{"id":36998,"date":"2020-09-30T20:20:50","date_gmt":"2020-09-30T12:20:50","guid":{"rendered":"\/blog\/?p=36998"},"modified":"2020-10-22T14:37:29","modified_gmt":"2020-10-22T06:37:29","slug":"bluetooth-protocol-overview-and-bluetooth-module","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2020\/09\/30\/bluetooth-protocol-overview-and-bluetooth-module\/","title":{"rendered":"Bluetooth Protocol: Overview and Bluetooth Module"},"content":{"rendered":"\n<p>Bluetooth\u00ae technology is fairly common these days. From pairing wireless headphones to transferring documents, it is certainly a useful feature. But do you know how Bluetooth\u00ae actually started?<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2020\/09\/certificate-of-1030x579.png\" alt=\"Bluetooth Protocol: Overview and Bluetooth Module\" class=\"wp-image-37012\" width=\"511\" height=\"287\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2020\/09\/certificate-of-1030x579.png 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2020\/09\/certificate-of-300x169.png 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2020\/09\/certificate-of-768x432.png 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2020\/09\/certificate-of-1536x864.png 1536w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2020\/09\/certificate-of-2048x1152.png 2048w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2020\/09\/certificate-of-1024x576.png 1024w\" sizes=\"(max-width: 511px) 100vw, 511px\" \/><\/figure><\/div>\n\n\n\n<p>Bluetooth\u00ae was developed by Dr Jaap Haartsen and Sven Mattison at Ericsson back in 1994. Then in 1998, the Bluetooth\u00ae Special Interest Group (SIG) was formed and they oversee the development of Bluetooth\u00ae Standard. The initial founding members only consist of Ericsson, IBM, Toshiba, Intel and Nokia. Since then, SIG has grown and they have more than 40,000 members as of now.<\/p>\n\n\n\n<p>Fun fact: The name Bluetooth\u00ae was originated from the 10th Century Danish king, Herald Blatant!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Now that we have some understanding of Bluetooth\u00ae&#8217;s background, let&#8217;s look at what will be covered:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Overview of Bluetooth\u00ae Protocol<\/li><li>Bluetooth\u00ae Protocol Stacks<\/li><li>Applications of Bluetooth\u00ae Protocol<\/li><li>Product Recommendations <\/li><li>Projects with Bluetooth\u00ae Module<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Overview of Bluetooth\u00ae Protocol<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">What is Bluetooth\u00ae?<\/h3>\n\n\n\n<p>Bluetooth\u00ae allows wireless short-range communication between electronic devices, which operates at a speed of 2.45Ghz. It is low-cost and even if the Bluetooth is cut off, a cord can be used in replacement of it. <\/p>\n\n\n\n<p>As long as the 2 Bluetooth\u00ae devices are in 50 metres range, it is possible to connect. For Bluetooth\u00ae in mobile, though the range is about 10 to 100 metres, it is always possible to increase the range.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.bluetooth.com\/wp-content\/uploads\/2019\/04\/Bluetooth_FM_Color.png\" alt=\"\" width=\"224\" height=\"224\"\/><figcaption>Ref: <a href=\"https:\/\/www.bluetooth.com\/wp-content\/uploads\/2019\/04\/Bluetooth_FM_Color.png\">Bluetooth<\/a>\u00ae<\/figcaption><\/figure><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">How do Bluetooth\u00ae works?<\/h3>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>To understand how Bluetooth\u00ae works, we need to understand the Bluetooth network or more commonly known as <strong>Piconets<\/strong>, and this system allows devices to exchange data. <\/p>\n\n\n\n<p>Piconets use a <strong>point-to-point<\/strong> and <strong>point-to-link<\/strong> system. You can look at it as serial communication, where Piconet uses a Master-Slave relation.