{"id":2564,"date":"2025-04-16T05:42:57","date_gmt":"2025-04-16T05:42:57","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?post_type=spl_knowledgebase&p=2564"},"modified":"2025-06-10T11:45:38","modified_gmt":"2025-06-10T11:45:38","slug":"feedvfeed-vfs-rfeed-hash-function","status":"publish","type":"spl_knowledgebase","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/programming-reference\/instructions-arranged-by-function\/hash-commands-and-functions\/thermistor-hash-command\/feedvfeed-vfs-rfeed-hash-function\/","title":{"rendered":"# Feed(Vfeed, Vfs, Rfeed) hash function"},"content":{"rendered":"\n

Valid for use with hash command:\u00a0Thermistor<\/a><\/code><\/p>\n\n\n\n

This hash function defines the electrical conditions applied to the thermistor<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Vfeed<\/code>\u00a0is the feed voltage. Unless you are doing something out of the ordinary, this will be sourced by the SPLat controller or an add-on\u00a0SPice<\/a>\u00a0board either from an analog output or as part of a dedicated thermistor port. See the data for the SPLat board you are connecting the thermistor to.<\/p>\n\n\n\n

Rfeed<\/code> is the feed resistor, usually also determined by the board. Typical values are 10000 or 10250.<\/p>\n\n\n\n

Vfs<\/code> is the full scale voltage range of the analog input. Again, documented with the specific board, though usually 5V.<\/p>\n\n\n\n

The thermistor hash command does not set the thermistor drive voltage. On the MMi202 and SL100 you need to initialise the thermistor drive voltage yourself.<\/p>\n\n\n\n

MMi202 thermistor drive voltage<\/a>\u00a0SL100 thermistor drive voltage<\/a>\u00a0(Look near the bottom of the respective pages)<\/p>\n","protected":false},"excerpt":{"rendered":"

Valid for use with hash command:\u00a0Thermistor This hash function defines the electrical conditions applied to the thermistor Vfeed\u00a0is the feed voltage. Unless you are doing…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2561,"menu_order":1,"template":"","class_list":["post-2564","spl_knowledgebase","type-spl_knowledgebase","status-publish","hentry"],"acf":[],"yoast_head":"\n# Feed(Vfeed, Vfs, Rfeed) hash function - 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=\"# Feed(Vfeed, Vfs, Rfeed) hash function - SPLat Controls\" \/>\n<meta property=\"og:description\" content=\"Valid for use with hash command:\u00a0Thermistor This hash function defines the electrical conditions applied to the thermistor Vfeed\u00a0is the feed voltage. Unless you are doing...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/programming-reference\/instructions-arranged-by-function\/hash-commands-and-functions\/thermistor-hash-command\/feedvfeed-vfs-rfeed-hash-function\/\" \/>\n<meta property=\"og:site_name\" content=\"SPLat Controls\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-10T11:45:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/Thermistor-hash-command-.png\" \/>\n\t<meta property=\"og:image:width\" content=\"249\" \/>\n\t<meta property=\"og:image:height\" content=\"187\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/programming-reference\/instructions-arranged-by-function\/hash-commands-and-functions\/thermistor-hash-command\/feedvfeed-vfs-rfeed-hash-function\/\",\"url\":\"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/programming-reference\/instructions-arranged-by-function\/hash-commands-and-functions\/thermistor-hash-command\/feedvfeed-vfs-rfeed-hash-function\/\",\"name\":\"# Feed(Vfeed, Vfs, Rfeed) hash function - 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