Passive Buzzer 5V

The piezoelectric buzzer has a simple structure in which a ceramic piezoelectric disk is affixed to a vibrating plate. An alternative voltage applied to this element will cause a contraction or diametrical expansion of the element. This feature is used to fold a vibrating plate, which generates sounds. Passive Buzzer 5V features:

- Input voltage: 3V to 12V
- Diameter: 12mm
- Height: 7.5mm
- Pin spacing: 6.5mm
- Impedance: 16 Ohm
- Working frequency: 2 to 5 KHz
- Quantity: 1 unit

It can be used to control the microprocessor of the Arduino AVR PIC system and others, or as a digital potentiometer rotating the rotary encoder can be counted in positive and negative, depending on the direction of rotation; with the button of the rotary encoder can be reset to its initial state, which starts counting from 0.

- Bluetooth 4.0 AT-09 BLE Master / Slave module with 6-pin connection base
- This module is very similar to HM-10 module
- Bluetooth protocol: Bluetooth V4.0 BLE specification
- Ultra-low power consumption, in 90uA standby mode
Wireless Module AT-09 Bluetooth 4.0 CC2541 IOS BLE features:

- Chipset based on CC2541
- Bluetooth Class 2
- Industrial level Bluetooth module SPP
- Flash 256Kb
- Integrated chip antenna
- Power supply: + 3.3 VDC 50 mA
- Working temperature: -5 C to + 60 C
- Operating frequency: 2.4 GHz ISM Band
- Modulation method: GFSK (Gaussian Frequency Shift keying)

NFC RFID Keychain Tag 13.56 MHz features:
- 32 bit unique code
- Protocol: ISO14443
- Compatible with NFC Mifare 1k
- Memory: 1kB EEPROM
- Operating frequency: 13.56MHZ
- Communication speed: 106Kboud
- Reading distance: 2.5-10CM
- Reading time: 1-2MS
- Working temperature: -20ºC to 85ºC
- Number of uses 100,000 times
- Data retention: 10 years
- Material: ABS
- Dimensions 40.5 x 32 x 4.2 mm

The multifunctional relay control module, FRM01, is designed for customers with different synchronization and control needs.
The FRM01 is controlled by the STM8S003F3P6 microcontroller and has 18 different functions.
Each function can be customized to meet customer needs in a variety of time and power control applications.
The FRM01 is equipped with a high-quality power relay, a high-power voltage transistor, red and blue LED indicators, an LED display on a double-sided PCB board.
The output of the board is driven by a high quality power relay capable of controlling the AC and DC loads. Timer Relay Module FRM01 features:
- Operating voltage: 12 VDC
- 4 buttons: SET, SWI, NUM +, NUM-
- Operating temperature: -20 °C - + 60 °C

This module is a small source of energy, this board was designed to be as small and as indiscreet as possible.
Putting a battery type AAA and operating the power switch, will have a supply of 5 V to power a lilypad circuit.
Use up to 200ma, it is protected against short circuits. This card has AAA battery clips but can use a 1.2V to 5V input, the module increases the voltage up to 5V.
Lithium polymer batteries are an alternative to rechargeable batteries.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Power Supply 5V Step Up with AAA Batteries features:
- Type of batteries connectable: AAA
- Input voltage (of the batteries): from 1.5V to 5V
- Output voltage: 5V

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 - the CP2102 chip. Characteristic of ESP 12E: 
- 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, 
- TCP Stack / Integrated IP, 
- PLLs, Regulators and Integrated Power Management Units, 
- Output Power: 0.15 (W); + 19.5dBm in 802.11b mode,

Red, yellow and green LED traffic light mini kit ideal for educational and beginner Arduino projects.

Relay Module DC 5V 10A 2 Channel Low/High Trigger features:
- Channels: 2 (independent protected with Optocouplers)
- Supply voltage: 5V
- Output Current: 10A
- Relay activation current: 15mA ~ 20mA
- Insulation: Yes
- Trigger signal type jumper (low / high)
- LED indicator: For each channel
- Dimensions: 40x 50mm
- It has a jumper that allows to choose type of trigger signal (low / high)
- This module can be controlled directly by the microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL)

The Raspberry Pi High Definition (HD) camera board connects to any Raspberry Pi or Compute Module to create HD photos and video.