<\/p>\n\n\n\n<p>For point-to-point, as you can see in the diagram, a master is connected to a slave device. <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.elprocus.com\/wp-content\/uploads\/2016\/05\/Point-to-Point-Link-400x250.png\" alt=\"\" width=\"270\" height=\"169\"\/><figcaption>Ref: <a href=\"https:\/\/www.elprocus.com\/wp-content\/uploads\/2016\/05\/Point-to-Point-Link-400x250.png\">elprocus<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<p>For point-to-link, it functions more like a network. As you can see in the diagram, the master device is able to connect to multiple slave devices. However, slave devices are only able to connect to one master device each time. The maximum number of slave devices a master device can connect is seven.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.elprocus.com\/wp-content\/uploads\/2016\/05\/Point-to-Multiple-Links-400x250.png\" alt=\"\" width=\"382\" height=\"239\"\/><figcaption>Ref: <a href=\"https:\/\/www.elprocus.com\/wp-content\/uploads\/2016\/05\/Point-to-Multiple-Links-400x250.png\">elprocus<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Bluetooth\u00ae Versions<\/h3>\n\n\n\n<p>Bluetooth\u00ae has come a long way and the SIG has consistently been trying to explore the possibilities of Bluetooth. <\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"\"><tbody><tr><td><strong>Bluetooth<\/strong>\u00ae<strong> Versions<\/strong> <\/td><td><strong>Features and Specifications<\/strong><\/td><\/tr><tr><td>Bluetooth\u00ae v1.0 to v1.08<\/td><td> Mandatory Bluetooth\u00ae hardware device and address <\/td><\/tr><tr><td>Bluetooth\u00ae v1.1<\/td><td> IEEE standard 802.15.1-2002 <\/td><\/tr><tr><td>Bluetooth\u00ae v1.2 <\/td><td>Faster connection <\/td><\/tr><tr><td>Bluetooth\u00ae v2.0+EDR <\/td><td>Enhanced data rate<\/td><\/tr><tr><td> Bluetooth\u00ae v2.1 <\/td><td>Secure simple pairing<\/td><\/tr><tr><td> Bluetooth\u00ae v3.0 <\/td><td>High-speed data transfer <\/td><\/tr><tr><td>Bluetooth\u00ae v4.0 <\/td><td>Low energy consumption; recently in use in apple i- phone 4s<\/td><\/tr><tr><td>Bluetooth\u00ae v4.1<\/td><td>Incremental software update <\/td><\/tr><tr><td>Bluetooth\u00ae v4.2<\/td><td>New feature for Internet of Things (IoT)<\/td><\/tr><tr><td>Bluetooth\u00ae v5<\/td><td>Increased speed for Bluetooth\u00ae Low Energy (BLE)<\/td><\/tr><tr><td>Bluetooth\u00ae v5.1<\/td><td>New feature in Core Specification Addendum (CSA) 6<\/td><\/tr><tr><td>Bluetooth\u00ae v5.2<\/td><td>New features for LE<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Characteristics<\/h3>\n\n\n\n<p>Bluetooth\u00ae protocol characteristics:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Signals can be transmitted through walls and briefcases.<\/li><li>The maximum devices that can be connected in the piconet are up to eight.<\/li><li>There&#8217;s no need to aim your device since it&#8217;s omnidirectional.<\/li><li>Bluetooth\u00ae requires the government to regulate as it is possible to use the same standard.<\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Advantages<\/h3>\n\n\n\n<p>Advantages of Bluetooth\u00ae protocol:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Global technology specifications are used.<\/li><li>Bluetooth\u00ae offers economic wireless solutions (both data &amp; voice) for short distances.<\/li><li>There is no need to install Bluetooth\u00ae since it&#8217;s inbuilt.<\/li><li>Bluetooth\u00ae is used in the mobile and stationary environment.<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Bluetooth\u00ae Protocol Stacks<\/h2>\n\n\n\n<p>Protocol stacks are the main function of Bluetooth\u00ae, it allows Bluetooth\u00ae to run over and functions overtop other applications. These are some protocols:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Core Protocols<\/strong>: It includes Bluetooth\u00ae radio, Baseband, Link Manager Protocol (LMP), Logical Link Control and Adaptation Protocol (L2CAP), and Service Discovery Protocol (SDP). (Standard)<\/li><li><strong>Adopted Protocols<\/strong>: It includes Point-to-Point Protocol (PPP), Internet Protocol (IP), User Datagram Protocol (UDP), Transmission Control Protocol (TCP), and Wireless Application Protocol (WAP). (Adopted from the standard