Best Microcontroller for Low-Power IoT Applications with Real-Time Data Processing

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It may not display this or other websites correctly.<br />You should upgrade or use an <a href="https://www.google.com/chrome/" target="_blank" rel="noopener">alternative browser</a>.</div> <div class="p-body-header"> <div class="p-title "> <h1 class="p-title-value">Best Microcontroller for Low-Power IoT Applications with Real-Time Data Processing</h1> </div> <div class="p-description"> <ul class="listInline listInline--bullet"> <li> <i class="fa--xf fal fa-user" aria-hidden="true" title="Thread starter"></i> <span class="u-srOnly">Thread starter</span> <a href="/members/jane-will.694353/" class="username u-concealed" dir="auto" data-user-id="694353" data-xf-init="member-tooltip">Jane Will</a> </li> <li> <i class="fa--xf fal fa-clock" aria-hidden="true" title="Start date"></i> <span class="u-srOnly">Start date</span> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/" class="u-concealed"><time class="u-dt" dir="auto" datetime="2025-02-19T21:55:52+0000" data-time="1740002152" data-date-string="Feb 19, 2025" data-time-string="9:55 PM" title="Feb 19, 2025 at 9:55 PM">Wednesday at 9:55 PM</time></a> </li> </ul> </div> </div> <div class="p-body-main p-body-main--withSidebar "> <div class="p-body-contentCol"></div> <div class="p-body-sidebarCol"></div> <div class="p-body-content">  <div id='div-gpt-eda_wallpaper'> <script> googletag.cmd.push(function() { googletag.display('div-gpt-eda_wallpaper'); }); </script> </div> <div class="p-body-pageContent"> <div class="block block--messages " data-xf-init="lightbox select-to-quote" data-message-selector=".js-post" data-lb-id="thread-414092"> <div class="block-outer"></div> <div class="block-outer js-threadStatusField"></div> <div class="block-container"> <div class="block-body"> <article class="message message--post js-post js-inlineModContainer " data-author="Jane Will" data-content="post-1788990" id="js-post-1788990" > <span class="u-anchorTarget" id="post-1788990"></span> <div class="message-header"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/post-1788990" rel="nofollow" > <time class="u-dt" dir="auto" datetime="2025-02-19T21:55:52+0000" data-time="1740002152" data-date-string="Feb 19, 2025" data-time-string="9:55 PM" title="Feb 19, 2025 at 9:55 PM">Wednesday at 9:55 PM</time> </a> </li> </ul> <ul class="message-attribution-opposite message-attribution-opposite--list "> <li> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/post-1788990" class="message-attribution-gadget" data-xf-init="share-tooltip" data-href="/posts/1788990/share" aria-label="Share" rel="nofollow"> <i class="fa--xf fal fa-share-alt" aria-hidden="true"></i> </a> </li> <li> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/post-1788990" rel="nofollow"> #1 </a> </li> </ul> </header> </div> <div class="message-inner"> <div class="message-cell message-cell--user"> <section class="message-user" > <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/jane-will.694353/" class="avatar avatar--m avatar--default avatar--default--dynamic" data-user-id="694353" data-xf-init="member-tooltip" style="background-color: #adadeb; color: #2e2eb8"> <span class="avatar-u694353-m" role="img" aria-label="Jane Will">J</span> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/jane-will.694353/" class="username " dir="auto" data-user-id="694353" data-xf-init="member-tooltip">Jane Will</a></h4> <h5 class="userTitle message-userTitle" dir="auto">Newbie</h5> </div> <img src="/styles/images/ranks/alevel1.gif" alt="Newbie level 1"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Feb 19, 2025</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>1</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/jane-will.694353" class="fauxBlockLink-linkRow u-concealed">0</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>0</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>1</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 10 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1788990" data-lb-caption-desc="Jane Will · Feb 19, 2025 at 9:55 PM"> <article class="message-body js-selectToQuote"> <div > <div class="bbWrapper">Hi everyone,<br /> <br /> I’m a research student working on an IoT project that requires real-time data processing with low power consumption. I’m looking for a microcontroller that supports wireless connectivity (Wi-Fi or BLE), has efficient power management, and can handle sensor data processing.<br /> <ul> <li data-xf-list-type="ul">Would the ESP32 be sufficient, or are there better alternatives for low-power IoT applications?</li> <li data-xf-list-type="ul">How important is using an RTOS for managing multiple tasks in such projects?</li> <li data-xf-list-type="ul">Any suggestions for development tools or platforms that streamline IoT prototyping?</li> </ul>Thanks in advance for your advice!