Here are the internal SoC HC-05 Bluetooth module schematics:įor a complete list of AT commands used for the HC-05 Module please refer to this link. USB protocol supportedįull speed USB v1.1 complainant with USB 2.0 Here are the key features of the Bluetooth module present in the HC-05 part. > Read also A Beginner’s Guide To ESP32 Programming HC-05 Key Features Drive this pin HIGH to put the module in command mode. Data received on Bluetooth will be transmitted out on this pin.ĮN → You use this pin to put the HC-05 module in AT command mode. The received data will be transmitted over Bluetooth wirelessly. You connect the ESP32 transmit pin to the RXD pin. STATE pin → The STATE pin on the HC-05 Module indicates whether the module is connected. You will find a lot of HC-05 modules on the market. Right away, here is the link to the datasheet of the HC-05 module.īy the end of this article, you will be confident in building and debugging HC-05 Bluetooth modules in the future. In this section, I will teach you everything about HC-05 modules. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to products on .īefore we see how to connect an HC-05 Bluetooth module to the ESP32, let’s take a look at the HC-05 Bluetooth module itself. How to Install ESP32 Core on Arduino IDE.Micro USB Cable for ESP32 (for powering ESP32 and programming) x 1.ESP32 Wroom 2.4 GHz with integrated Antenna x 1.How do I connect the HC-05 module to my ESP32?Ĭomponents Needed To Build ESP32 And HC-05 Bluetooth Module Project Hardware Components.Can the HC-05 module be used with a smartphone or tablet?.What are some applications of the HC-05 Bluetooth module?.How does the HC-05 module differ from the HC-06 module?.What is the default baud rate of the HC-05 module?.FAQs About The ESP32 And HC-05 Bluetooth Module.Step 2: Program the ESP32 with the code below.Step 1: Complete the hardware connections.Instructions To Connect The HC-05 Bluetooth Module to ESP32. Components Needed To Build ESP32 And HC-05 Bluetooth Module Project.Whether you’re a beginner or an experienced maker, this article will provide a solid foundation to explore the world of HC-05 Bluetooth modules, and using them with an ESP32. I will show you all the valuable features and tricks of the HC-05 modules.īy the end of this article, you will understand how the ESP32 and HC-05 work and have the skills and knowledge to begin experimenting and integrating into your projects. I will teach you how to connect the HC-05 to an ESP32 and share some example codes you can use. HC-05 helps you in these instances to get things rolling quickly. Or maybe you want to avoid getting into Bluetooth-Low-Energy (BLE) features and more of ESP32 for a while. However, there are use-cases, such as you are migrating from the Arduino board to the ESP32 board, but you want to keep the code the same (except for a few minor pin mappings). The latest ESP32 boards come with a built-in Bluetooth feature so you don’t need an HC-05 module in order to use bluetooth with an ESP32. Why do you need an HC-05 bluetooth module with an ESP32?
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