model)<\/li><li><strong>Cable Replacement Protocol<\/strong>: It includes Radio Frequency Communications (RFComm) protocol. It is short for Radio Frontend Component. ( provides a serial interface with WAP as well)<\/li><li><strong>AT Commands<\/strong><\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Here is a complete diagram of the protocols:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i.imgur.com\/s6x79Z8.png\" alt=\"\" width=\"544\" height=\"356\"\/><figcaption>Ref: <a href=\"https:\/\/i.imgur.com\/s6x79Z8.png\">Ques10<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Let&#8217;s look at some functions of the <strong>Core Protocol<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Radio<\/strong>: The physical layer equivalent protocol that lays down the physical structure and specifications for transmission of radio waves.<\/li><li><strong>Link Manager Protocol<\/strong> (LMP): Establishes logical links between Bluetooth\u00ae devices and maintains the links for enabling communications.<\/li><li><strong>Service Discovery Protocol <\/strong>(SDP): In charge of service-related queries like device information so as to establish a connection between contending Bluetooth\u00ae devices.<\/li><li><strong>Baseband<\/strong>: Takes the services of radio protocol.<\/li><li><strong>Logical Link Control and Adaptation Protocol<\/strong> (L2CAP): Provides adaption between upper layer frame and baseband layer frame format.<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Applications of Bluetooth\u00ae Protocol<\/h2>\n\n\n\n<p>These are some real-life applications of Bluetooth\u00ae Protocol:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Cars that are introduced back in 2004, such as Toyota Prius and Lexus. 430 band free call systems were installed.<\/li><li>Wireless communication with PC\u2019s input and output devices; the most common devices include a mouse, keyboard, and printer.<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Product Recommendations<\/h2>\n\n\n\n<p>At Seeed, we carry many Nordic BLE products. But today I will be recommending 2 of which BLE modules, hope you&#8217;ll be able to find the one that could satisfy your needs!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.seeedstudio.com\/MDBT42Q-nRF52832-based-BLE-module.html\">MDBT42Q &#8211; nRF52832 based BLE module<\/a> ($9.90)<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/static-cdn.seeedstudio.com\/media\/catalog\/product\/cache\/9d0ce51a71ce6a79dfa2a98d65a0f0bd\/h\/t\/httpsstatics3.seeedstudio.comseeedimg2016-11txsxl4eeqdrnhrm9pk21et1w.jpg\" alt=\"\" width=\"409\" height=\"276\"\/><\/figure><\/div>\n\n\n\n<p>MDBT42Q is a tiny BLE module: BT 4.0, BT 4.1 and BT 4.2 and it&#8217;s designed based on the Nordic nRF52832 SoC solution. Can you imagine it&#8217;s the size of a coin?<\/p>\n\n\n\n<p>Key features:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Dual Transmission mode of BLE &amp; 2.4 GHz RF upon customer preference.<\/li><li>Long working distance: over 80 meters in open space.<\/li><li>Compact size with (L) 16 x (W) 10 x (H) 2.2 mm. (Yes, the size of a coin!)<\/li><li>Low power requirements, ultra-low peak, average and idle mode power consumption.<\/li><li>Compatible with a large installed base of mobile phones, tablets and computers.<\/li><li>Fully coverage of BLE software stack.<\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Some application examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>IoT: Home automation, Sensor networks<\/li><li>Computer peripherals and I\/O devices: Mouse, Keyboard<\/li><li>Interactive entertainment devices:  Gaming controller,  Remote control<\/li><\/ul>\n\n\n\n<p>Interested to purchase? Get it <a href=\"https:\/\/www.seeedstudio.com\/MDBT42Q-nRF52832-based-BLE-module.html\">here<\/a>!