The TTGO T-Beam offers 26-pin headers with GPIO, ADC, VP/VN, DAC, touch, SPI, I2C, UART, 2דLoRa” pin, and power signals (5V/3.3V/GND). There are also two buttons on the board—one is for power, but the second is connected to the GPIO39 pin of the ESP32.

Pin Description:

The board is built around a dual-core ESP32 chip, with 4MB of SPI flash onboard, providing both Wi-Fi and Bluetooth LE via a “3D antenna” on the PCB.

The board’s LoRa support comes in three different variants, operating at 433MHz, 868MHz, and 915MHz depending on region, with an included SMA antenna. While location tracking is provided by the onboard u-Blox NEO-6M GPS module with a ceramic antenna.

The board can be programmed using the Arduino development environment, and the example code shows you how to both send and receive data via LoRa.

Flipping the board over there is a battery holder for a 18650 Li-Ion cell, and while a 18650 sort of looks like a “standard” AA battery, it’s significantly different. So don’t make the mistake of substituting in the more common AA battery to try and power the board. They’re not quite the same size, but I’ve seen people attempt this substitution nonetheless.

Features:

1. Highly configurable data packet processing program, the configuration parameter data can be saved in EEPROM.
2. ERP32 with the new version REV1 supports wireless Internet access and wireless Bluetooth connection.
3. Designated module with ceramic antenna and super signal, supports automatic gain control and automatic frequency correction.
4. GPS With the help of a global positioning system, GPS module NEO-6M, 3V-5V universal power supply.
5. It also has a digital RSSI function, RF wake-up function,
6. 4MB flash memory,
7. Low voltage detection, and temperature sensor,
8. Fast wake-up and frequency hopping LED signal indicator, and battery with data backup.

Package Includes:

1 x TTGO T-Beam V1.1 ESP32 LORA 433MHz WiFi Wireless Bluetooth Module

1  x Antenna

1 x Berg Pins

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

BLE-Nano-Board has a main chip ATMEGA328P-MU QFN32, the latest bootloader (Arduino IDE 1.8.8) was burned down. It is fully compatible with the common nano board. BLE-Nano-Board is PIN-PIN with Arduino Nano V3.0, and share the same
Super small volume design, more convenient to use this PCB size is only 48mm*19mm, the pin is fully compatible with Nano V3.0, No Soldering is needed. The micro USB port is more convenient to use
High-quality material and Technology is being used the Bluetooth is used TI CC2540 BLE (SOC) chip. Maximum support 1Mbps air data transfer rate, stable performance. Communication distance can reach 50M in an open environment.
More convenient for application of BLE-Nano-Board integrates a CC2540 BLE module with Arduino nano v3.0 board, which is very convenient for Bluetooth wireless connect applications.

Pinout Diagram:

Features:

1. Fully compatible for Arduino Nano-V3.0 pins and usage
2. Transmission distance: open distance 50m
3. Support Bluetooth host mode to automatically connect slaves
4. Support AT command to configure BLE
5. Support USB virtual serial port, hardware serial port, BLE three-way transparent transmission
6. Support master-slave switching

Package Includes:

1 x BLE Nano Integrated CC2540

This is a TTGO TSIM7000G Module ESP32- WROVER-B Chip WiFi Bluetooth 18560 Battery Holder Solar Charge Development Board. The module is used to transfer any data to another. The 7000G also has onboard GPS and a rechargeable battery. You fairly easily build a GPS tracker for your bike or other movable property. It has a solar input to charge the battery but any voltage source between 4-8V can be used to keep the battery charged.

Features:

1. ESP32-WROVER-B Main Chip
2. SIM7000G Module
3. 18560 Battery Holder
4. 4M Flash and 8M PSRAM
5. Solar Charge Development Board

​Data download link：
https://github.com/Xinyuan-LilyGo/esp32-face-recognition

Package Include:

1 x TTGO TSIM7000G Module ESP32- WROVER-B Chip WiFi Bluetooth 18560 Battery Holder Solar Charge Development Board Unsoldered

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: