{"id":128,"date":"2025-04-07T08:11:35","date_gmt":"2025-04-07T08:11:35","guid":{"rendered":"https:\/\/toam.dk\/?page_id=128"},"modified":"2025-04-07T08:11:35","modified_gmt":"2025-04-07T08:11:35","slug":"diy-peristaltic-pump-fertilizer-dosing-system-esp32-mosfet-control","status":"publish","type":"page","link":"https:\/\/toam.dk\/?page_id=128","title":{"rendered":"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control)"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Overview<\/h3>\n\n\n\n<p>This guide walks through building a 4-channel liquid fertilizer dosing system using peristaltic pumps, an ESP32, and a 4-channel D4184 MOSFET board. Each pump is controlled via a switch in Home Assistant, powered by ESPHome.<\/p>\n\n\n\n<p>This system is ideal for precision nutrient dosing in hydroponics or gardening, with a total cost-effective, automated setup.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Components<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Electronics<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1x ESP32 development board<\/li>\n\n\n\n<li>1x D4184 4-channel MOSFET module (AOD4184 or LR7843-based)<\/li>\n\n\n\n<li>4x Peristaltic dosing pumps (12V, max 5W each)<\/li>\n\n\n\n<li>1x 12V DC power supply (min. 2A recommended)<\/li>\n\n\n\n<li>4x Diodes (optional, for added protection if not onboard)<\/li>\n\n\n\n<li>Jumper wires (male-male, female-male)<\/li>\n\n\n\n<li>Breadboard (e.g. MB-102)<\/li>\n\n\n\n<li>24 AWG stranded wire (for each pump if only one runs at a time)<\/li>\n\n\n\n<li>4x Check valves (optional, recommended to prevent backflow)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Tubing<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Inner diameter: Match pump connectors (commonly 2.5mm)<\/li>\n\n\n\n<li>Material: Silicone is easiest to work with<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Wiring Diagram Summary<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ESP32 GPIOs<\/strong> control each MOSFET channel:\n<ul class=\"wp-block-list\">\n<li>GPIO16 -> Pump 1<\/li>\n\n\n\n<li>GPIO17 -> Pump 2<\/li>\n\n\n\n<li>GPIO18 -> Pump 3<\/li>\n\n\n\n<li>GPIO19 -> Pump 4<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>MOSFET Source pins<\/strong> must be connected to 12V PSU GND<\/li>\n\n\n\n<li><strong>Pump positive wires<\/strong> go to 12V PSU +<\/li>\n\n\n\n<li><strong>Pump negative wires<\/strong> go to each MOSFET Drain\/&#8221;Load&#8221; output<\/li>\n\n\n\n<li><strong>ESP32 GND<\/strong> is connected to the 12V PSU GND<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">ESPHome Configuration<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>output:\n  - platform: gpio\n    pin: GPIO16\n    id: pump1_output\n  - platform: gpio\n    pin: GPIO17\n    id: pump2_output\n  - platform: gpio\n    pin: GPIO18\n    id: pump3_output\n  - platform: gpio\n    pin: GPIO19\n    id: pump4_output\n\nswitch:\n  - platform: output\n    name: \"Pump 1\"\n    output: pump1_output\n  - platform: output\n    name: \"Pump 2\"\n    output: pump2_output\n  - platform: output\n    name: \"Pump 3\"\n    output: pump3_output\n  - platform: output\n    name: \"Pump 4\"\n    output: pump4_output<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Tips for Reliable Operation<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use check valves to prevent line siphoning or backflow<\/li>\n\n\n\n<li>Keep tubing lengths equal if dosing simultaneously<\/li>\n\n\n\n<li>Use ESPHome delays or automation to ensure only one pump runs at a time (if sharing thin wires)<\/li>\n\n\n\n<li>Secure tubing tightly on pump connectors to prevent leaks<\/li>\n\n\n\n<li>Add a button or automation for manual priming if needed<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Optional Enhancements<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Add momentary buttons to dose specific pumps<\/li>\n\n\n\n<li>Add flow sensors for verification<\/li>\n\n\n\n<li>Use PWM control to vary pump speed if your pump supports it<\/li>\n\n\n\n<li>Create a 3D printed case or mount for the electronics<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Safety Note<\/h3>\n\n\n\n<p>Always double-check polarity, and never power the system unattended until fully tested. If modifying the D4184 board to bypass the optocoupler, ensure proper gate resistors and shared GND are used.