--- product_id: 48472913 title: "Model:HC-05" brand: "dsd tech" price: "₹ 40" currency: INR in_stock: true reviews_count: 12 url: https://www.desertcart.in/products/48472913-model-hc-05 store_origin: IN region: India --- # 3.6V-6V Power Bluetooth V2.0 AT Command Control Model:HC-05 **Brand:** dsd tech **Price:** ₹ 40 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your Projects with Seamless Bluetooth Connectivity! ## Quick Answers - **What is this?** Model:HC-05 by dsd tech - **How much does it cost?** ₹ 40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/48472913-model-hc-05) ## 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 - • **Dual Functionality:** Master & Slave Modes for Versatile Connectivity - • **User-Friendly Setup:** Easily switch modes with AT commands and a simple button press - • **Reliable Performance:** Utilizes CSR BC417 chip for stable wireless communication - • **Robust Compatibility:** Works seamlessly with Arduino for endless project possibilities - • **Effortless Configuration:** Default settings for quick start; customize as needed ## Overview The DSD TECH HC-05 Bluetooth Serial Pass-through Module is a versatile wireless communication tool designed for Arduino enthusiasts. It features dual master/slave functionality, operates within a voltage range of 3.6V to 6V, and utilizes the reliable CSR BC417 chip for stable connections. With user-friendly AT command setup, this module is perfect for both beginners and seasoned developers looking to enhance their projects. ## Description The Core module is HC-05 bluetooth 2.0 module. By using this Bluetooth module, you can quickly add Bluetooth features to your arduino 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 ipad If you need to use ipad to control your arduino project. You may need a Bluetooth 4.0 ble module (such as SH-HC-08 Bluetooth 4.0 ble module) Package List 1 X HC-05 Module with Plastic cover 1 X User guide About warranty DSD TECH offers one year warranty and lifetime technical support Review: Good delivery, working product great tech support - Hi, I bought two of these to allow me to communicate between 2 arduinos. I had googled a little and it seemed simple enough from the examples I had seen, but once I got the chips I discovered none of the examples I found on-line worked. That's where the support desk from DSD came in, these guys were great, I explained what I wanted to do and they helped me every step of the way, I'm not sure I would have gotten them working without the support desk's help. So if anyone wants to send data between two arduinos using these blue tooth chips here are the steps I followed Step 1 To wire up the blue tooth to the arduinos follow the instructions on the following site, I also found arduino libraries help which controlled the serial communication ( I could not get the normal Tx Rx pins to work) http://www.martyncurrey.com/arduino-to-arduino-by-bluetooth/ However the bluetooth commands listed on this site did not work for me, that is where DSD came to my rescue. Step 2 To enter the AT command mode (where you define setting on the chip) press the button on the right hand side of the chip just above the pin as you are powering the chip on, if the chip enters command mode the led will flash slowly. Step 3 Once in command mode select one chip to be the slave and one to be master AT+ROLE=0 (Slave mode) AT+ROLE=1 (Master mode) Step 4 Set names for both chips AT+NAME= name AT+NAME? should give you the name back but didn't work for me, so instead I confirmed the name using an android phone ( note devices in master mode will not show up in a scan) Step 5 Set password The default is 1234 and you could leave it at that if you really want but probably better to change it AT+PSWD=password AT+PSWD? will return the password Make sure to set the same password on both devices Step 6 find device address AT+ADDR? Record the value for both master and slave Step 7 on both devices do the following AT+CMODE=0 and on the master AT+BIND = slave address on the slave AT+BIND = master address Step 8 both cycle both devices do not press the button to put them in command mode They should now connect to each other the led will start to flash rapidly this is them in pairing mode and once they pair the led will do a double flash once every couple of seconds. On final thing I had to set the BTserial on the arduinos to 38400 not 9600. So that's it, the delivery time was good, the chips work and the helpdesk coudn't have been better, I would buy more stuff from DSD. Review: Good quality - This is the third purchase from DSD Tech and have all been reliable and good build quality. The very excellent product setup and description from Mel Cushnahan was very helpful. The only thing I would add is I spent hours trying to get 2 HC-05's to communicate together. I eventually found that some websites say connect the EN pin to 3.3v, which I had done. After reading the data sheet I found that this puts the HC-05 into AT mode and is only required if the module does not have a AT mode button, which the DSD Tech has, so leave the EN pin unconnected. Apart from that, if you follow Mel Cushnahan instructions, when you cycle the power both HC-0's blink rapid whilst pairing and then a double blink every few seconds once paired. ## Features - Bluetooth module HC-05 Master and slave Two in one module. Please note: iOS devices are not supported - Use the CSR BC417 mainstream bluetooth chip, bluetooth V2.0 SPP protocol standards - Module working voltage 3.6 V to 6V - Default rate of 9600,default pin:1234, the user can be set up.click the button into AT MODE - Can be switched via AT commands as master or slave mode , the device can be connected via AT commands specified ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01G9KSAF6 | | Brand Name | DSD TECH | | Color | Black, Green, Silver | | Customer Reviews | 4.4 4.4 out of 5 stars (838) | | Data Link Protocol | Bluetooth | | Data Transfer Rate | 1382400 Bits Per Second | | Hardware Interface | Bluetooth | | Item Weight | 0.02 Pounds | | Manufacturer | DSD TECH | | Manufacturer Part Number | sh-hc-05-us | | Model Number | HC-05 | ## Product Details - **Brand:** DSD TECH - **Colour:** Black, Green, Silver - **Data link protocol:** Bluetooth - **Data transfer rate:** 1382400 Bits Per Second - **Hardware interface:** Bluetooth - **Item weight:** 0.02 Pounds - **Manufacturer:** DSD TECH ## Images ![Model:HC-05 - Image 1](https://m.media-amazon.com/images/I/61CU5YmBsEL.jpg) ![Model:HC-05 - Image 2](https://m.media-amazon.com/images/I/51Z4ozRlSOL.jpg) ![Model:HC-05 - Image 3](https://m.media-amazon.com/images/I/61TQG6ds5mL.jpg) ![Model:HC-05 - Image 4](https://m.media-amazon.com/images/I/61FGTph+waL.jpg) ![Model:HC-05 - Image 5](https://m.media-amazon.com/images/I/61uDGNIXXBL.jpg) ## Questions & Answers **Q: Are there apps for controlling this on IOS?