{"id":3966,"date":"2018-08-03T15:44:03","date_gmt":"2018-08-03T22:44:03","guid":{"rendered":""},"modified":"2025-07-15T15:15:55","modified_gmt":"2025-07-15T22:15:55","slug":"3966","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/3966","title":{"rendered":"Go Direct Light and Color Sensor Troubleshooting and FAQs"},"content":{"rendered":"<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"\/product\/go-direct-light-and-color-sensor\/\">Go Direct<sup>&reg;<\/sup> Light and Color Sensor<\/a> (<nobr>GDX-LC<\/nobr>)<\/h3>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><a href=\"\/manuals\/GDX-LC\">Specifications and User Guide<\/a><\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/turbo.vernier.com\/wp-content\/uploads\/2019\/12\/product.gdx-lc._hero.002-768x432.jpg\" alt=\"\"\/><\/figure>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Troubleshooting<\/h3>\n<p><strong>General: <\/strong>Press the power button on the sensor to turn it on. Connect your sensor as described in the <a href=\"https:\/\/www.vernier.com\/til\/get-started\/go-direct\">Getting Started instructions for your device<\/a>.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Primary Test:<\/strong> Select the desired channel(s) from the list of available sensors (see, <a href=\"\/til\/20039\/\">How can change the sensor channels used with data collection for Go Direct sensors having multiple sensor channels?<\/a>). Expose the light aperture to a variety of UV, visible light, and\/or colors and confirm that the sensor reading responds appropriately. Press the power button to toggle the white LED on and off.<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Additional Troubleshooting<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/til\/3968\/\"> How do I turn the Go Direct Light and Color sensor white LED on or off?<\/a><\/li>\n<li><a href=\"\/til\/3972\/\">What is the UV Index and how is it calculated?<\/a><\/li>\n<li><a href=\"\/til\/3987\/\">Do the colors of RGB color sensor traces correspond to the red, green, and blue colors?<\/a><\/li>\n<li><a href=\"\/til\/4018\/\">What does the UV sensor in my Go Direct Light and Color sensor measure?<\/a><\/li>\n<li><a href=\"\/til\/4025\/\">What do the 650 nm, 550 nm, and 450 nm channels measure in the Go Direct Light and Color sensor?<\/a><\/li>\n<li><a href=\"\/til\/15786\/\">Go Direct sensor does not connect to LabQuest 2 via Bluetooth.<\/a><\/li>\n<li><a href=\"\/til\/4104\/\">How many wirelessly connected Go Direct sensors can I use for data collection at the same time?<\/a><\/li>\n<li><a href=\"\/til\/6827\/\">Troubleshooting Bluetooth Connections with Go Direct Sensors<\/a><\/li>\n<li><a href=\"\/til\/12943\/\">What can I do if a Go Direct sensor's Bluetooth LED flashes red and green when I try to connect to it and the connection fails?<\/a><\/li>\n<li><a href=\"\/til\/3857\/\">Will my device work with Go Direct Sensors via Bluetooth?<\/a><\/li>\n<li><a href=\"\/til\/3085\/\">How do I know if my LabQuest will work with Go Direct Sensors and Go Wireless devices?<\/a><\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>Visible Light Sensor<\/strong><br \/>\u26ac Wavelengths: 400\u2013800 nm<br \/>\u26ac Range: 0 to 150,000 lux<br \/>\u26ac Resolution<br \/>\u2003\u25aa \u00b10.2 lx (less than 10,000 lux)<br \/>\u2003\u25aa \u00b15 lx (greater than 10,000 lux)<br \/>\u26ac Maximum sampling rate: 1,000 samples\/s<\/li>\n<li><strong>UV Sensor<\/strong><br \/>\u26ac Half-sensitivity Range (approximate)<br \/>\u2003\u25aa 260 \u2013 315 nm (serial numbers starting with 099) \u2013 UVB<br \/>\u2003\u25aa 300 \u2013 425 nm (serial numbers starting with 096 or 097) \u2013 UV + Blue<br \/>\u2003\u25aa 320 \u2013 375 nm (serial numbers starting with 091, 092 or 093) \u2013 UVA<br \/>\u26ac Maximum sampling rate: 1 sample\/s<br \/>\u26ac Response Time: 0.4 s<\/li>\n<li><strong>RGB Sensor<\/strong><br \/>\u26ac Intensity Range: 0 to 1,000 (relative scale)<br \/>\u26ac Peak Response<br \/>\u2003\u25aa Red: 615 nm<br \/>\u2003\u25aa Green: 525 nm<br \/>\u2003\u25aa Blue: 465 nm<br \/>\u26ac Maximum sampling rate: 0.5 sample\/s<br \/>\u26ac Response Time: 0.4 s<\/li>\n<li>Dimensions: 8.8 cm x 6.0 cm x 3.2 cm<\/li>\n<li>Connections:<br \/>\u26ac Wireless: Bluetooth<sup>\u00ae<\/sup> v4.2 (wireless range 30 m unobstructed) <br \/>\u26ac Wired: USB 2.0 full speed<\/li>\n<li>Battery: <a href=\"http:\/\/www.vernier.com\/gdx-bat-300\">300 mA Li-Poly<\/a><br \/>\u26ac Battery Life (single, full charge): ~24 hours continuous data collection<br \/>\u26ac Battery Life (lifetime): 2 \u2013 5 years (typical)<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Calibration<\/h3>\n<p>Calibrate? No. The sensor is set to the stored calibration before shipping. If you wish to calibrate the sensor, you will need to conduct a two-point calibration. For more information, see <a href=\"\/til\/4011\/\">How do I calibrate my sensor?