The Beetle Ble (Former name as Bluno Beetle)  is a board based on Arduino Uno with Bluetooth 4.0 (BLE).  It is probably the smallest 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. You may also check the Bluetooth microcontroller selection guide to get more information.

The Beetle BLE is a super tiny and low-cost Arduino-compatible board with Bluetooth 4.0. The Beetle BLE can be used for disposable projects, such as DIY projects, workshops, gift projects, E-Textiles wearable, and educational. For students and makers who can not afford too much on hardware purchasing, Beetle can be a great solution.

Just like a native Arduino board, but with Bluetooth 4.0. An APP called Play Bluno is available on IOS and Android which gives quick access to this little tiny board.
It not only supports USB programming but also wireless uploading method. With the V-shaped gilded I/O interface, it is convenient to screw conductor wire on it, which could a good choice in the wearable market.

Features:

Useful Links:

HC-02 Bluetooth serial communication module is based on the Bluetooth v2.0 Bluetooth protocol data transmission module, high stability, ultra-low power consumption, industrial-grade Bluetooth data transmission module.

Users do not need to care about complex wireless communication configuration and transmission algorithms. They only need to connect to devices through the TTL serial port. Powered the HC-02 slave module, and can be connected to the mobile phone for data transmission. In addition, it can be used with HC-05 or HC-06 hosts (matching code, default is 1234) to connect, can replace a traditional serial line, save wiring work, use it’s very flexible.

Pinout Diagram:

How to Use the HC-02 Bluetooth module: 

The HC-02 has two operating modes, one is the Data mode in which it can send and receive data from other Bluetooth devices and the other is the AT Command mode where the default device settings can be changed. We can operate the device in either of these two modes by using the key pin as explained in the pin description.

It is very easy to pair the HC-02 module with microcontrollers because it operates using the Serial Port Protocol (SPP). Simply power the module with +5V/+3.3V and connect the Rx pin of the module to the Tx of MCU and Tx pin of module to Rx of MCU as shown in the figure below

Features

1. Support transparent transmitted with iPhone, integrated with the advantage of Bluetooth 4.0 BLE (Support iPhone 4s version above, cannot connect with the phone’s Bluetooth directly, need a BLE Bluetooth serial port assistant)
2. Compatible with HC-05 and HC-06 Bluetooth serial port module, Bluetooth 2.0 with EDR, 2 MBPS – 3 MBPS modulation
3. Built-in 2.4 GHz antennas, users need to debug the antenna
4. Support transparent transmitted with Android smartphone and notebook computer
5. Support transparent transmitted with desktop computer via HC-06-USB

Specifications:

1. Model: HC-02
2. Working Frequency: 2.4G
3. Communication Interface: UA pin 3.3V TTL level
4. Input Voltage: 3.2 ~ 6V
5. Operating Voltage: 3.0 ~ 3.6V
6. RSSI Support: not support
7. Communication Level: 3.3V
8. Transmitted Power: 6dBm (max)
9. Reference Distance: 10m
10. Air Data Rate: 2Mbps
11. Antenna Interface: Internal PCB antenna
12. Communication Current: 30mA
13. Receiving Sensitivity: -85dBm @ 2Mbps
14. Work Humidity: 10% ~ 90%
15. Work Temperature: -25°C ~ 75°C
16. Storage Temperature: -40°C ~ + 85°C
17. Module Size: 37 x 15.6mm

Package Includes:

1 x HC-02 6pin Bluetooth Module Compatible with HC-05 / HC- 06

Seeed Studio XIAO Series are diminutive development boards, sharing a similar hardware structure, where the size is literally thumb-sized. The code name “XIAO” here represents its half feature “Tiny”, and the other half will be “Puissant”.

Seeed Studio XIAO nRF52840 Sense is carryingBluetooth 5.0 wireless capability and is able to operate with low power consumption. Featuring onboard IMU and PDM, it can be your best tool for embedded Machine Learning projects.