** A: ArduinoBlue app works fine. Pairing it to a phone is very straightforward. You need this module to talk to a microcontroller for it to be able to do anything useful though. **Q: Could i use this to control 2 stepper motors from a uno r3 board?** A: You can't control the motors directly with this but you can use the bluetooth module to communicate between the Uno and the stepper motor control shield for control purposes. **Q: does this work with an elegoo uno r3 ?** A: this hc-05 bt module work with arduino uno r3 , pro min ,nano . **Q: can this device scan for or create BLE beacons?** A: Yes but with very limited distance range. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good delivery, working product great tech support *by M***N on 9 February 2018* Hi, I bought two of these to allow me to communicate between 2 arduinos. I had googled a little and it seemed simple enough from the examples I had seen, but once I got the chips I discovered none of the examples I found on-line worked. That's where the support desk from DSD came in, these guys were great, I explained what I wanted to do and they helped me every step of the way, I'm not sure I would have gotten them working without the support desk's help. So if anyone wants to send data between two arduinos using these blue tooth chips here are the steps I followed Step 1 To wire up the blue tooth to the arduinos follow the instructions on the following site, I also found arduino libraries help which controlled the serial communication ( I could not get the normal Tx Rx pins to work) http://www.martyncurrey.com/arduino-to-arduino-by-bluetooth/ However the bluetooth commands listed on this site did not work for me, that is where DSD came to my rescue. Step 2 To enter the AT command mode (where you define setting on the chip) press the button on the right hand side of the chip just above the pin as you are powering the chip on, if the chip enters command mode the led will flash slowly. Step 3 Once in command mode select one chip to be the slave and one to be master AT+ROLE=0 (Slave mode) AT+ROLE=1 (Master mode) Step 4 Set names for both chips AT+NAME= name AT+NAME? should give you the name back but didn't work for me, so instead I confirmed the name using an android phone ( note devices in master mode will not show up in a scan) Step 5 Set password The default is 1234 and you could leave it at that if you really want but probably better to change it AT+PSWD=password AT+PSWD? will return the password Make sure to set the same password on both devices Step 6 find device address AT+ADDR? Record the value for both master and slave Step 7 on both devices do the following AT+CMODE=0 and on the master AT+BIND = slave address on the slave AT+BIND = master address Step 8 both cycle both devices do not press the button to put them in command mode They should now connect to each other the led will start to flash rapidly this is them in pairing mode and once they pair the led will do a double flash once every couple of seconds. On final thing I had to set the BTserial on the arduinos to 38400 not 9600. So that's it, the delivery time was good, the chips work and the helpdesk coudn't have been better, I would buy more stuff from DSD. ### ⭐⭐⭐⭐⭐ Good quality *by D***R on 10 March 2023* This is the third purchase from DSD Tech and have all been reliable and good build quality. The very excellent product setup and description from Mel Cushnahan was very helpful. The only thing I would add is I spent hours trying to get 2 HC-05's to communicate together. I eventually found that some websites say connect the EN pin to 3.3v, which I had done. After reading the data sheet I found that this puts the HC-05 into AT mode and is only required if the module does not have a AT mode button, which the DSD Tech has, so leave the EN pin unconnected. Apart from that, if you follow Mel Cushnahan instructions, when you cycle the power both HC-0's blink rapid whilst pairing and then a double blink every few seconds once paired. ### ⭐⭐⭐⭐ Nice board *by A***H on 1 September 2017* A nice little board, once it is working, It seems to have an impressive range. I tested mine in a factory environment using an Arduino sending & receiving from a Dell laptop. I got good transmission & reception at 20m at 9600 Baud. At about 25m it starts to stutter. Physically, it's about 50mm x 15mm. Connecting it up, you need the power pins & the Rx & Tx pins. The State pins seems to indicate that it has paired. I didn't give this 5 stars because of the lack of documentation. I had to rummage around on the internet to find out things like passcodes (1234). There is a lot of information on the internet for this board & clearly, it is quite a clever little widget. I'm about to buy a couple more boards for another little project so I think that says a lot about the board ## Frequently Bought Together - DSD TECH HC-05 Bluetooth Serial Pass-through Module Wireless Serial Communication with Button for Arduino - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects - HiLetgo 3pcs GY-521 MPU-6050 MPU6050 3 Axis Accelerometer Gyroscope Module 6 DOF 6-axis Accelerometer Gyroscope Sensor Module 16 Bit AD Converter Data Output IIC I2C for Arduino --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/48472913-model-hc-05](https://www.desertcart.in/products/48472913-model-hc-05) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-05-17*