3pcs version

3Pcs ESP8266 ESP-12E Remote Serial Port WIFI Transceiver Wireless Module Description: ESP8266-12E is an enhanced version ESP8266-12, improve peripheral circuitry increases impedance matching, the signal output is better, whether it is stable or anti-jamming capability, have been greatly improved! For users before selecting the ESP-12, it does not matter even if the product has been made, enhanced version is fully compatible with previous firmware, the pin has added six IO ports on the basis of the ESP-12, SPI leads Note: We don't offer any supports,sorry for the inconvenience Package included: 3 x ESP8266 ESP-12E Remote Serial Port WIFI Transceiver Wireless Module  

3Pcs 15W TDA7297 Dual-Channel Amplifier Board For Arduino Features: AC / DC, 2.0 / dual channel / stereo,12V/2A when using, the output power of 15W +15 W, peak up 25W +25 W Can be accessed by two 4-8Ω 10-50W speakers A large volume of small size High signal to noise ratio Upgraded version of the radiator, wider and thicker, better cooling effect Fit for Bookshelf speakers, CRT televisions, radios, and other small amplifiers Specifications: 1. Working voltage: DC 9-15V 2. Power: 15W +15 W 3. Maximum power:30W+30W 4. Output Impedance: 4-8Ω Package included: 3 x TDA7297 Version Amplifier Boards

3Pcs ATMEGA328 328p 5V 16MHz Arduino-Compatible Nano Size Module Board Description: New version, Pro Mini 328 5V 16MHz, arduino-compatible High Quality components and soldering material Bootloader Ready, plug and play. Package included: 3 x Pro Mini 328 5V 16MHz arduino-compatible Notice from customer Mattias Schlenker: If uploading sketches using the Arduino IDE fails, follow these steps to update the bootloader: -Prepare an Arduino Uno, Mega or similar to act as ISP as described at http://arduino.cc/en/Tutorial/ArduinoISP -Wire it up as shown in flasbootloader_connected.png (Picture Reveiw of SKU099688) -Use Arduino IDE to flash the bootloader of the corresponding Pro/Pro Mini (5V, 16MHz) to SKU099688 or SKU066315

3Pcs CJMCU-MCP4725 I2C DAC Breakout Development Board Module Description: You’ve always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it! The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC). A DAC allows you to send analog signal, such as a sine wave, from a digital source, such as the I2C interface on the Arduino microcontroller. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects! This version of the CJMCU-MCP4725 Breakout fixes a few issues with the board including the IC footprint, the I2C pinout, changes the overall board dimensions to better fit your projects, and a few more minor tweaks. This board breaks out each pin you will need to access and use the MCP4725 including GND and Signal OUT pins for connecting to an oscilloscope or any other device you need to hook up to the board. Also on board are SCL, SDA, VCC, and another GND for your basic I2C pinout. Additionally, if you are looking to have more than one MCP4725 on a bus, the pull-up resistors on this board can be disabled just check the Hookup Guide in the Documents section below for instructions and tips on doing this. Feature: 12-bit resolution I2C Interface (Standard, Fast, and High-Speed supported) Small package 2.7V to 5.5V supply Internal EEPROM to store settings Package included: 3 x CJMCU-MCP4725 I2C DAC Breakout Development Board Module

Buy 3pcs New Version DC 14.8V 4 Slot 4 Series 18650 Battery Holder Box Case With 2 Leads And Spring for R210.00

Buy 3pcs NRF24L01+ Upgraded Version 2.4G Antenna Wireless Transceiver Module for R169.00

Buy 3Pcs ATmega328P Nano V3 Module Improved Version With USB Cable Development Board for R383.07

Buy 3pcs NRF24L01+ Upgraded Version 2.4G Antenna Wireless Transceiver Module for R179.00

Buy 3pcs ATmega328P Nano V3 Controller Board Improved Version Development Module for R647.83

Buy 3Pcs Geekcreit Christmas Tree LED Flash Kit Three Color Version 3D DIY Electron for R509.40