</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/reply?quote=1788990" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" 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class="block-container lbContainer" data-xf-init="lightbox select-to-quote" data-message-selector=".js-post" data-lb-id="thread-414092" data-lb-universal="0"> <div class="block-body js-replyNewMessageContainer"> <article class="message message--post js-post js-inlineModContainer " data-author="KlausST" data-content="post-1788997" id="js-post-1788997" itemscope itemtype="https://schema.org/Answer" itemid="https://www.edaboard.com/posts/1788997/"> <meta itemprop="parentItem" itemscope itemid="https://www.edaboard.com/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/" /> <span class="u-anchorTarget" id="post-1788997"></span> <div class="message-header"> <header class="message-attribution message-attribution--split"> <ul class="message-attribution-main listInline "> <li class="u-concealed"> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/post-1788997" rel="nofollow" itemprop="url"> 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itemtype="https://schema.org/Person" itemid="https://www.edaboard.com/members/klausst.544298/"> <meta itemprop="url" content="https://www.edaboard.com/members/klausst.544298/" /> <div class="message-avatar "> <div class="message-avatar-wrapper"> <a href="/members/klausst.544298/" class="avatar avatar--m" data-user-id="544298" data-xf-init="member-tooltip"> <img src="/data/avatars/m/544/544298.jpg?1591959018" srcset="/data/avatars/l/544/544298.jpg?1591959018 2x" alt="KlausST" class="avatar-u544298-m" width="96" height="96" loading="lazy" itemprop="image" /> </a> </div> </div> <div class="message-userDetails"> <h4 class="message-name"><a href="/members/klausst.544298/" class="username " dir="auto" data-user-id="544298" data-xf-init="member-tooltip"><span itemprop="name">KlausST</span></a></h4> <h5 class="userTitle message-userTitle" dir="auto" itemprop="jobTitle">Advanced Member level 7</h5> </div> <img src="/styles/images/ranks/hlevel4.gif" alt="Advanced Member level 7"> <div class="message-userExtras"> <dl class="pairs pairs--justified joinedBlock"> <dt>Joined</dt> <dd>Apr 17, 2014</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed"> <dt>Messages</dt> <dd>26,545</dd> </dl> <dl class="pairs pairs--justified"> <dt> Helped</dt> <dd>4,933</dd> </dl> <dl class="pairs pairs--justified"> <dt>Reputation </dt> <dd> <a href="/reputation/authors/klausst.544298" class="fauxBlockLink-linkRow u-concealed">9,887</a> </dd> </dl> <dl class="pairs pairs--justified"> <dt>Reaction score</dt> <dd>5,841</dd> </dl> <dl class="pairs pairs--justified pairs--xbBoxed trophyBlock"> <dt>Trophy points</dt> <dd>1,393</dd> </dl> <dl class="pairs pairs--justified creditBlock"> <dt title="Activity points">Activity points</dt> <dd> <a href="/activity/" data-xf-click="overlay" class="fauxBlockLink-blockLink u-concealed"> 178,948 </a> </dd> </dl> </div> <span class="message-userArrow"></span> </section> </div> <div class="message-cell message-cell--main"> <div class="message-main js-quickEditTarget"> <div class="message-content js-messageContent"> <div class="message-userContent lbContainer js-lbContainer " data-lb-id="post-1788997" data-lb-caption-desc="KlausST · Feb 20, 2025 at 2:48 AM"> <article class="message-body js-selectToQuote"> <div itemprop="text"> <div class="bbWrapper">Hi,<br /> <br /> <blockquote data-attributes="member: 694353" data-quote="Jane Will" data-source="post: 1788990" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1788990" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1788990">Jane Will said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Wi-Fi or BLE </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>the power demand between WiFi and BLE differs significantly. depending on ON time and data transer .. it could be a facor of 100.<br /> It seems you did no reseaarch on your own. You want us to do this for you . This is neither fair nor are we your workers. <br /> A forum is not meant to do others work. It is meant that we help ... but still you have to do the main job .. and ask us for some detailes you are unsure.<br /> We like to help.<br /> <br /> <blockquote data-attributes="member: 694353" data-quote="Jane Will" data-source="post: 1788990" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1788990" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1788990">Jane Will said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> has efficient power management </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>same here. You have to elaborate on this. What power states do you see with which timing. You need to draw diagrams. First we expect you to do this job, especially we can´t know these informations. It makes a big difference whether you need sensor data for an earthquake movement with hundreds of samples each second or you want to monitor the movement of the two foundations of a bridge ... so maybe once per day.<br /> <br /> <blockquote data-attributes="member: 694353" data-quote="Jane Will" data-source="post: 1788990" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1788990" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1788990">Jane Will said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> and can handle sensor data processing. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>same here. Is it a high resolution 3D sensor with a huge data amount (maybe 1 million data points need to be processed wihtin milliseconds) ... or a simple PT100 (with maybe just 1 single data pint every minute)<br /> <br /> Power consumption wise it makes a big difference which sensor you use and whether the sensor continously needs to be active .. or can be switched OFF 99% of the time.