{"id":460,"date":"2015-02-03T08:22:19","date_gmt":"2015-02-03T08:22:19","guid":{"rendered":"http:\/\/smokycatsoftware.co.uk\/pub\/?page_id=460"},"modified":"2023-11-09T18:44:10","modified_gmt":"2023-11-09T18:44:10","slug":"sensor-problems","status":"publish","type":"page","link":"https:\/\/smokycatsoftware.co.uk\/pub\/heart-graph-guide\/sensor-problems\/","title":{"rendered":"Sensor problems"},"content":{"rendered":"\n<p>Heart Graph requires use of an external sensor for measuring heart rate, for example:<\/p>\n\n\n\n<ul>\n<li>Apple Watch<\/li>\n<li> Bluetooth 4.0 sensors<\/li>\n<li> ANT+ sensors when connected via the <a href=\"https:\/\/uk.wahoofitness.com\/devices\/accessories\/wahoo-key-16\">Wahoo Fitness Key<\/a>, an external dongle<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"267\" height=\"300\" src=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/WahooBlueHrSensor.jpg\" alt=\"WahooBlueHrSensor\" class=\"wp-image-487\" style=\"width:336px;height:377px\"\/><\/figure>\n<\/div>\n\n\n<p>Given the number of possible combinations of model of iPhone, iPad and&nbsp;iPod, different versions of iOS and the many types of heart rate sensor available, sensor connection problems are remarkably rare. However, we understand that when they do occur they&#8217;re frustrating, so we&#8217;ve collected together our advice on how to solve them.<\/p>\n\n\n\n<script>(function(t,e,s,o){var n,c,l;t.SMCX=t.SMCX||[],e.getElementById(o)||(n=e.getElementsByTagName(s),c=n[n.length-1],l=e.createElement(s),l.type=\"text\/javascript\",l.async=!0,l.id=o,l.src=\"https:\/\/widget.surveymonkey.com\/collect\/website\/js\/tRaiETqnLgj758hTBazgdwHLHThOcIdLDh72pu0lU57uqsj8oj2ZLWGF_2Bk_2FLe3dx.js\",c.parentNode.insertBefore(l,c))})(window,document,\"script\",\"smcx-sdk\");<\/script>\n\n\n\n<p>There&#8217;s no need to &#8216;pair&#8217; your Bluetooth\/ANT+ sensor explicitly with Heart Graph &#8211; the first time you start a new workout, the app will automatically connect to the first heart rate sensor it finds. For subsequent workouts, Heart Graph will&nbsp;<em>only<\/em> try to connect to this sensor (so, for example, if you train in a gym, the app won&#8217;t &nbsp;be confused by other people&#8217;s sensors). If you change sensor, have multiple sensors, or find Heart Graph has connected to the &#8220;wrong&#8221; sensor, you can register&nbsp;up to 4 valid sensors in the <a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/faq\/#AppSettings\">Heart Graph settings<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Compatibility<\/h2>\n\n\n\n<p>Heart Graph is known to be compatible with the following Bluetooth sensors, although many other Bluetooth sensors can also work with the app:<\/p>\n\n\n\n<ul>\n<li>Garmin HRM-Dual<\/li>\n<li>Mi Band<\/li>\n<li>Mio Alpha<\/li>\n<li>Mio Alpha 2<\/li>\n<li>Polar H7<\/li>\n<li>Polar H10<\/li>\n<li>Scosche Rhythm+<\/li>\n<li>Wahoo Blue<\/li>\n<li>Wahoo Tickr<\/li>\n<\/ul>\n\n\n\n<p>Connection issues with these (and other) Bluetooth sensors should be resolved by following the step-by-step tips below.<\/p>\n\n\n\n<div style=\"height:43px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>The following sensors regularly cause people to be directed to this page; please see the linked posts for more information on how to proceed.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Apple Watch<\/td><td>Please ensure that <a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/heart-graph-sensor-mode\/\">Heart Graph is set to &#8220;Apple Watch&#8221; mode<\/a> on your iPhone. Note that Heart Graph cannot connect to your Watch from an iPad.<\/td><\/tr><tr><td>Fitbit<\/td><td>Unfortunately Heart Graph is not compatible with Fitbit sensors.<\/td><\/tr><tr><td>Garmin HRM <strong>(not<\/strong> Dual)<\/td><td><a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/garmin-hrm-sensors\/\">The Garmin HRM sensors use ANT+, which requires use of an external dongle<\/a>.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Step-by-step tips<\/h2>\n\n\n<p>The tips below are for any Bluetooth 4.0 sensor connection, although some of the advice will also be applicable to ANT+ connections via\u00a0the\u00a0<a href=\"https:\/\/uk.wahoofitness.com\/devices\/accessories\/wahoo-key-16\" target=\"_blank\" rel=\"noopener noreferrer\">Wahoo Fitness Key<\/a>.