--- product_id: 46402940 title: "DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version)" brand: "dsd tech" price: "€ 19.80" currency: EUR in_stock: true reviews_count: 13 category: "Dsd Tech" url: https://www.desertcart.at/products/46402940-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless store_origin: AT region: Austria --- # Bluetooth 2.0 classic wireless 3.6V-6V wide voltage range AT command mode for custom control DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version) **Brand:** dsd tech **Price:** € 19.80 **Availability:** βœ… In Stock ## Summary > πŸ“‘ Unlock wireless power: DIY projects just got smarter! ## Quick Answers - **What is this?** DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version) by dsd tech - **How much does it cost?** € 19.80 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/46402940-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless) ## Best For - dsd tech enthusiasts ## Why This Product - Trusted dsd tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Dual Mode Flexibility:** Switch effortlessly between Master and Slave modes to connect with various Bluetooth 2.0 devices. - β€’ **Plug & Play Connectivity:** Includes 6-pin Dupont cable for quick and secure wiringβ€”no hassle, just build. - β€’ **Customizable Communication:** Enter AT command mode via button press to tailor baud rates and settings to your needs. - β€’ **Reliable Support & Warranty:** Backed by 1-year replacement and responsive technical support within 24 hours. - β€’ **Seamless DIY Bluetooth Integration:** Add wireless control to your projects with ease using the HC-05 module. ## Overview The DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module is a versatile, easy-to-integrate Bluetooth solution designed for Arduino UNO R3 and Nano projects. Operating between 3.6V and 6V, it supports both Master and Slave modes, enabling flexible device connections. With a default baud rate of 9600 and an accessible AT command mode, users can customize communication settings effortlessly. The package includes a 6-pin Dupont cable for straightforward installation, and the product is backed by a 1-year warranty and dedicated technical support, making it a reliable choice for millennial makers seeking to add wireless control to their DIY gadgets. ## Description The Core module is HC-05 bluetooth 2.0 serial module. By using this HC 05 Bluetooth module , you can quickly add Bluetooth features to your wireless DIY Project. The factory setting is slave mode, but you can set this module to master mode so that you might be able to connect to other Bluetooth 2.0 devices. Please note: This is a classic Bluetooth 2.0 module , it is not compatible with iphone or ipad. If you need to use iphone or ipad to control your DIY project. You may need a Bluetooth 4.0 BLE module (such as SH-HC-08 Bluetooth 4.0 ble module) How to enter the AT command mode Way 1: Step 1: Input low level to PIN34->EN PIN. (it can also be floating) Step 2: Supply power to the module. Step 3: Input high level to the EN PIN(PIN34)(you can press the button this do this action,if you buy HC-05 from DSD TECH) Then the module will enter to AT mode. The baud rate is as same as the communication time, default is 9600 Way 2: Step 1: Connect PIN34(EN PIN) to the power supply PIN.or always press the button . Step 2: Supply power to module Then the module will enter to AT module. But at this time, the baudrate is always 38400. In this way, user should change the baud rate at the AT mode, if they forget the communication baud rate. Package List: 1* HC-05 Module with 6PIN 1* 6PIN Dupont Cable About WARRANTY:DSD TECH back this module with ONE YEAR WARRANTY. If you meet any question, please contact us, we will fix your issue within 24 hours. Review: Programming the HC05 is challenging but it works great. - I am using this module to interface with a MMDVM UHF Hat to use with BlueDV for Android connected wirelessly via Bluetooth. It works great. I am assembling 2 devices to use in our cars. I used TerraTerm to program these. Programming this device was an educational experience. Sometimes the "AT" command has to be in caps, sometimes in lower case. In programming mode the HC05 is running with a 38400 baudrate. For use with BlueDV you must set the HC05 AT+UART=115200, 0, 0. You must also set the device's name exactly to "BlueStack" if using the BlueDV in "DVMEGA" mode. I don't know the settings for BlueDV using the "MMDVM_HS" or "Zumspot" modes. Before programming your HC05 you must not exceed a signal above 3.3 v on the RTD input. I used the DSD SH-U09C to program with. Setting the SH-U09C for 3.3 v also sets the VCC from the SH-U09C to 3.3 v. My work around was plugging the CP2102 in and using 5 v from that to power the HC05 while connected to the SH-U09C for programming and that worked great. The HC05 has to have 5 v for VCC with the RTD input 3.3 v for proper