Buy 3Pcs Geekcreit ATmega328P Nano V3 Controller Board Improved Version Module Deve for R301.69

Buy 3pcs NRF24L01 Mini SMD 2.4GHz Wireless Module Power Enhanced Version SMD Receiver Transceiver Low Vo for R237.00

Buy 3Pcs Geekcreit Christmas Tree LED Flash Kit Three Color Version 3D DIY Electron for R464.02

Specifications: Support wireless Bluetooth audio receiver audio conversion board, you can upgrade your product to become a wireless Bluetooth Bluetooth audio equipment, only with 3w*2 power amplifier(3.7-5v voltage) Features: - Version: the TOOTH 2.1+EDR BTLUE specification, compatible with Bluetooth 3 and the following version - Support L2CAP/A2DP (AVCTP/AVDTP/AVCRP), used to receive stereo audio signals, through the protocol can control the audio transmitter up and down the operation, to support the simple matching / automatic back to the function, support MP3 format decoding, -Supports power amplifier enable control - DAC 16bit output high quality audio output, high signal to noise ratio - Support low energy consumption mode mode sniff, power saving mode Bluetooth Operation Instructions: 1. Open mobile phone Bluetooth settings; enter the mobile phone Bluetooth search, Bluetooth device name (mobile phone display device name customers can specify), (Note: mobile phone brand: Android system, IOS system, Win system, Symbian system, open the MeeGo method system Bluetooth function is different, different, the pairing process) pairing process takes about 30 seconds. 2.The second use of the password is not used, the phone directly on the corresponding speaker of the Bluetooth device name, such as "BIuetooth" can be connected to success. (some mobile phone system will prompt the password, the password is: 0000). Bluetooth receiving distance of 10 meters -15 meters When the connection is successful, in the phone's music player interface, click on the favorite music player, the speaker will play out the beautiful sounds of music. Package Included: 3 x Mini Bluetooth Receiver Module With 4Ohm Speakers Power Amplifier

Overview: The first expansion board for Nextion Enhanced HMI display. Enhanced and higher version Nextion displays supports 8 GPIO, thus we can use this expansion board to control Nextion. The board has 6 buttons, which include Esc, Enter, Left, Right, UP, Down. Also, indicating buzzer and LEDs are included. Note: this expansion board can only work with Nextion Enhanced Display, not for basic Nextion Display. Package included: 3 x Expansion Board 3 x 8P FFC Cable

Description: This is the old version of WeMos D1. 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0) 1 analog input(3.3V max input) A Micro USB connection A power jack, 9-24V power input. Compatible with Arduino Compatible with nodemcu Infos: click here!! Package included: 3 x WeMos D1 WiFi UNO ESP-12E Based ESP8266 Shield For Arduino Compatible

Feature: Core version: UNO XTL: Outside 16MHZ Working voltage: 5V Note: Suitable for Arduino UNO R3 and Arduino 2011 UNO development board. Package included: 3 x ATmega328P-PU Microcontroller