<br /> <br /> <blockquote data-attributes="member: 694353" data-quote="Jane Will" data-source="post: 1788990" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1788990" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1788990">Jane Will said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Would the ESP32 be sufficient, </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>An ESP32 may contain dual core 32 bit processor with 240 MHz system clock each. No very flexible power saving options.<br /> Is it sufficient? How can we know? It provides a lot of processing power ... but has not the best real time DSP instruction set. <br /> Due to the huge processing power .. it obviously consumes a lot of power.<br /> <br /> It´s also a question of "what" data you want to send via the wireless interface. It can be a single integer 16 bit value each hour, it also can be a high resolution 2D colored picture, it also can be an HTML page (simple or complex) transferred to each client (maybe thousands of clients spread over the whole world)<br /> <br /> <blockquote data-attributes="member: 694353" data-quote="Jane Will" data-source="post: 1788990" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1788990" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1788990">Jane Will said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> How important is using an RTOS </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>RTOS or not is the choice of the programming person and the demand of the application.<br /> We simply can not answer this. .. especially not without any useful information from your side.<br /> <br /> Depending on application .. you may use a low power MSP430 and an external BLE module ... and a low UP_time rate ... and may consume less than a milliwatt in average. <br /> Or you use an ESP32 with continous sending data via WiFi and draw more than 1000 times the power. It´s a huge range.<br /> <br /> *****<br /> Power consumption, data rates, packet size, sensor count, sample rate .. are values measurement with <u>numbers</u> (and units). <br /> Check on your own: The only number we see in your post is the "32" of the ESP32 ... <br /> Thus basically we have <u>zero information</u> about your application we can calculate with. Zero.<br /> <br /> So .. before we can help you ... <u>you need to do your job</u> and decide all your application informations.<br /> <br /> Klaus</div> </div> <div class="js-selectToQuoteEnd"> </div> </article> </div> </div> <footer class="message-footer"> <div class="message-microdata" itemprop="interactionStatistic" itemtype="https://schema.org/InteractionCounter" itemscope> <meta itemprop="userInteractionCount" content="0" /> <meta itemprop="interactionType" content="https://schema.org/LikeAction" /> </div> <div class="message-actionBar actionBar"> <div class="actionBar-set actionBar-set--external"> <a href="/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/reply?quote=1788997" class="actionBar-action actionBar-action--reply" title="Reply, quoting this message" rel="nofollow" data-xf-click="quote" data-quote-href="/posts/1788997/quote">Reply</a> </div> </div> <div class="reactionsBar js-reactionsList "> </div> <br/> <div 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Are you sure you want to submit this form?", attach: "Attach files", rich_text_box: "Rich text box", close: "Close", link_copied_to_clipboard: "Link copied to clipboard.", text_copied_to_clipboard: "Text copied to clipboard.", loading: "Loading…", you_have_exceeded_maximum_number_of_selectable_items: "You have exceeded the maximum number of selectable items.", processing: "Processing", 'processing...': "Processing…", showing_x_of_y_items: "Showing {count} of {total} items", showing_all_items: "Showing all items", no_items_to_display: "No items to display", number_button_up: "Increase", number_button_down: "Decrease", push_enable_notification_title: "Push notifications enabled successfully at Forum for Electronics", push_enable_notification_body: "Thank you for enabling push notifications!", pull_down_to_refresh: "Pull down to refresh", release_to_refresh: "Release to refresh", refreshing: "Refreshing…" , "svStandardLib_time.day": "{count} day", "svStandardLib_time.days": "{count} days", "svStandardLib_time.hour": "{count} hour", "svStandardLib_time.hours": "{count} hours", "svStandardLib_time.minute": "{count} minutes", "svStandardLib_time.minutes": "{count} minutes", "svStandardLib_time.month": "{count} month", "svStandardLib_time.months": "{count} months", "svStandardLib_time.second": "{count} second", "svStandardLib_time.seconds": "{count} seconds", "svStandardLib_time.week": "time.week", "svStandardLib_time.weeks": "{count} weeks", "svStandardLib_time.year": "{count} year", "svStandardLib_time.years": "{count} years" }); </script> <form style="display:none" hidden="hidden"> <input type="text" name="_xfClientLoadTime" value="" id="_xfClientLoadTime" title="_xfClientLoadTime" tabindex="-1" /> </form>  <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "QAPage", "url": "https://www.edaboard.com/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/", "mainEntity": { "@type": "Question", "@id": "https://www.edaboard.com/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/", "name": "Best Microcontroller for Low-Power IoT Applications with Real-Time Data Processing", "datePublished": "2025-02-19T21:55:52+00:00", "url": "https://www.edaboard.com/threads/best-microcontroller-for-low-power-iot-applications-with-real-time-data-processing.414092/", "text": "Hi everyone,\n\nI\u2019m a research student working on an IoT project that requires real-time data processing with low power consumption. I\u2019m looking for a microcontroller that supports wireless connectivity (Wi-Fi or BLE), has efficient power management, and can handle sensor data processing.