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>System tested successfully with ESP32 + 4x peristaltic pumps and 24 AWG wiring for single-pump-at-a-time operation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This guide walks through building a 4-channel liquid fertilizer dosing system using peristaltic pumps, an ESP32, and a 4-channel D4184 MOSFET board. Each pump is controlled via a switch in Home Assistant, powered by ESPHome. This system is ideal for precision nutrient dosing in hydroponics or gardening, with a total cost-effective, automated setup. Components [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-128","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control) - ToAm<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/toam.dk\/?page_id=128\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control) - ToAm\" \/>\n<meta property=\"og:description\" content=\"Overview This guide walks through building a 4-channel liquid fertilizer dosing system using peristaltic pumps, an ESP32, and a 4-channel D4184 MOSFET board. Each pump is controlled via a switch in Home Assistant, powered by ESPHome. This system is ideal for precision nutrient dosing in hydroponics or gardening, with a total cost-effective, automated setup. Components [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/toam.dk\/?page_id=128\" \/>\n<meta property=\"og:site_name\" content=\"ToAm\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimeret l\u00e6setid\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/toam.dk\/?page_id=128\",\"url\":\"https:\/\/toam.dk\/?page_id=128\",\"name\":\"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control) - ToAm\",\"isPartOf\":{\"@id\":\"https:\/\/toam.dk\/#website\"},\"datePublished\":\"2025-04-07T08:11:35+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/toam.dk\/?page_id=128#breadcrumb\"},\"inLanguage\":\"da-DK\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/toam.dk\/?page_id=128\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/toam.dk\/?page_id=128#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Hjem\",\"item\":\"https:\/\/toam.dk\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/toam.dk\/#website\",\"url\":\"https:\/\/toam.dk\/\",\"name\":\"ToAm\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/toam.dk\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"da-DK\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control) - ToAm","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/toam.dk\/?page_id=128","og_locale":"da_DK","og_type":"article","og_title":"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control) - ToAm","og_description":"Overview This guide walks through building a 4-channel liquid fertilizer dosing system using peristaltic pumps, an ESP32, and a 4-channel D4184 MOSFET board. Each pump is controlled via a switch in Home Assistant, powered by ESPHome. This system is ideal for precision nutrient dosing in hydroponics or gardening, with a total cost-effective, automated setup. Components [&hellip;]","og_url":"https:\/\/toam.dk\/?page_id=128","og_site_name":"ToAm","twitter_card":"summary_large_image","twitter_misc":{"Estimeret l\u00e6setid":"2 minutter"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/toam.dk\/?page_id=128","url":"https:\/\/toam.dk\/?page_id=128","name":"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control) - ToAm","isPartOf":{"@id":"https:\/\/toam.dk\/#website"},"datePublished":"2025-04-07T08:11:35+00:00","breadcrumb":{"@id":"https:\/\/toam.dk\/?page_id=128#breadcrumb"},"inLanguage":"da-DK","potentialAction":[{"@type":"ReadAction","target":["https:\/\/toam.dk\/?page_id=128"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/toam.dk\/?page_id=128#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Hjem","item":"https:\/\/toam.dk\/"},{"@type":"ListItem","position":2,"name":"DIY Peristaltic Pump Fertilizer Dosing System (ESP32 + MOSFET Control)"}]},{"@type":"WebSite","@id":"https:\/\/toam.dk\/#website","url":"https:\/\/toam.dk\/","name":"ToAm","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/toam.dk\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"da-DK"}]}},"_links":{"self":[{"href":"https:\/\/toam.dk\/index.php?rest_route=\/wp\/v2\/pages\/128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toam.dk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/toam.dk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/toam.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/toam.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=128"}],"version-history":[{"count":1,"href":"https:\/\/toam.dk\/index.php?rest_route=\/wp\/v2\/pages\/128\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/toam.dk\/index.php?rest_route=\/wp\/v2\/pages\/128\/revisions\/129"}],"wp:attachment":[{"href":"https:\/\/toam.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}