Description: 1. Use aluminum alloy U disk shell to install internal motherboard. 2. The interface definition is directly marked on the enclosure. 3. 5V, 3.3V at the same time to provide external use, convenient for you to connect 5V and 3.3V target board. 4. The shell characters use laser engraving, never fade off and permanent clarity. 5. The internal motherboard with 500MA self recovery fuse, completely protect your expensive computer motherboards. 6. Red and blue double color LED indicator lamp, it is convenient for you to observe the working state of ST-LINK V2 at all times. 7. Distribution dupont wire, so that you can easily deal with the wire sequence of different target board. 8. The outer packing is made of anti-static bag and sealed pack by automatic sealing machine. It is safe and reliable and not afraid of static electricity or water. 9. Note: r ed, black, gold, green, grey, white, blue, pink color random delivery Features: 1. Support a full range of STM32 SWD interface debugging, 4 wire interface simple (including power), fast speed, work stability; interface definition shell is directly marked. 2. Support a full range of STM8 SWIM download debugging (common development environment such as IAR, STVD and so on are supported); support software version is as follows: 1) XTW LINK ST Utility 2.0 and above 2) STVD 4.2.1 and above 3) STVP 3.2.3 and above 4) IAR EWARM V6.20 and above 5) IAR EWSTM8 V1.30 and above 6) KEIL RVMDK V4.21 and above 6 and above 3. Support firmware automatic upgrade, factory firmware has been upgraded to the latest V2.J17.S4. 4. Increase the 5V power output, output I / O port are protected, not afraid of operating mistakes caused by LINK, ST, V2 damage. 5. The interface uses pure copper gold-plated 2.54 space simple ox horn socket with 20CM Dupont wire 6. Using U aluminum alloy shell to protect the motherboard 7. With data package, data contains: 1) XTW, LINK, ST, V2 driver; 2) KEIL, MDK (4.60) development environment (and other common development environment) 3) IAR, STM8 (1401) development environment (and other common development environment) 4) STVD STM8 development environment (and other common development environment) 5) A number of classic STM32 data (including a large number of examples of source code and video tutorials) 6) A number of classic STM8 data (including a large number of examples of source code and learning experience) Package included: 3 x 3.3V 5V XTW ST-LINK V2 STM8 / STM32 programmer with 20cm dupont wire

Feature: Support USB and 3.5 output Transmission range: 10m Bluetooth version: 2.1 Channel: 2 Package includes: 3 x Bluetooth Adapter

Module parameters: Scope: High-power LED constant current driver, rechargeable lithium batteries (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery) charging, solar panels, wind generators Input voltage: 7-40V Output voltage: continuously adjustable (1.25-35V) (applied to the input voltage is higher than the output voltage applications can boost) Output Current: 8A, 10A maximum time within the (power tube temperature exceeds 65 degrees, please add cooling fan, 24V 12V 5A turn within generally be used at room temperature without a fan) Constant Range: 0.3-10A (adjustable) module over 65 degrees, please add fan. Turn lights Current: current value * (0.1), turn the lamp current and constant value linkage, such as constant value of 3A, turn the lamp current is set to a constant current of 0.1 times (0.1 x 3A = 0.3A), when the constant 2A, when adjusted to the current value, then turn the lamp current constant current of 0.1 times (0.1 x 2A = 0.2A). This version is a fixed 0.1 times (actually turn the lamp current value is probably not very accurate) is full of instructions for charging. Minimum pressure: 1V Conversion efficiency: up to about 95% (output voltage, the higher the efficiency) Operating frequency: 300KHZ Output Ripple: about the ripple 50mV (without noise) 20M bandwidth (for reference) Input 24V Output 12V 5A measured Operating temperature: Industrial grade (-40 ??to + 85 ?? (please note the actual use of the power tube temperature, the temperature is too high, please enhance heat dissipation) No-load current: Typical 20mA (24V switch 12V) Load regulation: ± 1% (constant) Voltage Regulation: ± 1% Constant accuracy and temperature: the actual test, the module temperature changes from 25 degrees to 60 degrees, the change is less than 5% of the current value (current value 5A) Dynamic response speed: 5% 200uS Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease) Indicator: color indicator, charging indicator light red, fully charged light green (no load is green) Output short circuit protection: Yes, constant current (constant current setting values) Input reverse polarity protection: None, Output anti-anti-perfusion: no, for charging the battery needs additional two diodes! Connection: Terminals Package included: 3 x DC-DC Step Down Adjustable Power Supply Module

Description: Mini version NodeMCU board is developed by doit company, which is made by double pcb. This board encapsulated by the newest 4M Flash ESP8266-12F module. So it is more stable and more better performance. Each board from doit company is tested. Feature: Use the full new (not old) Ch340 chip Novel design for the more stable usb Each board is strictly tested Compatible with Arduino: https://github.com/esp8266/Arduino Compatible with NodeMCU: www.nodemcu.com Package included: 3 x mini NodeMCU board 6 x 8pins row needles 6 x 8pins row females

