MAX98306 3.7W Stereo Amplifier

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.

Mini Submersible Water Pump DC 5.5-12V 200L / H 3W
Mini Submersible Water Pump DC 12V 200L/h 3W ARDUINO features:

* Operating voltage: 5.5-12V * Max flow: max. 200 l / h * Maximum pumping height: 40cm- max. 150cm * Cable length: 140cm * Jack DC 5.5x2.1mm connector (ext / int) * Outlet diameter: 8 mm * Dimensions: 36mm x 25mm

Work with Bluetooth compliant devices including notebook, PDA, digital camera,printer and mobile phone.
Mini Dongle Adapter Bluetooth USB V2.0 Windows XP/VISTA/7 features:
- Bluetooth specification V2.0 - Supporting profiles: networking, dial-up, fax, LAN access and handset - Operation system Windows98, 98se, Me, 2000, XP, Vista, Windows7 - Receiving/sending range: 100m

Camera module for Arduino, Raspberry Pi 2 and Pi 3, B and B +. VGA camera 640x480 OV7670 B 0.3MPx 30fps Cmos features:
> - Input voltage 2.5V-3V
- Operating power 60mW / 15fps VGA YUV
- Resolution VGA 640x480 pixels (30fps)
- Maximum frame rate 30fps VGA
- Flicker 50Hz / 60Hz automatic detection
- Lens size 1/6 "
- Angle of view 25 °
- Sensitivity 1.3V / (lux- seg)
- SCCB (Serial Camera Control Bus) interface
- Output format · 8 Bits
- YUV / YCbCr 4: 2: 2
- RGB 565/555/444
- GRB 4: 2: 2
- RAW RGB data
- High sensitivity Light operation
- Automatic adjustment
- Color level saturation - Edge enhancement
- Noise level

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

Voltage Sensor Module 0.02445V ~ 25V. When the module is powered by 5V the voltage detection does not exceed 25V, and when the module is powered with 3.3V the voltage detection does not exceed 16.5V. Arduino Compatible.

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 features:
- Based on the NXP PN532 chip, it can be used for non-contact communication of 13.56M.
- Greater effective communication distance of 3 cm.

The ADS1115 is an external 16-bit ADC + a built-in programmable gain amplifier (or PGA), which can be very useful for certain Arduino and ESP8266 projects. This is ideal when more resolution or more analogue pins are required. You get better accuracy, as well as relieving the processor of this burden.

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!

The network module communicates with the Arduino type board through the SPI protocol ideal for projects with ARDUINO, PIC, AVR, STM32. ENC28J60 Ethernet LAN Network Module for Arduino AVR LPC STM3 features:
- Chip ENC28J60 Microchip
- Module: 10Base-T
- 3.3V power
- SPI interface
- 25Mhz speed
- LED status LED
- Hanrun network transformer
- Network Interface board HR911105A
- Operating temperature: -40ºC to + 85ºC
- Dimensions: 55x 35x 16 mm