PAM8403 2x3W Digital Amplifier Channel Stereo

The buzzer plate for Lilypad is used for the development and application of configurations that require a buzzer to indicate, for example, warnings, warnings or as part of the correct operation of your device.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Buzzer features:
- Operating voltage: 5 VDC
- Design of common anode
- PCB density: 0.5 mm
- Density of the buzzer: 20 mm
- Outside diameter: 20 mm

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

This module is used to extend the Raspberry's 40 GPIO pins to another set of 2x20 male pins and 8 parallel pins accessible on the terminal blocks in the that test leads are pushed. The electronic board offers great reliability with the Raspberry and is very easy to connect thanks to its existing suitable accessories but not included.
The module offers a set of mini jumpers to configure the GPIO.

XY-V17B is a smart voice module, integrated IO segment trigger, control UART series, ONE_line control of a single serial bus, MP3 standard and other functions; Supports MP3, WAV format decoding, maximum storage capacity on 32G TF card, update audio files from TF memory card via USB data cable to connect computer.
Voice Module MP3 Player features:

- Support MP3, WAV decoder format.
- Support sample rate ( KHz): 8 / 11.025 / 12/16 / 22.05 / 24/32 / 44.1 / 48.
- 24-bit DAC output, support 90dB dynamic range, support 85dB signal-to-noise ratio.
- Fully compatible with FAT16 / FAT32 file system, 32G TF card with maximum support, 32G U disk support.

Lilypad Battery Support Button Cell 3V CR2032 features:
- Battery holder for your Lilypad projects
- For 20mm diameter battery type CR2032
- ON / OFF control
- Connection points: 4

A Mini WIFI board ESP8266 contains 16MB flash, external antenna connector and built-in ceramic antenna based on ESP-8266EX. Wemos D1 Mini Pro-16 Module + Esp8266 Wifi Series Wireless Antenna features:
- Compatible with Arduino, programming with the Arduino IDE, MicroPython, NodeMCU
- Supply voltage: 5V
- Logical levels: 3.3V - 16MB (128Mbit) flash
- 11 pins of input / output - I2C / one-wire interface, LOLIN I2C port
- 1 ADC (input: 0-3.2V) - built-in ceramic antenna - external antenna connector - Power switch - Includes external WIFI antenna with IPEX SMA adapter Wemos D1 Mini Pro-16 Module + Esp8266 Wifi Series Wireless Antenna features:
of esp8266:
- Supported protocols: 802.11 b / g / n
- Network support: 2 , 4 GHz

M12 M12 High Resolution Lens, 12MP, 113° FOV, 2.7mm Focal length, Compatible with Raspberry Pi High Quality Camera M12. No distortion.

Buzzer alarm to convert electrical to acoustic signals in robotics devices and Arduino projects.
Buzzer 5V Active Buzzer 4 to 7V DC features:

- Input voltage: 4V to 7V
- Diameter: 12mm
- Height: 9.5mm
- Spacing Pins: 7.6mm
- Maximum Current:

Mini ESP8266 ESP12E CH340 WiFi Development
NodeMcu module based on ESP8266 controller and programming in Lua language
NodeMcu it is equipped with 10 GPIO, PWM, I2C, 1-wire and ADC
It works as a standard WiFi 802.11 b / g / n 2.4 GHz
Wemos D1 Mini ESP8266 ESP12E CH340 WiFi Wireless Development features:

- Compatible with Arduino, programming with the Arduino IDE
- Power supply voltage: 5V
- LOGICAL LEVELS: 3.3V
- 11 input / output pins
- 1 ADC (input: 0-3.3V)
- 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 power management units Integrated

Transceiver based on the SI4432 Silicon Labs chip
Industry standard model
Capacitive components manufactured by Murata with 10ppm high precision glass
Outdoors - a distance of up to 1.5 km 1.5km radius SI4432 433MHz RF Telemetry features:
- Supply voltage: 1.8 ~ 3.6VDC
(Note: a voltage higher than 3.6 V will cause permanent damage to the module)
- Communication level: 0.7VDC ~ 3.6V (VCC refers to the module supply voltage)
- Working frequency: 425M ~ 525MHz (via software setting, the module uses 30M glass)
- Measured distance: 1500m (clear and open, maximum power, height 1.5m, air speed 1k)
- Transmission power: up to 20dBm (about 100mW)
- Air rate: 0.123k ~ 256Kbps (software adjustable, low airspeed recommended)