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.seeedstudio.com\/MDBT50Q-P1M-nRF52840-Based-BLE-Module-p-3148.html\">MDBT50Q-P1M nRF52840 Based BLE Module<\/a> ($9.59)<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/static-cdn.seeedstudio.com\/media\/catalog\/product\/cache\/9d0ce51a71ce6a79dfa2a98d65a0f0bd\/h\/t\/httpsstatics3.seeedstudio.comseeedfile2018-09bazaar930783_mdbt50qp1400.jpg\" alt=\"\" width=\"368\" height=\"276\"\/><\/figure><\/div>\n\n\n\n<p>MDBT50Q-P1 is a BT 5.0 Stack BLE module that is designed based on Nordic nRF52840 SoC solution. This particular one has an integrated PCB as an antenna!<\/p>\n\n\n\n<p>Key Features:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Supports Bluetooth 5, IEEE 802.15.4 &amp; 2.4Ghz RF &amp; ANT upon customer&#8217;s preference.<\/li><li>Highly flexible multiprotocol SoC ideally suited for Bluetooth\u00ae Low Energy and 2.4GHz ultra-low-power wireless applications.<\/li><li>Compact size with 10.5 x 15.5 x 2.2 mm.<\/li><li>Complete BT5 &amp; BT4.2 low energy solution with integrated chip antenna.<\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Some application examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>IoT Networks: Smart home (such as door locks, lighting) sensors and controllers, Industrial IoT sensors and controllers.<\/li><li>Advanced wearables: Connected watches, Virtual\/Augmented Reality applications.<\/li><li>Personal Area Networks: Medical device, Health\/fitness sensor and monitor device<\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>If this is what you like, do check out its other series! <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.seeedstudio.com\/MDBT50Q-1M-nRF52840-Based-BLE-Module-p-3147.html\">MDBT50Q-1M nRF52840 Based BLE Module<\/a><\/li><li><a href=\"https:\/\/www.seeedstudio.com\/MDBT50Q-U1M-nRF52840-Based-BLE-Module-p-3149.html\">MDBT50Q-U1M nRF52840 Based BLE Module<\/a><\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.seeedstudio.com\/Wio-Terminal-p-4509.html\">Wio Terminal <\/a>BLE Connectivity<\/h3>\n\n\n\n<p>Before you can play with your BLE modules, It is important to note how to update your Bluetooth\u00ae, or else you won&#8217;t be able to access the functionality! Apart from that, you should also own a <a href=\"https:\/\/www.seeedstudio.com\/Wio-Terminal-p-4509.html\">Seeed Wio Terminal <\/a>because you would need this hardware in order to do so.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>You can skip ahead to the next step if you&#8217;ve already owned a Wio Terminal have prior knowledge to setup. Once you obtain your Wio Terminal, these are some concepts you should understand before you&#8217;re able to proceed:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Client and Server: Communication relations, They can both as master or slave.<\/li><li>UUID: used for identifying information that needs to be unique within a system or network thereof.<\/li><\/ul>\n\n\n\n<p>Then, you should download the&nbsp;<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=no.nordicsemi.android.mcp&amp;hl=en\"><strong>nRF Connect APP<\/strong><\/a>&nbsp;on your smartphone. Scan the BLE device and connect it, scan or receive data. <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/files.seeedstudio.com\/wiki\/wio%20terminal%20bluetooth\/Wio-connect.png\" alt=\"\" width=\"477\" height=\"285\"\/><\/figure><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>For BLE Client Usage, you should have a Wio Terminal with the latest BLE Firmware. Set up your Server UUID or MAC address, and upload Client code. For more details on the client code, click <a href=\"https:\/\/wiki.seeedstudio.com\/Wio-terminal-BLE-introduction\/\">here <\/a>for instructions.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Thus, these are the files you need to download if you already own a Wio Terminal:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><a href=\"https:\/\/files.seeedstudio.com\/wiki\/Wio-Terminal-BLE\/20200925-seeed-ambd-firmware-rpc-v1.1.0.zip\">Bluetooth Firmware Files<\/a><\/li><li><a href=\"https:\/\/github.com\/Seeed-Studio\/Seeed_Arduino_rpcBLE\">Seeed_Arduino_rpcBLE<\/a><\/li><li><a href=\"https:\/\/github.com\/Seeed-Studio\/Seeed_Arduino_rpcBLE\">Seeed_Arduino_rpcUnified<\/a><\/li><\/ol>\n\n\n\n<p>For more instructions on how you should update, click <a href=\"https:\/\/wiki.seeedstudio.com\/Wio-Terminal-Bluetooth-Overview\/\">here<\/a> to do so!