<\/a><\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Battery Troubleshooting<\/h3>\n<ol class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">If the sensor can be turned on when connected by USB but not when disconnected from USB, the battery either needs charging or has reached its end of life and can no longer hold a charge. <\/span><br \/>\u26ac <span style=\"font-weight: 400;\">First, try charging the sensor for several hours. <\/span><\/li>\n<li><span style=\"font-weight: 400;\">If the sensor still won\u2019t turn on when disconnected from USB, try swapping the battery with a working sensor to see if the problem follows the battery or stays with the sensor.<\/span><br \/>\u26ac If the problem stays with the sensor, the battery is probably not the issue.<br \/>\u26ac If the problem follows the battery, <span style=\"font-weight: 400;\">the battery has likely reached its end of life.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">If you intend to use this sensor wirelessly, its battery will need replacing<\/span>.<br \/><span style=\"font-weight: 400;\"><a href=\"\/product\/go-direct-300-mah-replacement-battery\/\">Go Direct&reg; 300 mAh Replacement Battery<\/a> (<nobr>GDX-BAT-300<\/nobr>)<\/span><\/li>\n<li>See <a href=\"\/til\/4014\/\">How do I remove or replace a Go Direct battery?<\/a> for more information (including a <a href=\"https:\/\/youtu.be\/Lv2yCaL0ruU\">video<\/a>).<\/li>\n<\/ol>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p class=\"has-text-align-center has-very-light-gray-background-color has-background\"><span style=\"font-weight: 400;\"><strong>Rechargeable batteries are covered by a one-year warranty.<\/strong><\/span><br \/>Batteries <span style=\"font-weight: 400;\">should last two to five years in typical use. <\/span><\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Related Products<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/micro-usb-to-usb-c-cable\/\">Micro USB to USB-C Cable<\/a> (<nobr>CB-USB-C-MICRO<\/nobr>)<\/li>\n<li><a href=\"\/product\/go-direct-charge-station\/\">Go Direct<sup>&reg;<\/sup> Charge Station<\/a> (<nobr>GDX-CRG<\/nobr>)<\/li>\n<li><a href=\"\/product\/sensor-bracket-for-go-direct\/\">Sensor Bracket for Go Direct\u00ae<\/a> (<nobr>GDX-MOUNT<\/nobr>)<\/li>\n<li><a href=\"\/product\/light-sensor\/\">Light Sensor<\/a> (<nobr>LS-BTA<\/nobr>)<\/li>\n<li><a href=\"\/product\/uva-sensor\/\">UVA Sensor<\/a> (<nobr>UVA-BTA<\/nobr>)<\/li>\n<li><a href=\"\/product\/uvb-sensor\/\">UVB Sensor<\/a> (<nobr>UVB-BTA<\/nobr>)<\/li>\n<\/ul>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Replacement Parts<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/go-direct-300-mah-replacement-battery\/\">Go Direct&reg; 300 mAh Replacement Battery<\/a> (<nobr>GDX-BAT-300<\/nobr>)<\/li>\n<li><a href=\"\/product\/micro-usb-cable\/\">Micro USB Cable<\/a> (<nobr>CB-USB-MICRO<\/nobr>)<\/li>\n<\/ul>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Specifications and User Guide Troubleshooting General: Press the power button on the sensor to turn it on. Connect your sensor as described in the Getting&#8230;<\/p>\n","protected":false},"author":86433,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[1788,6666,6669,6668,6667,1616,3452,720,1191,1192,1193],"class_list":["post-3966","post","type-post","status-publish","format-standard","hentry","tag-color","tag-gdx-lc","tag-gdx-lcmain","tag-gdxlcmain","tag-lcmain","tag-light","tag-main","tag-maintil","tag-uv","tag-uva","tag-uvb"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/3966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/86433"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=3966"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/3966\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=3966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=3966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=3966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}