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TTGO T2 ESP32 0.95 OLED DEVELOPMENT BOARD (WIFI+BLUETOOTH+SD CARD)
US$29.95
This TTGO T2 is a higher version development board of ESP32. This contains integrated ESP32-WROOM-32 chip, 0.95 OLED Modules and SD card slot. The ESP32 WiFi and Bluetooth chip is the latest generation of Espressif products. It has a dual-core 32-bit MCU, which integrates WiFi HT40 and Bluetooth/BLE 4.2 technology inside. Compared to the ESP8266 (the previous generation), the ESP32 has a significant performance improvement. This board is specially concentrated to integrate OLED display with ESP32 chip to make various IOT projects easy.
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TTGO MICRO-32 V2.0
US$13.93
This is a TTGO Micro-32 small Embedded development board and compact size module for ESP32-PICO-D4 SIP. This is very similar to ESP-32 WROOM and has all same functions. The size of micro-32 is 45% smaller than ESP-32. It has inbuilt Bluetooth and WIFI modules with IPEX antenna connector. The package includes only module not antenna.
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nRF52840 Bluetooth 5.0 Evaluation Kit
US$36.17
NRF52840 Eval Kit is a development/evaluation kit based on nRF52840, features Arduino / Raspberry Pi connectivity, and several common used peripherals. It supports the new generation Bluetooth 5.0, compared to Bluetooth 4.0, the data rate is twice, up to 2Mbps, the transfer distance is quadruple. Based on the ARM Cortex-M4F architecture, the CPU frequency achieves up to 64MHz. Bluetooth MESH and 2.4GHz radio are also available, that means higher performance, and more suitable applications. Thanks to the onboard Arduino / Raspberry Pi compatible headers, both Arduino shields and Raspberry Pi HATs can be attached at the same time, make it easy to use more expansion resources.
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nRF52840 Bluetooth 5.0 Module, Small & Stable
US$20.99
Core52840 is a Bluetooth 5.0 module based on nRF52840, it is pretty small in size, yet still provides stable and reliable performance, can be directly integrated into kinds of products.
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Beetle BLE - The smallest Arduino bluetooth 4.0 (BLE)
US$24.75
The Beetle Ble (Former name as Bluno Beetle)  is  an Arduino Uno based board with  bluetooth 4.0 (BLE).  It is probably thesmallest Arduino BLE board in the market.  It uses standard Arduino IDE to upload codes via  without any extra library and drivers.  This Beetle BLE is another milestone in the Beetle line, which makes DIY users have more options in the project design. It is fully compatible with Bluno in instructions and procedures. Support Bluetooth HID and ibeacon modes.
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ARD-HC-08 HC-08, 3.6V - 6V Bluetooth Module - Slave mode BLE 4.0
US$16.94
Add Bluetooth connectivity to your project! Operates from 3.6v to 6v, which means you can use interface this simple device to any micro controllers. The added simplicity of the six pre-soldered connectors results in a very easy n' quick plug and play for any future projects. This device can work up to 10 meters, the voltage supplied must not exceed 6v and it is not reverse polarity protected. Use this device for any project you may have in mind and rest assure with this Bluetooth based device will consume less power than a traditional WIFI Module! No Firmware = No Fuss, logic Levels of RX & TX are 3.3V.
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MOD-BC05-B BC05-B Bluetooth Stereo Audio Receiver Module
US$13.85
This small and powerful device is capable of establishing a connection with any Bluetooth audio devices using A2DP, AVRCP transmission and remote control protocol such as: Bluetooth-enabled mobile phones, Bluetooth stereo audio transmitter module, Bluetooth adapter, etc.
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2479-ADA Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE)
US$26.95
Would you like to add powerful and easy-to-use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE UART Friend! The Bluefruit LE UART Friend makes it easy to add Bluetooth Low Energy connectivity to anything with a hardware or software serial port. We even have nice hardware flow control so you won't have to think about losing data. Connect to your Arduino or other microcontroller or even just a standard FTDI cable for debugging and testing.
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TEL0120 DFRobot BLE4.1 Module
US$26.25
BLE4.1 Module is DFRobot newly developed Bluetooth 4.1 transmission module, adhering to the same usage of Bluno, and increasing the star network function, KISS connection (Approach Connection). The new Bluetooth is designed based on BLE 4.1 technology. It has low power consumption and other special features. In the BLE transmission, the point-to-point output rate is 4Kbps, equivalent to the original Bluno twice the rate.
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TEL0111 ESP32 WiFi & Bluetooth Dual-Core MCU Module
US$13.00
The ESP32 WiFi and Bluetooth chip is the latest generation of Espressif products. It has a dual-core 32-bit MCU, which integrates WiFi HT40 and Bluetooth/BLE 4.2 technology inside. Compared to the ESP8266 (the previous generation), the ESP32 has a significant performance improvement. It is equipped with a high-performance dual-core Tensilica LX6 MCU. One core handles high speed connection and the other for standalone application development. The dual-core MCU has a 240 MHz frequency and a computing power of 600 DMIPS. In addition, it supports Wi-Fi HT40, Classic Bluetooth/BLE 4.2, and more GPIO resources.
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2633-ADA Adafruit Bluefruit LE SPI Friend - Bluetooth Low Energy (BLE)
US$34.92
The Bluefruit LE SPI Friend makes it easy to add Bluetooth Low Energy connectivity to anything with 4 or 5 GPIO pins. With SPI, you don't have to worry about baud rates, flow control, or giving up a hardware UART port. Connect to your Arduino or other microcontroller using the common four-pin SPI interface (MISO, MOSI, SCK and CS) plus a 5th GPIO pin for interrupts (to let the Arduino know when data or a response is ready).
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WAVE-114-CB Bluetooth 4.0 NRF51822 Core Board
US$13.93
Core51822 is a wireless module based on nRF51822 - the Multiprotocol Bluetooth® 4.0 low energy/2.4 GHz RF SoC designed for ULP (ultra low power) wirelesss applications. Features include: 2.4 GHz multiprotocol RF transceiver, ARM® Cortex™-M0 32 bit processor, 128 bit AES HW encryption, 256kB flash & 32kB RAM, Programmable Peripheral Interconnect (PPI), Digital interfaces: SPI, I2C, UART, 10 bit ADC.
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MOD-AMP Bluetooth 4.0 Audio Digital 25W + 25W Amplifier Based on TDA7492P
US$31.80
This device is a simple audio amplifier that is based on the TDA7492P IC and uses high quality surface mount components. Plug in anywhere from 8 to 25 volts in the DC Jack, use your android, Iphone or Computer to pair with this device like any other Bluetooth device and play music anywhere within 20 meters! No software downloading or uploading required. Connect the left and right speaker to the green terminal blocks and enjoy high quality audio from this credit card size device.
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WAVE-114 Bluetooth 4.0 Motherboard
US$13.99

BLE400 Features: Onboard battery holder, multi power supplies are available. All the IOs are accessible for easy expansion. Integrates CP2102 for debugging. LEDs and user keys, compatible with other official boards, easy to use.

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EF01021 BLEduino - BLE For Arduino
US$31.62
The BLEduino board is the first of its kind in intergrating BT 4.0(BLE) module into Arduino Uno, making it an ideal prototyping platform for both software and hardware developers to go wireless. You will be able to develop your own smart bracelet,smart pedometer and more. Through the low- power Bluetooth 4.0 technology, real-time low energy communication can be made really easy.
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