WTV020M01 mp3 voice module with 1 GB storage capacity

3.5mm Audio Jack Breakout Headphone Video Audio MP3 Jack Module. This female jack connector adapter 3.5mm audio soldered on a PCB board, it is ideal to use in our projects. TRRS connectors are the audio-style connectors seen on some phones, MP3 players and development boards. TRRS stands for "Tip, Ring, Ring, Sleeve", reflecting the fact that unlike a standard stereo connector, this one actually has three conductors and a ground. 

Allows control: - Up to 2 bidirectional current motors
- Or 1 stepper motor Shield is compatible with NodeMcu ESP8266 CP2102 WIFI Development Board ESP8266 WiFi Motor Drive L293D Expansion Shield Board ESP12E NodeMcu features:
- Minimum operating voltage: 4.5 V
- Maximum operating voltage: 36 V
- Maximum current: ± 1.2 A
- Logic voltage: - 2.3V <= HIV <= VIN (high)
                        - 0.3V <= VIL <= 1.5V (low)
- Controller L293D
- Measures: 58x42 mm ESP12 port control kit: - D1, D3 - motorA
- D2, D4 - motorB

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 - CP2102 Chip
Characteristic:
ESP 12E ESP8266 ESP12E NodeMcu Lua Wireless Development Board CP2102 WiFi features:

- 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
- Integrated TCP / IP stack
- PLL, regulators and integrated power management units
- Output power: 0 , 15 (W); + 19.5dBm in 802.11b mode

WT32-SC01 development board with Esp32 from Espressif. 3.5 inch 480 x 320 TFT LCD touch screen, 4MB SPI Flash and 8MB PSRAM.

The Bluetooth HC-06 module is one of the best options for projects where you need wireless communications. Arduino Wireless Module HC-06 HC06 features:
- CSR BC417 Chipset
- Power: 3.3V
- Bluetooth version V2.0 + EDR
- Frequency: 2.4GHz band ISM
- Modulation: GFSK
- Range approx. 10m
- Security: Authentication and encryption.
- Speed- & gt; Asynchronous: 2.1Mbps (Max) / 160 kbps; Synchronous: 1Mbps / 1Mbps
- Supports AT commands for configuration through a serial port
- Working temperature: -20 ºC to +75 ºC - Working current - pairing: 80 mA
- Transmission: 8mA
- Size: 28 x 12mm

NRF24L01 Adapter + Wireless Transceiver 2.4GHz Socket Arduino features:
- The NRF24L01 + module is powered with 3.3V
- This adapter module includes a 3.3V voltage regulator
- You can connect the NRF24L01 module on it at 5V voltage
- Dimensions of PCB: 25x 18mm
- Quantity: Adapter 1 unit

Wired Bone Conductor Transducer - 8 Ohm 1 Watt
This amazing speaker does not have a movable cone like most From the speakers you've seen, instead, a small metal rod is wrapped with the voice coil.
When the current is driven through the coil, the magnetic field makes a piece of metal expands and contracts, if pressed against a flat surface or cavity makes it a speaker! Often these size transducers are pressed against the jaw or ear bone to turn the skull into a speaker socket.
The effect is a perfect quality sound that comes from your head and no one else can hear it. You can also press it against your elbow bone and stick a finger in your ear to listen to the audio transmitted through your arm!

This is a simple slide switch for LilyPad. Use it as a simple On / Off switch, or to control LEDs, buzzers, sensors, etc.
The switches in each panel have a capacity of 4V to 300 mA, but will operate at 5V with a current reduction.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Slide Switch Board 2 Positions Interruptor features:
- Switch two positions: On (ON) / Off (OFF)
- Density of the PCB: 0.8 mm
- Size: 7.75x18.1 mm