Application

• Small and flexible wearable device
• Wifi/Bluetooth-controlled wireless connection project
• Embedded Machine Learning Project
• IoT and TinyML AI applications
• Great for mini Arduino projects

Features:

1. Versatile Microcontroller: Incorporate the Nordic nRF52840 chip with FPU, operating up to 64 MHz, mounted multiple development ports, supported by Arduino / CircuitPython
2. Wireless Capabilities: Implement Bluetooth 5.0, BLE functions with onboard antenna, also provide NFC connectivity
3. Elaborate Power Design: Provide ultra-low power consumption as 5 μA in deep sleep mode while supporting lithium battery charge management
4. Advanced onboard Functionality: Assemble additional digital microphone and 6-axis IMU in the tiny board for embedded Machine Learning applications
5. Thumb-sized Design: 21 x 17.5mm, Seeed Studio XIAO series classic form factor, suitable for wearable devices

Package Includes:

1 x Seeed Studio XIAO nRF52840 Sense TinyML/TensorFlow Lite IMU / Microphone – Bluetooth5.0

The Nordic Semiconductor nRF52840 Mini is a breakout and development board for the nRF52840, a powerful combination of ARM Cortex-M4 CPU and 2.4GHz Bluetooth radio from SparkFun. With the nRF52840 at the heart of your project, you’ll have access to an almost limitless number of project possibilities in a surprisingly small package.

Most of the critical I/O pins, including GPIO and those required for power, are separated on our mini development board for the nRF52840, which has a footprint that is nearly identical to the Arduino Pro Mini (except those covered by the Qwiic Connector). It has a USB interface (which takes advantage of the nRF52840’s native USB support) that can be used to program, power, and communicate with the chip, allowing it to be used for any purpose (UART, I2C, SPI) that the Arduino Pro Mini can. A Raytac MDBT50Q-P1M module is included in the Pro nRF52840 Mini. This module connects the nRF52840 to a trace antenna, fits the IC into an FCC-approved footprint, and includes many of the decoupling and timing mechanisms that a bare nRF52840 design would require. A LiPo battery charger, a Qwiic connector, an on/off switch, a reset switch, and a user LED/button are also included onboard.

Applications:

1. Smart home (such as door locks, lighting) sensors and controllers
2. Industrial IoT sensors and controllers
3. Health/fitness sensor and monitor device
4. Wearables with wireless secure payment

Features:

1. Low power requirements, ultra-low peak, average and idle mode power consumption.
2. Be compatible with a large installed base of mobile phones, tablets, and computers.
3. Fully coverage of BLE software stack.
4. BLE & RF transmission switching helps products fit all operation systems and most hardware.

Package Includes:

1 x SparkFun Pro nRF52840 Mini – Bluetooth Development Board

This is a TTGO T8 V1.7 ESP32 8MB PSRAM TF CARD 3D ANTENNA WiFi &amp, Bluetooth ESP32-WROVER-Unsoldered. The module is used in the radio frequency range. This module has a powerful enough onboard processing and storage capability that allows it to be integrated with other application-specific devices through minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, which is designed to occupy a minimal PCB area. It is also used in Bluetooth.

Features:

1. Lastest ESP32 Version: REV1
2. WIFI & Bluetooth
3. 4MB Flash & 8MB PSRAM
4. Lithium battery interface, 500mA Max charging current

Package Includes:

1 x Unsoldered TTGO T8 V1.7 ESP32 8MB PSRAM TF CARD 3D ANTENNA WiFi & Bluetooth ESP32-WROVER Micropython 16MB FLASH

Add Bluetooth Functionality to your SmartBMS with this module!  Plugs into the UART port of your BMS and connects to your Apple or Android Smartphone.

The BMS Bluetooth Module is used to detect the level of the battery and with Bluetooth, it can broadcast to other devices.we can monitor the level percentage of the battery.

Package Includes:

1 x BMS Bluetooth module