<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Projects with Bluetooth\u00ae Module<\/h2>\n\n\n\n<p>Once you&#8217;ve bought your BLE module and updated it, you can now try out some cool projects!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.instructables.com\/id\/Easy-Bluetooth-Enabled-Door-Lock-With-Arduino-An\/\">Easy Bluetooth<\/a>\u00ae<a href=\"https:\/\/www.instructables.com\/id\/Easy-Bluetooth-Enabled-Door-Lock-With-Arduino-An\/\"> Enabled Door Lock With Arduino + Android<\/a><\/h3>\n\n\n\n<figure class=\"wp-block-embed-youtube aligncenter wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Bluetooth enabled door lock using Arduino. Unlock using Android phone\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/I3ntgKPkFPY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Are you someone who constantly forgets your keys whenever you get out of your house? This project allows you to make a password protected Bluetooth door lock using your Arduino, which can be unlocked by sending a four-digit pin from your Android phone!  <\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>What you&#8217;ll need:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Arduino <\/li><li>Electric Door Strike<\/li><li>Any Bluetooth Module ( or <a href=\"https:\/\/www.seeedstudio.com\/MDBT50Q-P1M-nRF52840-Based-BLE-Module-p-3148.html\">MDBT50Q-P1M nRF52840 Based BLE Module<\/a>)<\/li><li>Power Supply <\/li><li>TIP120 Transistor<\/li><li>1N4001 Diode<\/li><li>Hookup Wire <\/li><li>Solderless Breadboard<\/li><li>An Android phone (other phones are possible as well)<\/li><\/ul>\n\n\n\n<p>If this is right up your alley, click here for more information!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.instructables.com\/id\/Arduino-Control-DC-Motor-via-Bluetooth\/\">Arduino &#8211; Control DC Motor Via Bluetooth<\/a>\u00ae<\/h3>\n\n\n\n<figure class=\"wp-block-embed-youtube aligncenter wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Arduino - Control DC Motor via Bluetooth\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/nXymP6ttxD4?list=UUhA8nfOtQEsLq3Y7nLO_aKQ\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>If you&#8217;re a beginner and would like to experiment with something simple, this is perfect for you! This project not only allows you to learn about Bluetooth, but you can also learn about DC motors and Arduino!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>What you&#8217;ll need:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.seeedstudio.com\/Arduino-Uno-Rev3-p-2995.html\">Arduino Uno<\/a><\/li><li>Bluetooth Module (or <a href=\"https:\/\/www.seeedstudio.com\/MDBT42Q-nRF52832-based-BLE-module.html\">MDBT42Q &#8211; nRF52832 based BLE module<\/a>)<\/li><li>Smartphone <\/li><li>BlueTerm application<\/li><li>L293D IC<\/li><li>DC motor<\/li><li>Breadboard<\/li><li>Jumper Cables<\/li><\/ul>\n\n\n\n<p>Interested? Click <a href=\"https:\/\/www.instructables.com\/id\/Arduino-Control-DC-Motor-via-Bluetooth\/\">here<\/a> for more instructions!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.hackster.io\/fenyi\/the-smartphone-communicates-with-the-wio-terminal-via-ble-faf90a\">The Smartphone Communicates with the Wio Terminal via BLE<\/a><\/h3>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video controls src=\"https:\/\/hackster.imgix.net\/uploads\/attachments\/1192060\/vidoeh-gif_faYNEuLgS1.gif?auto=compress&amp;gifq=35&amp;w=900&amp;h=675&amp;fit=min&amp;fm=mp4\"><\/video><\/figure>\n\n\n\n<p>Just now we did mention about how you should update your Bluetooth\u00ae using the Wio Terminal. But you can actually send a message to the Wio Terminal using your smartphone!