Specifications: Working voltage: DC 3.8V-5.5V Working current (5V): typical current 6mA Input and output signals (3 lines): GND, VCC is power, and VCC is 3.8V-5.5V Obstacle detection time (range from obstacle-free to obstacle-free or obstacle-free to obstacle-free): Working Principle: Sensors actively emit infrared light, according to reflected light detection, if detected obstacles, OUT foot output 0, otherwise 1. Detection distance (test environment, indoor, maximum power, Voltage 5V, power consumption 6.5ma): 1. white walls: 100cm 2. IBM black computer cover: 20cm 3.1 fingers: 18cm 4. palm: 30cm 5. a transparent pearl pen: 20cm Features: The new version has been greatly improved and has been gradually improving. 1. super miniature and designed with mechanical mounting holes. 2. Low power consumption, wide operating voltage range. The transmitting signal adopts modulation signal, long distance, good anti-jamming, and can work outdoors under non-direct sunlight (the distance will be shorter). 3. distance adjustable, ranging from 3cm-100cm. 4. Obstacle avoidance uses window technology to avoid the problem of critical zone. The sensor works stably. The user can directly use the output signal without considering the signal jumping. Usage: There are many precise adjustable potentiometers on the board, which can be adjusted according to the use environment. The adjusting range is from 3cm to 100cm. Because it is a reflection principle, it is related to the specific reflection target and can be adjusted according to the situation. The circuit board has a red LED that emits light when obstacles are detected. OUT output continues to be low. Obstacle-free is OUT output continues to be high. Sensor active infrared reflectance detection, so the reflectance and shape of the target is the key to the detection range, in which the black detection range is the smallest, the white is the largest; small area object distance, large area distance. Package Included: 3 x Obstacle Avoidance Sensor

Specification: V2.0 version added power conversion module and IO port level conversion circuit for the 3.3V MCU and 5V chip Resolution: Pressure range: 20 - 110 kPa Onboard intelligence Sampling rate: maximum 128 Hz Compensation, direct reading (don't need software): 20bit pressure measurement (Pascal) 20bit measurements of height (metres) 12bit temperature measurement Parameters: Absolute pressure measuring range: 20 to 110 kPa Relative measuring accuracy: ±0.05 kPa Effective resolution: 1.5Pa / 0.3m Working temperature range: -40 to 85 °C Power supply voltage: 2.5 to 5 V Logic IO port: 2.5 to 5 V I/O power supply voltage: 1.62 to 3.6 V Power: Standby mode: 2μA Low power mode: 8.5μA, 1Hz sampling I2C digital output interface 2* programmable interrupt pin Built in 32 sample buffer of FIFO Compensated data output: 20 the pressure data, output per unit of Pascal 20 height data, output per unit of meter 12 temperature data, output per unit of degree C Package includes: 3 x Module

Description: UNO R3 board is 100% compatible with original Arduino, now it has perfect quality and performance. Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements theProcessing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux). This is the new Tosduino Uno R3. In addition to all the features of the previous board, the Uno R3 now uses an ATmega16U2 instead of the ATmega8U2 chip. This allows for faster transfer rates, no drivers needed for Linux or Mac (inf file for Windows is needed), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc. Note: The TOSduino Uno R3 requires the Arduino 1.0 drivers folder in order to install properly on some computers. We have tested and confirmed that the R3 can be programmed in older versions of the IDE. However, the first time using the R3 on a new computer, you will need to have Arduino 1.0 installed on that machine. The small chip is ATmega16U2, the 28 pin DIP socket chip is ATmega328-pu. Note: This version does not includes USB cable Interaction: 2013-08-08 Cathal Keady's question: Can item SKU066313 be powered directly from using the USB port or do I need to purchase a power supply for it. my answer: This item has not built-in battery, so it can not be charged. With that USB cable connect to computer, you can use it. There is no need of power supply. Package included: 3 x UNO R3 module