소개
The DSD TECH HM-19 is a Bluetooth 5.0 BLE module designed for integration into various DIY projects and products. It features the Texas Instruments CC2640R2F chip, offering enhanced data transfer rates and a larger Maximum Transmission Unit (MTU) compared to previous Bluetooth 4.0 modules. This manual provides essential information for setting up, operating, and troubleshooting your HM-19 module.
제품 끝view
The HM-19 module is an advanced Bluetooth Low Energy (BLE) solution.
주요 특징
- Bluetooth 5.0 BLE protocol
- Main IC: Texas Instruments CC2640R2F
- Faster transfer rate and larger MTU
- Compatible with HM-11 and HM-10 AT commands
- 6-pin base board for easy integration (VCC, GND, TX, RX, STATE, EN)
명세서
| 특징 | 세부 사항 |
|---|---|
| 모델 | HM-19 |
| 블루투스 프로토콜 | 5.0 BLE |
| 메인 IC | TI CC2640R2F |
| 작업 볼륨tag전자(VCC) | 3.6V ~ 6V |
| TTL Logic Level (TX, RX) | 3.3V |
| 치수 | 1.4 x 0.6 x 0.1 인치 |
| 품목 무게 | 0.2 온스 |
설정
핀아웃 설명
The HM-19 module features a 6-pin base board for easy connection.
- EN (활성화): Used to enable or disable the module.
- VCC (Voltage Common Collector): Power supply input. Connect to a 3.6V to 6V DC source.
- GND(접지): Ground connection for the module.
- TXD(전송 데이터): Transmits serial data from the module. Connect to the RX pin of your microcontroller.
- RXD(수신 데이터): Receives serial data for the module. Connect to the TX pin of your microcontroller.
- 상태: Indicates the connection status of the Bluetooth module.
초기 연결
- Connect the VCC pin of the HM-19 module to a 3.6V-6V power supply.
- Connect the GND pin of the HM-19 module to the ground of your power supply and microcontroller.
- Connect the TXD pin of the HM-19 to the RX pin of your microcontroller (e.g., Arduino).
- Connect the RXD pin of the HM-19 to the TX pin of your microcontroller. Ensure your microcontroller's TX/RX pins operate at 3.3V logic levels. If not, a logic level converter may be required.
- The STATE pin can be connected to an LED or a digital input on your microcontroller to monitor the Bluetooth connection status.
운영
AT 명령
The HM-19 module is configured using AT commands, which are compatible with HM-11 and HM-10 modules. These commands are sent via a serial interface (TX/RX pins).
To enter AT command mode, typically the module needs to be powered on, and commands sent via a serial terminal. Refer to the specific AT command set documentation for detailed commands and their functions.
DSD TECH Bluetooth App
DSD TECH provides a free application to facilitate quick integration and testing of the module with Android and iOS devices.
- 안드로이드의 경우: 검색 "DSD TECH Bluetooth" in the Google Play Store.
- iOS의 경우: 검색 "DSD TECH Bluetooth" in the Apple App Store.
You can also scan the QR code below to install the DSD TECH Bluetooth App for iOS devices:
Direct link for iOS App: DSD TECH Bluetooth App (iOS)
유지
The DSD TECH HM-19 module is designed for durability and requires minimal maintenance.
- 모듈을 깨끗하고 먼지와 습기가 없는 상태로 유지하세요.
- 모듈을 극한 온도나 직사광선에 노출시키지 마세요.
- Ensure proper ventilation if enclosed in a casing.
- Handle with care to prevent damage to pins or components.
문제 해결
If you encounter issues with your DSD TECH HM-19 module, consider the following troubleshooting steps:
- 전원 없음: Ensure VCC and GND connections are correct and within the specified voltage 범위(3.6V ~ 6V).
- 블루투스 연결 없음:
- Verify the module is powered on (check STATE pin if connected to an LED).
- Ensure your host device's Bluetooth is enabled and scanning.
- Check the distance between the module and the host device.
- Restart both the module and the host device.
- Communication Errors (AT Commands/Data):
- Confirm TXD and RXD connections are correctly cross-wired (TX to RX, RX to TX).
- Verify the serial baud rate settings on your microcontroller or serial terminal match the module's default or configured baud rate.
- Ensure logic levels are compatible (3.3V for TX/RX). Use a logic level converter if necessary.
- 다른 무선 장치로 인한 간섭이 있는지 확인하세요.
- 모듈이 응답하지 않습니다: Power cycle the module. If issues persist, contact DSD TECH customer support.
보증 및 지원
DSD TECH provides a 1년 보증 for the HM-19 Bluetooth 5.0 BLE module.
For technical assistance or warranty claims, please contact DSD TECH customer support. All inquiries will be addressed within 24 hours.
DSD TECH also offers permanent technical support for its products.
