10 Best Arduino Bluetooth Reviewed

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Arduino UNO R4 WiFi [ABX00087] - Renesas RA4M1 / ESP32-S3 - Wi-Fi, Bluetooth, USB-C, CAN, DAC, OP AMP, Qwiic Connector, 12x8 LED Matrix

The Arduino UNO R4 WiFi combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless connectivity power of the ESP32-S3 from Espressif. On top of this, the UNO R4 WiFi offers an on-board 12x8 LED matrix, Qwiic connector, HID support, VRTC, and OFF pin, covering all potential needs makers will have for their next project.
Expanded memory and faster clock with extra on-board peripherals: The UNO R4 WiFi empowers you with increased memory and a faster clock speed, enabling more precise calculations, effortless handling of complex projects, and the ability to tackle demanding tasks with ease. Additionally, it introduces a range of on-board peripherals, including a 12-bit DAC, CAN BUS, OP AMP, OFF pin, VRCT pin and Qwiic connector, providing expanded capabilities and design flexibility.
Hardware compatibility with UNO hardware and larger input voltage range: The UNO R4 WiFi maintains hardware compatibility with the UNO form factor and operates at 5V. It now supports a wider input voltage range, up to 24V, enabling seamless integration with motors, LED strips, and other actuators. This allows for easy porting of projects developed with previous UNO form factor boards and simplifies projects by utilizing a single power source.
Wi-Fi/Bluetooth and Arduino Cloud compatibility: The UNO R4 WiFi combines an ESP32-S3 coprocessor for seamless Wi-Fi and Bluetooth connectivity. It frees up the RA4M1 microcontroller for other tasks. With built-in Wi-Fi and Bluetooth, makers can create IoT projects, benefiting from standardized APIs and existing projects. The UNO R4 WiFi is fully compatible with Arduino Cloud, allowing remote data storage, interactive dashboards, Over-the-Air uploads, and variable sharing among boards.
LED matrix creativity: The UNO R4 WiFi boasts a vibrant 12x8 red LED matrix (96 dots) perfect for creative projects, animating visuals or plotting sensor data, all without requiring extra hardware. Users can utilize the provided API and tutorials for manual LED control via sketch code. Access a gallery of pre-made animations and leverage our online tool for easy creation of custom visual effects.

HiLetgo 2pcs HC-06 RS232 4 Pin Wireless Bluetooth Serial RF Transceiver Module Bi-Directional Serial Channel Slave Mode for Arduino

Works with any USB Bluetooth adapters, running in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane
Core module uses HC-06, leads from the module interface includes VCC, GND, TXD, RXD, reserve LED status output pin, the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid.
Small size, low power consumption,high sensitivity for send and receive. Bluetooth version: V2.0+EDR &Operating voltage: 3.3V &Host Interface:UART &Storage Temperature:-40℃~+150℃&Signal coverage: 30ft &Item size: 4.3 * 1.6 * 0.7cm &Item weight: 3g.
The module is mainly used for short-range data wireless transmission,such as Bluetooth wireless data transmission,Industrial remote control, telemetry,Traffic, underground positioning, alarm,Smart home ect.
Industrial serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc. Computer and peripheral devices.

DSD TECH HC-05 Bluetooth Serial Pass-through Module Wireless Serial Communication with Button for Arduino

Bluetooth module HC-05 Master and slave Two in one module. Please note: iOS devices (iPhone) are not supported
Use the CSR BC417 mainstream bluetooth chip, bluetooth V2.0 SPP protocol standards
Module working voltage 3.6 V to 6V
Default rate of 9600,default pin:1234, the user can be set up.click the button into AT MODE
Can be switched via AT commands as master or slave mode , the device can be connected via AT commands specified

Arduino Nano 33 IoT [ABX00027]

The ease of use of a Nano board with the addition of secure IoT and BT connectivity
Small (45mm x 18mm), robust and powerful board; 3.3V variant of the Nano family. Arm Cortex-M0+ microcontroller and a pre-certified ESP32-based WiFi and Bluetooth module from u-blox
Clock up to 48MHz, Flash 256KB, SRAM 32KB, Secure WiFi and Bluetooth connectivity with a 6-axis IMU, ECC608A crypto chip provides IoT security. Two 15 pins connectors (one on each side) that are pin to pin compatible with the original Arduino Nano
Pre-certified module with external processor ensures maintaining RF compliance when writing application code.Run directly from high voltages from lead or multi-cell Lithium-ion batteries providing 3.3V power supply to peripherals at significant output current
On-board DC-DC power supply enables the board to be powered up to 21V maintaining high efficiency and offering a lot of current to external devices without overheating

HiLetgo 2pcs CC2540 CC2541 AT-09 Serial Wireless Module BLE 4.0 Bluetooth Module Compatible HM-10

Support AT command, users can change the serial port baud rate, device name, pairing password and other parameters as needed, use flexible.
It adopts CC2541 chip of American TI Company, configures 256Kb space, and follows V4.0 BLE Bluetooth specification.
Input voltage: 3.3V/5V only needs a set of power supply.
This module supports UART interface and supports SPP Bluetooth serial port protocol.
Compatible HM-10

Arduino Nano ESP32 Without headers [ABX00092] ESP32-S3, USB-C, Wi-Fi, Bluetooth, HID Support, MicroPython Compatible

Dive into IoT with ease: With the Nano ESP32, there are no more excuses to embrace your exploration of IoT and MicroPython. It delivers a compelling combination of compactness, wireless connectivity, programming versatility, cloud compatibility, and HID support, providing everything you need to unleash your creativity, realize your project ideas, and embark on a journey of endless possibilities.
Wi-Fi and Bluetooth connectivity: With the Nano ESP32, you can tap into the impressive capabilities of the ESP32-S3 microcontroller, a widely recognized and acclaimed choice in the IoT realm. Enjoy reliable and high-speed wireless connectivity, enabling your projects to effortlessly connect to networks, communicate with other devices, and access the vast resources available on the internet.
Arduino and MicroPython support: The Nano ESP32 provides full support for both Arduino and MicroPython programming languages, allowing you to effortlessly switch between the two. Leverage your existing Arduino knowledge or venture into the exciting realm of MicroPython with ease. Beginners can also benefit from the introductory course offered, ensuring a solid foundation for their MicroPython journey.
Arduino IoT Cloud compatible: The Nano ESP32 integrates with the Arduino IoT Cloud, enabling you to effortlessly create IoT projects. With just a few lines of code, you can connect your devices, collect data, and remotely monitor and control them using the Arduino IoT Cloud app. The Nano ESP32 takes care of the necessary security measures, ensuring your data remains protected while you focus on developing innovative IoT solutions.
HID support: Take your projects to the next level with HID (Human Interface Device) support offered by the Nano ESP32. This feature allows you to emulate various human interface devices, such as keyboards or mice, over USB. By emulating these devices, you can create unique and interactive experiences, enabling seamless interaction between your projects and computers.

DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Module with 4PIN Base Board for Arduino UNO R3 Mega 2560 Nano

Low Energy: With HM-10 bluetooth 4.0 module, you can add Bluetooth features to your project and support iphone4s or later.
DSD TECH Brand 4pin Base Board: Through this base board, leads to VCC, GND, TX, RX. You can be very convenient to connect to your arduino project
Led status indication: when the connection is established will always light, disconnection is flash
iBeacon Support:You can make this module into ibeacon mode.So you can have your own ibeacon.it also Supports Apple Notification Center Service (ANCS)
working voltage 3.6 V to 6V,Default rate of 9600. DSD TECH back this Bluetooth 4.0 LE module with ONE Year WARRANTY. If you meet any question, please contact us, we will fix your issue within 24 hours.

HiLetgo HC-05 Wireless Bluetooth RF Transceiver Master Slave Integrated Bluetooth Module 6 Pin Wireless Serial Port Communication BT Module for Arduino

The factory setting is slave mode, but you can set this module to master mode so that you might be able to connect to other Bluetooth 2.0 devices.HC-05 Wireless BT Module
HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your Arduino project, and then you can use your android phone to control some gadgets, such as: switch, LED.
Master and Slave 2-IN-1 HC 05 Module:Working Voltage 3.6V to 6V , Default baud rate:9600,Default pin:1234
Button: Press the button, the module enter the AT mode. AT commands are executed only in AT mode.
6 PIN Dopunt Cable : with this Dupont Cable, you can easily connect this HC-05 Bluetooth module to your Arduino Board

A Pair of DX-BT27-A Bluetooth Module Long Range Up to 420m BLE 5.1 Wireless Bluetooth TF Transceiver Module for Arduino Compatible with Android/iOS, Including Master and Slave

Feature: This is the paired version of the BT27-A master&slave module, which includes one master bluetooth module and one slave bluetooth module. It has been paired and can be directly connected after being powered on. Note: The master module can only be connected with the slave modules sold in our store, and cannot be connected with any other model Bluetooth module
Multiple Connection Methods: 1.Can search connection Manually; 2.With MAC address code, it can scan QR code for connection. Compatible with Android/iOS(iPhone). Working Voltage:3.3V to 5V. Supported baud rate: 2400,4800,9600,19200,38400,57600,115200
Long Range: The connection distance between the BT27-A slave and the mobile phone can reach 140 meters, and the connection distance between the BT27-A master and the BT27-A slave can reach 400 meters(This distance data is the result of testing in an unobstructed and open area. If it is not within the visible range during use, please use the measured results as the main one.)
Notice: Because this module is BLE 5.1 serial port protocol module, so the PC side cannot use the built-in bluetooth or bluetooth adapter for communication.If you need to communicate with slave module by computer, it requires the master module to connect to the computer and use the computer serial port assistant to communicate.For the specific process, please refer to "Use the master Bluetooth to communicate with the module" and "DX-BT24 series Bluetooth module_Main mode_ Application Guidelines".You can find out them on our offcial website
Technical Support: Out of the box, plug and play. You can find out testing softwares,user's manuals,devlopment documents,and all resources related to this bluetooth module on our offical website. If you encounter any issues, please contact us by Amazon email, and we will resolve your issues within 24 hours

ACEIRMC 4pcs HC-06 RS232 4 Pin Wireless Bluetooth Serial RF Transceiver Module Bi-Directional Serial Channel Slave Mode for Arduino

Works with any USB Bluetooth adapters, running in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane
Core module uses HC-06, leads from the module interface includes VCC, GND, TXD, RXD, reserve LED status output pin, the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid.
Small size, low power consumption,high sensitivity for send and receive. Bluetooth version: V2.0+EDR &Operating voltage: 3.3V &Host Interface:UART &Storage Temperature:-40℃~+150℃&Signal coverage: 30ft &Item size: 4.3 * 1.6 * 0.7cm &Item weight: 3g.
HC-06 Bluetooth Serial Pass-Through Module Wireless Serial Communication Compatible for Arduino
The module is mainly used for short-range data wireless transmission,such as Bluetooth wireless data transmission,Industrial remote control, telemetry,Traffic, underground positioning, alarm,Smart home ect.

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