temperature: -30°C - + 85°C
- Screen with common anode connection
- Screen size: 50.3x19x8 mm

The MAX9812 is a sound amplifier specially designed to treat the signal coming from microphones.
We can use it together with Arduino to measure sound from a processor like Arduino.
When we saw the modules with microphone we commented that, in general, the signal generated is too low to be registered correctly.
If we want to be able to measure sounds, we will have to amplify the signal. The MAX9812L has single / dual inputs, fixed gain of 20dB, bandwidth of 400 kHz, low noise and low signal distortion 0.015% THD.
There are two models, its supply voltage is 2.7V to 3.6V.
We can use the sensors with MAX9812 for applications that require measuring the intensity or frequency of the sound.

Encapsulated with water resistant stainless steel with sensor dimensions 5.5*50mm, cable length 200 cm. DS18B20 Probe 2m Submersible Temperature Sensor features:
- Based on the DS18B20 chip
- Supply voltage: 3 ~ 5.5V
- Consumption <5mA
- Measuring Range: -55 °C to 125 °C
- Accuracy: +/- 0,5ºC
- Outputs: - GND black
      - Vcc red
      - Yellow digital output
- Inocidable steel
- Cable length: 2m  

Stepper Motor Driver Board for industrial automation, Robotics, CNC Engraving machines, CNC 3D printer, CNC embroidery machines, laser engraving, labeling machines, X-Y Table, Pick and Place robot/machine, CNC drilling milling machine and many more application.
Run easily with Arduino. Router TB6600 1 Axis 3.5A Stepper Motor Driver Board features:
- Minimum operating voltage: 9 V
- Maximum operating voltage: 40 V
- Maximum current: ± 3.5 A
- Maximum power: 160W
- Suitable for stepper motors NEMA16, NEMA17 and NEMA 23
- Control inputs 5V optically isolated
- Step resolution: 200, 400, 400, 800, 1600, 3200, 6400
- Resolution of microsteps: full, 1/2A, 1/2B, 1/4, 1/8, 1/16 y 1/32 adjustable by interruptor DIP
- Current control: 0.5A/>0A/>

Modern compact digital multimeter with large LCD display that provides a better user experience.

This multimeter complies with IEC61010 standards: in pollution degree 2, overvoltage category (CAT I 1000V, CAT II 600V) and double insulation.

8x8 LED Matrix Kit MAX7219 Arduino PIC Dot Matrix Display Cascade DIY features:
- 8X8 LED matrix controlled by MAX7219 chip
- 3mm red LED
- 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