\n\nWould the ESP32 be sufficient, or are there better alternatives for low-power IoT applications?\nHow important is using an RTOS for managing multiple tasks in such projects?\nAny suggestions for development tools or platforms that streamline IoT prototyping?\n\nThanks in advance for your advice!", "answerCount": 1, "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.edaboard.com/members/jane-will.694353/", "name": "Jane Will", "url": "https://www.edaboard.com/members/jane-will.694353/" }, "suggestedAnswer": [ { "@type": "Answer", "datePublished": "2025-02-20T02:48:26+00:00", "url": "https://www.edaboard.com/posts/1788997/", "text": "Hi,\n\n\nWi-Fi or BLE\n\nthe power demand between WiFi and BLE differs significantly. depending on ON time and data transer .. it could be a facor of 100.\nIt seems you did no reseaarch on your own. You want us to do this for you . This is neither fair nor are we your workers. \nA forum is not meant to do others work. It is meant that we help ... but still you have to do the main job .. and ask us for some detailes you are unsure.\nWe like to help.\n\n\nhas efficient power management\n\nsame here. You have to elaborate on this. What power states do you see with which timing. You need to draw diagrams. First we expect you to do this job, especially we can\u00b4t know these informations. It makes a big difference whether you need sensor data for an earthquake movement with hundreds of samples each second or you want to monitor the movement of the two foundations of a bridge ... so maybe once per day.\n\n\nand can handle sensor data processing.\n\nsame here. Is it a high resolution 3D sensor with a huge data amount (maybe 1 million data points need to be processed wihtin milliseconds) ... or a simple PT100 (with maybe just 1 single data pint every minute)\n\nPower consumption wise it makes a big difference which sensor you use and whether the sensor continously needs to be active .. or can be switched OFF 99% of the time.\n\n\nWould the ESP32 be sufficient,\n\nAn ESP32 may contain dual core 32 bit processor with 240 MHz system clock each. No very flexible power saving options.\nIs it sufficient? How can we know? It provides a lot of processing power ... but has not the best real time DSP instruction set. \nDue to the huge processing power .. it obviously consumes a lot of power.\n\nIt\u00b4s also a question of \"what\" data you want to send via the wireless interface. It can be a single integer 16 bit value each hour, it also can be a high resolution 2D colored picture, it also can be an HTML page (simple or complex) transferred to each client (maybe thousands of clients spread over the whole world)\n\n\nHow important is using an RTOS\n\nRTOS or not is the choice of the programming person and the demand of the application.\nWe simply can not answer this. .. especially not without any useful information from your side.\n\nDepending on application .. you may use a low power MSP430 and an external BLE module ... and a low UP_time rate ... and may consume less than a milliwatt in average. \nOr you use an ESP32 with continous sending data via WiFi and draw more than 1000 times the power. It\u00b4s a huge range.\n\n*****\nPower consumption, data rates, packet size, sensor count, sample rate .. are values measurement with numbers (and units). \nCheck on your own: The only number we see in your post is the \"32\" of the ESP32 ... \nThus basically we have zero information about your application we can calculate with. Zero.\n\nSo .. before we can help you ... you need to do your job and decide all your application informations.\n\nKlaus", "upvoteCount": 0, "author": { "@type": "Person", "@id": "https://www.edaboard.com/members/klausst.544298/", "name": "KlausST", "url": "https://www.edaboard.com/members/klausst.544298/" } } ] }, "publisher": { "@type": "Organization", "name": "Forum for Electronics", "description": "International Electronics Discussion Forum: EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals", "url": "https://www.edaboard.com" } } </script> <script> $(function(){ var notice = $('.xb-welcome-notice'); if(notice.length){ var cookie = XF.Cookie.get('hide_welcome_notice'); if(!cookie){ XF.Cookie.set('hide_welcome_notice', Date.now()); notice.show(); } else if ((Date.now() - cookie) > 8.64e+7){ XF.Cookie.set('hide_welcome_notice', Date.now()); notice.show(); } else { notice.hide(); } } }); </script> </div> </body> </html>

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