<\/p>\n<ol>\n<li><strong>First of all, ensure the basics are right:<\/strong>\n<ul>\n<li>Your iPhone\/iPad has Bluetooth 4.0 support. <em>(Bluetooth 4.0 was first available in the iPhone 4s and the iPad 3; earlier models will not work with Bluetooth 4.0 heart rate sensors.)<\/em><\/li>\n<li>Bluetooth turned on in the Apple Settings of your iPhone\/iPad; if already enabled, try turning Bluetooth off and on again in the Apple Settings app (not the Control Centre).<\/li>\n<li>Heart Graph is permitted to use Bluetooth in the Apple Privacy settings: Apple Settings app -&gt; Privacy &amp; Security -&gt; Bluetooth.<\/li>\n<li>Heart rate sensor battery OK.<\/li>\n<li>Sensor not paired with another device<\/li>\n<li>If you&#8217;re using a Mi Band sensor, see <a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/using-heart-graph-with-your-mi-band-2-sensor\/\">this post for how to start the heart rate recording<\/a>.<\/li>\n<li>The sensor must be snug-fitting on your body to maintain good contact as you move.<\/li>\n<li>Most sensors detect electrical signals from the heart, and the contacts must be moist for this to work. Particularly in cold climates, you may not sweat enough to keep these moist\u00a0until some minutes into your workout.<\/li>\n<li>Try pairing your sensor explicitly in the\u00a0<a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/faq\/#AppSettings\">Heart Graph settings<\/a>: first delete any existing sensors that are listed, then tap &#8220;Search for sensors&#8221;.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-491 size-medium\" src=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/SearchForPairedSensors-300x134.png\" alt=\"SearchForPairedSensors\" width=\"300\" height=\"134\" srcset=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/SearchForPairedSensors-300x134.png 300w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/SearchForPairedSensors-604x270.png 604w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/SearchForPairedSensors.png 750w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/li>\n<li>Try the &#8220;Alternative sensor connection&#8221; functionality in Heart Graph (this feature is currently in beta development &#8211; please <a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/support\/\">let us know<\/a> whether it works for you).<br \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1133\" src=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2020\/09\/alt-sensor-300x172.png\" alt=\"\" width=\"300\" height=\"172\" srcset=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2020\/09\/alt-sensor-300x172.png 300w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2020\/09\/alt-sensor-1024x586.png 1024w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2020\/09\/alt-sensor-768x440.png 768w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2020\/09\/alt-sensor.png 1125w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/li>\n<li>Take a look at our <a title=\"Known Issues\" href=\"https:\/\/smokycatsoftware.co.uk\/pub\/known-issues\/\">Known Issues<\/a> page to see if there is already a work-around for your particular sensor.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Do other heart rate apps work on the same iPhone\/iPad?<\/strong>\n<ul>\n<li>Heart Graph uses software provided by <a href=\"http:\/\/wahoofitness.com\" target=\"_blank\" rel=\"noopener noreferrer\">Wahoo Fitness<\/a> to connect to your sensor &#8211; if the <a href=\"https:\/\/itunes.apple.com\/gb\/app\/wahoo-fitness-bluetooth-powered\/id391599899?mt=8\" target=\"_blank\" rel=\"noopener noreferrer\">Wahoo Fitness<\/a> app is working, it is very unusual for Heart Graph to have problems.<\/li>\n<li>Some heart rate sensor manufacturers offer the ability to update the firmware on your sensor. You should follow any manufacturer instructions for this procedure very carefully.<\/li>\n<li>It may help to turn your iPhone\/iPad off and on again to clear out any Bluetooth cache problems.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Can you see heart rate data in Apple&#8217;s Health app?