PB-03 can meet the power consumption requirements of most application scenarios, as the RF output power is adjustable, and other features can be fine-tuned. As such, the Bluetooth LE 5.2 module provides an optimal balance between the communication range, data rate, and power consumption

PB-03 is a BLE module developed by Shenzhen Ai-Thinker Technology Co, Ltd.

Features:  

1. PB-03 module provide rich peripheral interfaces including UART, PWM, ADC, I2C, SPI, PDM, DMA and up to 19 IOs.
   
2. PB-03 module has many unique hardware security mechanisms Hardware encryption accelerator supports AES algorithm.
   
3. PB-03 module supports BLE with low power consumption: BLE 5.2 and BLE mesh Bluetooth rate
   
4. support: 125Kbps, 500Kbps, 1Mbps, 2Mbps. Support broadcast expansion multi-broadcast channel selection.
5. Application: Smart light control, mesh networking

Packages includes:

1 x  Ai-Thinker PB-03 BLE 5.2 Module

HM-BT4502 / HM-BT4502A is a wireless data pass-through module based on CMT4502 Bluetooth Low Energy 5.0 chip. By connecting with MCU, it can quickly realize the connection and data communication between the module and Bluetooth devices such as smartphones and tablets. MCU takes up less resource and development is simple.

Features:

1. Easy to use without any experience in Bluetooth stack application.
2. User interface uses universal serial port design, full-duplex two-way communication, minimum baud rate support 9600 bps.
3. Default connection interval is 30 millisecond, fast connection.
4. Support 2M symbol transmission.
5. Support 244 bytes packet transmission.
6. Support AT instruction for software reset and get MAC address.
7. Support AT instruction to set Bluetooth connection interval and control
   different forwarding rates (dynamic power adjustment).

Specifications:

1. Working voltage: 1.8V-3.6V.
2. Working temperature: – 20℃~+85℃.
3. Modulation mode: GFSK (Gaussian Frequency Shift Keying).
4. Modulation frequency: 2402MHz-2480MHz.
5. Transient current of receiving data: less than 8mA@3V.
6. Transient current of sending data: less than 8mA@3V@0dBm.
7. Current in the low power mode: less than 4uA@3V.
8. Tx power: – 20dBm ~+8dBm.
9. Rx sensitivity: -97dBm.

Packages Includes:

1 x Bluetooth module HM-BT4502.

In life, remote controllers can be seen everywhere, and most of them are inseparable from the battery. However, we often encounter problems when using the battery, for instance, it is troublesome to replace the battery, batteries are easy to corrode in a humid environment, or the waste batteries may cause serious environmental pollution. Do you know that wireless remote control can actually work without batteries!

This self-powered wireless switch from DFRobot can send signals wirelessly without installing a battery. The switch is composed of a micro-generator and a 433Mhz radio frequency circuit. Based on the principle of electromagnetic induction, the micro generator converts the kinetic energy of the press into electrical energy that will be rectified and stored by the RF circuit later, by which a signal can be transmitted wirelessly. It is suitable as a maintenance-free switch for long-term monitoring of changes in the state of pressing, collision, etc., such as making wireless doorbells, pagers, food ordering devices, wall switches, etc.

A receiver is required when using this product. It is recommended to use it with our official Gravity: Digital Wireless Switch Receiver (433MHz), or other receivers that support EV1527 decoding format and 10Kbps decoding rate.

Connection Diagram:

Applications:

• Wireless doorbells
• Pagers
• Food ordering devices
• Wall switches

Features:

1. No battery needed, maintenance-free
2. Wireless signal, wiring-free
3. RF signal, strong penetration
4. Onboard 4-position DIP switch, adjustable 15 states
5. 1 million sets of random address codes
6. The lifetime of 100,000 presses

Specifications:

1. Working Frequency: 433Mhz
2. Transmission Rate: 10kbps
3. Encoding Format: EV1527
4. Output Power: 13dBm
5. Modulation Method: OOK
6. Power Generation Energy: 600uJ
7. Module Size: 47x25x11mm(L*W*H)/1.85×0.98×0.43”
8. Press Down Force: Typical 1800g
9. Action Method: Automatically rebound after pressing down
10. Action Distance: 2.6mm (endpoint)
11. Press Frequency: no more than 4 times per second, continuously rapid press will cause energy accumulation that cannot be consumed in time, and eventually burn the chip
12. Stable Transmission Distance: Indoor 40M
13. Distance Test Condition: Straighten the wire antenna of the transmitting module, and for the receiving module, use [Gravity: Digital wireless switch receiver(433MHz)]

Useful Links:

• Product wiki
• Schematic
• PCB Dimensions
• Module Dimensions

Package Includes:

1 x DFRobot Self-powered Wireless Switch (433Mhz)

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 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

Features:

1. Supply voltage: 3.2 – 6V DC
2. Signal voltage: 3.2 – 6V DC
3. Range: ~10m (in open air)
4. LED indication present (indicates status of Bluetooth connection)
5. Interface: UART (RX and TX)
6. Baud rate in standard modes: 9600 (adjustable)
7. Default Bluetooth pin/password: 1234
8. Built-in antenna
9. Bluetooth version: 2.0/4.0 BLE

Package Includes:

1 x HC-02 Wireless Bluetooth Module without Baseplate Compatible with HC-05 / HC- 06

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:

Compared to previous BLE 4.2, BLE 5.0 significantly increases the range, speed, and broadcast messaging capacity of Bluetooth applications, bringing more peace of mind to users.

Specifications:

1. Input Voltage：4.5V-5.5V
2. Input Current: ≤20mA
3. Working Power: 110mW Max
4. Bluetooth Version: 5.0
5. Range: 15M
6. Interface: Micro USB
7. Bluetooth Status:
8. LED flashes blue: ready for connection
9. LED remains solid blue: connected
10. Working Temp: -10 to 55℃ / 14 to 131℉
11. Storage Temp: -20 to 70℃ / -4 to 158℉

Packages Includes:

1 x SKYRC Bluetooth Dongle