{"id":1237,"date":"2025-04-10T04:50:56","date_gmt":"2025-04-10T04:50:56","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?post_type=spl_knowledgebase&#038;p=1237"},"modified":"2025-04-10T04:57:51","modified_gmt":"2025-04-10T04:57:51","slug":"cc18-analog-inputs","status":"publish","type":"spl_knowledgebase","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-controllers\/cc18-product-documentation\/cc18-external-inputs-and-outputs\/cc18-analog-inputs\/","title":{"rendered":"CC18: Analog inputs"},"content":{"rendered":"\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>This does not apply to the CC16<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>The CC18 has two analog voltage inputs. The input voltage range is 0 to Vcc, where Vcc is the +5V nominal onboard logic power supply. The onboard 5V regulator (which is effectively the analog reference voltage) is accurate to \u00b15%. The resolution is 10 bits (0.1%)<\/p>\n\n\n\n<p>These inputs are very well suited to use with the ratiometric sensor devices that are becoming common. These sensors run off a 5V logic supply and give an output proportional to the supply voltage&nbsp;<a href=\"https:\/\/www.splatco.com\/skb\/352.htm#o3808\">X<\/a>&nbsp;the quantity being measured. The inputs will also work very well with potentiometers.<\/p>\n\n\n\n<p>The following diagram shows the analog pinning and a potentiometer connected to one input.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"217\" src=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/cc18_Analog-inputs-.jpg\" alt=\"\" class=\"wp-image-1238\" srcset=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/cc18_Analog-inputs-.jpg 400w, https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/cc18_Analog-inputs--300x163.jpg 300w, https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/cc18_Analog-inputs--64x35.jpg 64w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<p>This circuit will give a floating point analog reading (<code>fAnIn 0<\/code>&nbsp;instruction) of 0 with the wiper at the top of the diagram (at the 0V end of the potentiometer) and 1.0 at the other end.<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">How to blow up the analog inputs<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apply more than \u00b124V to the analog input pins.<\/li>\n\n\n\n<li>Apply\u00a0<em>any<\/em>\u00a0external voltage to the +5V pin.<\/li>\n<\/ul>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>This does not apply to the CC16 The CC18 has two analog voltage inputs. The input voltage range is 0 to Vcc, where Vcc is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1232,"menu_order":2,"template":"","class_list":["post-1237","spl_knowledgebase","type-spl_knowledgebase","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CC18: Analog inputs - SPLat Controls<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CC18: Analog inputs - SPLat Controls\" \/>\n<meta property=\"og:description\" content=\"This does not apply to the CC16 The CC18 has two analog voltage inputs. 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