<\/strong>\n<ul>\n<li>With iOS8 and later, you can now pair a bluetooth heart rate sensor with Apple&#8217;s Bluetooth settings, which on an iPhone will store\u00a0all heart rate data in the Health app. You should be able to see your heart rate changing in real time when viewing the Heart Rate section of the Health app, as shown for iOS 8, 9 and 10 in the screenshot below (for iOS 11 and newer, you must tap &#8220;Show All Data&#8221; and drill down to the current date to see the live heart rate values being added to Health):<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-475\" src=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/HeartRate.png\" alt=\"HeartRate\" width=\"160\" height=\"94\" srcset=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/HeartRate.png 317w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/HeartRate-300x177.png 300w\" sizes=\"auto, (max-width: 160px) 100vw, 160px\" \/><\/li>\n<li>If your sensor will not connect with Health, we recommend you contact your sensor manufacturer for support.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Perform a hard reset of your sensor<\/strong>\n<ul>\n<li>If your sensor uses the traditional button cell battery, you can reset the sensor by briefly inserting the battery the wrong way around, before then putting it in properly again.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Delete and reinstall Heart Graph<\/strong>\n<ul>\n<li>This drastic option will cause all data stored within Heart Graph to be deleted; however, if that data is in Health, you can re-import it afterwards.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Access heart rate data in real time from Health rather than with a direct connection to the sensor:<\/strong>\n<ul>\n<li>If you&#8217;re still having problems with Heart Graph, but you can see heart rate data with Health (see above), Heart Graph will automatically try to receive data from Health rather than directly from the sensor. To configure access to data in Health, please take a look at our short tutorial video:<a href=\"https:\/\/smokycatsoftware.co.uk\/Tutorials\/Health_as_Sensor_en.mp4\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-471\" src=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/Health-as-Sensor-en.png\" alt=\"Health-as-Sensor-(en)\" width=\"188\" height=\"334\" srcset=\"https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/Health-as-Sensor-en.png 188w, https:\/\/smokycatsoftware.co.uk\/pub\/wp-content\/uploads\/2015\/02\/Health-as-Sensor-en-169x300.png 169w\" sizes=\"auto, (max-width: 188px) 100vw, 188px\" \/><\/a>Please note that if you are using this option, you must keep<strong> Heart Graph as the foreground app <\/strong>on your phone, and keep the<strong> screen on <\/strong>during workouts.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Let us know if you&#8217;re still having problems<\/strong>\n<ul>\n<li>If you have followed <em>all<\/em> the steps above and the sensor is still not connecting successfully, please let us know by <a href=\"https:\/\/www.surveymonkey.co.uk\/r\/SBNHKLV\" target=\"_blank\" rel=\"noopener noreferrer\">completing our single-question anonymous SurveyMonkey survey.<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>Heart Graph requires use of an external sensor for measuring heart rate, for example: Apple Watch Bluetooth 4.0 sensors ANT+ sensors when connected via the Wahoo Fitness Key, an external dongle Given the number of possible combinations of model of iPhone, iPad and&nbsp;iPod, different versions of iOS and the many types of heart rate sensor &hellip; <a href=\"https:\/\/smokycatsoftware.co.uk\/pub\/heart-graph-guide\/sensor-problems\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Sensor problems<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":156,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-460","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P5vk4S-7q","_links":{"self":[{"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/pages\/460","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/comments?post=460"}],"version-history":[{"count":52,"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/pages\/460\/revisions"}],"predecessor-version":[{"id":1280,"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/pages\/460\/revisions\/1280"}],"up":[{"embeddable":true,"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/pages\/156"}],"wp:attachment":[{"href":"https:\/\/smokycatsoftware.co.uk\/pub\/wp-json\/wp\/v2\/media?parent=460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}