operation. Once your programming is done you're in business. I used the CP2102 as the power supply for the HC05 and my MMDVM Uhf hat, it provides enough power to run this system. You can also use the CP2102 as a serial input into your MMDVM but you can only the HC05 or the CP2102 to the MMDVM hat, if you connect both the HC05 and the CP2102 it won't work - you can install a DPDT switch to change the input of the MMDVM hat from CP2102 to HC05 as you like. If you build that you've built your own BlueStack. Good luck. BlueDV for Android runs on Android phones and tablets. Review: Excellent - Excellent ## Features - HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your DIY project, and then you can use your android phone to control some gadgets, such as: switch, LED. - Master and Slave 2-IN-1 HC 05 Module:Working Voltage 3.6V to 6V , Default baud rate:9600,Default pin:1234 - Button: Press the button, the module enter the AT mode. AT commands are executed only in AT mode. - 6 PIN Dupont Cable : with this Dupont Cable, you can easily connect this HC-05 Bluetooth module. - Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this Bluetooth 2.0 Serial Wireless Module.All questions will be answered within 1 working day. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B074GMQ6G3 | | Best Sellers Rank | #65 in Bluetooth Network Adapters | | Customer Reviews | 4.3 4.3 out of 5 stars (268) | | Date First Available | August 1, 2017 | | Is Discontinued By Manufacturer | No | | Item Weight | 0.2 ounces | | Item model number | HC-05 | | Manufacturer | DSD TECH | | Product Dimensions | 2 x 1.5 x 0.1 inches | ## Images ![DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version) - Image 1](https://m.media-amazon.com/images/I/61m3XCVOq+L.jpg) ## Questions & Answers **Q: Where can i get an at command list for an hc05 module?** A: You can download product content from http://www.dsdtech-global.com/ **Q: What is the difference between this unit and the one you have for $9.49 without the jumper cables?** A: One contains a DuPont cable and the other does not. **Q: Can i connect this to sensor trackers to send midi via bluetooth smart to an ios device?** A: hc-05 is a bluetooth 2.0 module. it don't support any iOS device. maybe you can try "DSD TECH HM-10 bluetooth module" it is bluetooth 4.0 ble module ,it support bluetooth smart and iOS . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Programming the HC05 is challenging but it works great. *by A***C on March 6, 2026* I am using this module to interface with a MMDVM UHF Hat to use with BlueDV for Android connected wirelessly via Bluetooth. It works great. I am assembling 2 devices to use in our cars. I used TerraTerm to program these. Programming this device was an educational experience. Sometimes the "AT" command has to be in caps, sometimes in lower case. In programming mode the HC05 is running with a 38400 baudrate. For use with BlueDV you must set the HC05 AT+UART=115200, 0, 0. You must also set the device's name exactly to "BlueStack" if using the BlueDV in "DVMEGA" mode. I don't know the settings for BlueDV using the "MMDVM_HS" or "Zumspot" modes. Before programming your HC05 you must not exceed a signal above 3.3 v on the RTD input. I used the DSD SH-U09C to program with. Setting the SH-U09C for 3.3 v also sets the VCC from the SH-U09C to 3.3 v. My work around was plugging the CP2102 in and using 5 v from that to power the HC05 while connected to the SH-U09C for programming and that worked great. The HC05 has to have 5 v for VCC with the RTD input 3.3 v for proper operation. Once your programming is done you're in business. I used the CP2102 as the power supply for the HC05 and my MMDVM Uhf hat, it provides enough power to run this system. You can also use the CP2102 as a serial input into your MMDVM but you can only the HC05 or the CP2102 to the MMDVM hat, if you connect both the HC05 and the CP2102 it won't work - you can install a DPDT switch to change the input of the MMDVM hat from CP2102 to HC05 as you like. If you build that you've built your own BlueStack. Good luck. BlueDV for Android runs on Android phones and tablets. ### ⭐⭐⭐⭐⭐ Excellent *by J***R on April 19, 2026* Excellent ### ⭐⭐⭐⭐ Works but may be hard to configure. *by J***N on November 4, 2018* Kind of a pain to program and change settings on an arduino. Ended up using an hc06 instead since it was simpler for me. If you don't want to change baud rates, PINs, or names, this should do fine for you. ## Frequently Bought Together - DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA (Basic Version) - Elegoo 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Wires Ribbon Cables Kit for arduino - ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/46402940-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless](https://www.desertcart.at/products/46402940-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-05-09*