Battery Varta Industrial AA - 4006 LR06 Mignon 1,5V- pack 4unds

Resistor 4,7K Ohm 5% 0,25W 1/4W features:
- 4.7K Ohm
-Type: Carbon film
-Tolerance: ±5%
-Power: 0.25W
-Dimensions: 2x7mm

Protoboard Breadboard 9x15cm features:
-PCB dimension: 9x15cm
-Hole diameter: 1mm
-Pitch: 2.54mm
-Bakelite with copper fields

NFC module for Educational STEAM Kit.  Near field communication (NFC) is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing them into close proximity, usually no more than a few centimeters. Compatible with almost any microcontroller, Arduino, PIC, AVR. It can be used in Access Control projects and Alarm projects. RFID PN532 NFC Module with Card and Pendant features:
- Support i2C, SPI, High Speed UART - Support RFID reading and writing - Support P2P communication with peers - Support NFC with phone - Work in NFC Mode or RFID reader/writer Mode - RFID reader/writer supports: - 1k, 4k, Ultralight, and DesFire cards ISO/>

Flux Colophony Rosin Core 40g features:
Flux rosin, solid resin, neutral ph for a correct electronic welding.
- They do not cause corrosion of non-ferrous metals
- Does not cause short circuits
It melts with the temperature, spreading through the area to be welded and penetrating into the most difficult corners, cleans and prepares the surfaces and components to be welded, and facilitates the adhesion and fluidity of the tin, improving welding in electronics works.
Use a toothpick for the application. Do not apply in excess.
Security:
- Use in ventilated spaces. Do not inhale vapors that are released when welding
- Keep the pot tightly closed and out of the reach of children
- Do not eat. It is not toxic
- Rarely irritating to skin contact

The module uses a 24-bit high precision A/D conversion chip HX711.
The input circuit can be configured to provide a bridge.
The electric bridge voltage sensor model (such as pressure, weight) is an ideal sampling module with high precision and low cost. HX711 Module Weighing Pressure Sensor 24 Bits features:
- Two selectable differential input channels
- Active low noise PGA with selectable gain of 32, 64 and 128
- Power supply regulator for load cell and ADC analog power supply
- Oscillator on chip that does not require external component with optional external glass
- Power-on-reset on the chip
- Simple serial control and serial interface: controls driven by pins, programming is not required
- Output data rate 10SPS or 80SPS selectable

Sound detection module for Arduino projects, smart cars. Analogical Acoustic Sensor 4-Pin Microphone Sound Detector Module features:
- Adjustable High Sensitivity Acoustic Sensor
- LM393 comparator chip
- Integrated indicator LED
- AO analog output, output voltage signal in time real microphone
- DO digital output, sensitivity adjustable through potentiometer
- Frequency Range between 30 and 15000 Hz
- Power 4 ~ 6V
- Measurements 36x16x15mm

It has an ATMega328P chip running at 16Mhz with a factory loaded bootloader
Characteristic:
- Microcontroller: ATmega328
- Operating Voltage (logic level): 5V
- Input Voltage (recommended): 7-12V
- Digital I / O Pins: 14 (6 PWM outputs)
- Analog Inputs: 8 (A0-A7)
- DC Current per Pin I / O 40 mA
- Flash Memory: 32 KB (2 KB used by the bootloader)
- SRAM: 2 KB
- EEPROM: 1 KB
- Clock Frequency: 16 MHz
- USB Communication - CH340
- Dimensions: 18 mm x 44 mm

Ideal to power your Arduino board through the power input.
5x 9v Battery Adapter Connector 6F22 with Cable features:

- Cable 15cm long
- Battery connector 9V, 6F22