<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>What you&#8217;ll need:<\/p>\n\n\n\n<p>Hardware:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li> <a href=\"https:\/\/www.seeedstudio.com\/Wio-Terminal-p-4509.html\">Seeed Wio terminal<\/a> <\/li><\/ul>\n\n\n\n<p>Software:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li> <a href=\"https:\/\/wiki.seeedstudio.com\/Wio-Terminal-Getting-Started\/\">Arduino IDE download and Wio Terminal<\/a> <\/li><li> &nbsp;<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=no.nordicsemi.android.mcp&amp;hl=en\">nRF connect<\/a> (download on your smartphone)&nbsp; <\/li><\/ul>\n\n\n\n<p>Wio Firmware:<\/p>\n\n\n\n<p>Before uploading the code, you need to download the library to support the code.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li> &nbsp;<a href=\"https:\/\/wiki.seeedstudio.com\/Wio-Terminal-LCD-Overview\/\">Wio Terminal LCD<\/a>:  LCD screen Library Seeed_Arduino_LCD <\/li><li> <a href=\"https:\/\/wiki.seeedstudio.com\/Wio-Terminal-Bluetooth-Overview\/\">Wio terminal Bluetooth<\/a>: BLE Library Seeed_Arduino_rpcBLE<\/li><\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Instructions:<\/p>\n\n\n\n<p>Step 1: Open the nRF connect APP to search the Wio terminal device<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hackster.imgix.net\/uploads\/attachments\/1192034\/oooooooo3_EMTWPmePsC.png?auto=compress%2Cformat&amp;w=740&amp;h=555&amp;fit=max\" alt=\"\" width=\"296\" height=\"494\"\/><\/figure><\/div>\n\n\n\n<p>Step 2. Connect the Wio terminal and open the Unknown Service and then click the up arrow.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hackster.imgix.net\/uploads\/attachments\/1192035\/iiiiiiiii9_TVfVsQAfri.png?auto=compress%2Cformat&amp;w=740&amp;h=555&amp;fit=max\" alt=\"\" width=\"311\" height=\"506\"\/><\/figure><\/div>\n\n\n\n<p>Step 3: Type a message and send it!<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hackster.imgix.net\/uploads\/attachments\/1192036\/wwwww31_2NcrFexe8C.png?auto=compress%2Cformat&amp;w=740&amp;h=555&amp;fit=max\" alt=\"\" width=\"326\" height=\"537\"\/><\/figure><\/div>\n\n\n\n<p>And Tada! Your message would appear on the Wio Terminal! Cool isn&#8217;t it?<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hackster.imgix.net\/uploads\/attachments\/1192039\/wio_terminal_text_XQjvbASf5m.png?auto=compress%2Cformat&amp;w=740&amp;h=555&amp;fit=max\" alt=\"\" width=\"440\" height=\"344\"\/><\/figure><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>For the code and more information about this project, <a href=\"https:\/\/www.hackster.io\/fenyi\/the-smartphone-communicates-with-the-wio-terminal-via-ble-faf90a#code\">click <\/a>here!<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<p>With that, we&#8217;ve come to the end! Did you learn something new about Bluetooth\u00ae protocol? We&#8217;ve covered some background of Bluetooth\u00ae, an overview of Bluetooth\u00ae, some projects and applications as well! I hope this is of help to you! Check out the links down below to learn more!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Resources<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.seeedstudio.com\/blog\/2019\/08\/07\/introducing-nrf52832-and-nrf52840-product-family\/\">Introducing nRF52832 and nRF52840 Product Family<\/a>: If you&#8217;re interested in other BLE Modules.<\/li><li><a href=\"https:\/\/www.seeedstudio.com\/blog\/2020\/01\/02\/how-to-control-arduino-with-bluetooth-module-and-shields-to-get-started\/\">How to control Arduino with Bluetooth? Tutorial with Modules and Shields<\/a>: If you would like to experiment with more Bluetooth\u00ae related projects.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Bluetooth\u00ae technology is fairly common these days. From pairing wireless headphones to transferring documents, it<\/p>\n","protected":false},"author":3529,"featured_media":37012,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"iawp_total_views":0,"footnotes":""},"categories":[1],"tags":[1516,242,142],"class_list":["post-36998","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ble-modules","tag-bluetooth","tag-open-hardware"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bluetooth Protocol: Overview and Bluetooth Module - Latest News from Seeed Studio<\/title>\n<meta name=\"description\" content=\"Bluetooth technology is fairly common these days. 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