Ce module s\u2019inscrit dans mon syst\u00e8me global de gestion de piscine (voir mon article sur la gestion d’une piscine avec ESPHome<\/a>).<\/p>\n\n\n\n Capteur HX711<\/strong> : Un module de pesage avec une jauge de contrainte (capacit\u00e9 20 kg), parfait pour un bidon de pH moins (poids typique : 15-20 kg plein). Disponible sur AliExpress<\/a> pour environ 5\u20ac.<\/p>\n<\/div><\/div>\n\n\n\n Le montage est assez simple :<\/p>\n\n\n\n le c\u00e2blage des jauges de contrainte<\/p>\n<\/div><\/div>\n\n\n\n Le code ESPHome est con\u00e7u pour lire le poids via le HX711, appliquer des filtres pour stabiliser les mesures, et envoyer les donn\u00e9es \u00e0 Home Assistant. Voici le code complet, suivi d\u2019une explication d\u00e9taill\u00e9e :<\/p>\n\n\n\n la derni\u00e8re version est t\u00e9l\u00e9chargeable ici: https:\/<\/a>\/<\/a>github.com\/remycrochon\/home-assistant\/blob\/master\/esphome\/esp129-pesage-chlore.yaml<\/a><\/p>\n\n\n\n L\u2019\u00e9talonnage est crucial pour des mesures pr\u00e9cises :<\/p>\n\n\n\n Le module s\u2019int\u00e8gre automatiquement via l\u2019API ESPHome. Dans Home Assistant, j\u2019ai cr\u00e9\u00e9 une carte Lovelace avec :<\/p>\n\n\n\n Nous pouvons aussi configur\u00e9 une automatisation pour envoyer une notification Telegram si le poids descend sous 2 kg (bidon presque vide) :<\/p>\n\n\n\n Apr\u00e8s plusieurs mois d\u2019utilisation (mars 2025) :<\/p>\n\n\n\n Ce module de pesage est une addition pratique \u00e0 mon syst\u00e8me de gestion de piscine. Il me permet de suivre pr\u00e9cis\u00e9ment la consommation de pH moins et d\u2019\u00e9viter les interruptions de r\u00e9gulation. Le co\u00fbt total est tr\u00e8s raisonnable (< 10\u20ac), et l\u2019int\u00e9gration dans Home Assistant est un vrai plus pour l\u2019automatisation. Si vous avez des questions, laissez un commentaire !<\/p>\n\n\n\n Intro Dans ce projet, j\u2019ai d\u00e9velopp\u00e9 un module de pesage pour surveiller le poids de mon bidon de pH moins (acide pour r\u00e9guler le pH de ma piscine). Ce syst\u00e8me … <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[15,17,33],"class_list":["post-3322","post","type-post","status-publish","format-standard","hentry","category-homeassistant","tag-esp32","tag-esphome","tag-piscine"],"_links":{"self":[{"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/posts\/3322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/comments?post=3322"}],"version-history":[{"count":23,"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/posts\/3322\/revisions"}],"predecessor-version":[{"id":4133,"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/posts\/3322\/revisions\/4133"}],"wp:attachment":[{"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/media?parent=3322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/categories?post=3322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/domo.rem81.com\/index.php\/wp-json\/wp\/v2\/tags?post=3322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Mat\u00e9riel Utilis\u00e9<\/h1>\n\n\n\n
Montage<\/h1>\n\n\n\n
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![\"\"](\"https:\/\/domo.rem81.com\/wp-content\/uploads\/2025\/03\/Capture-decran-du-2025-03-25-08-08-05.png\")
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![\"\"](\"https:\/\/domo.rem81.com\/wp-content\/uploads\/2025\/03\/Capture-decran-du-2025-03-25-08-12-14.png\")
<\/figure>Configuration et Code ESPHome<\/h1>\n\n\n\n
Code ESPHome<\/h2>\n\n\n\n
substitutions:\n device_name: esp129-pesage-chlore\n adress_ip: \"192.168.0.129\"\n\nesphome:\n name: \"esp129-pesage-chlore\"\n\nesp8266:\n board: d1_mini\n framework:\n version: recommended \n \n# Enable Home Assistant API\napi:\n\nweb_server:\n port: 80\n\nota:\n - platform: esphome\n\nwifi:\n ssid: !secret wifi_ssid\n password: !secret wifi_password\n reboot_timeout: 5min\n\n manual_ip:\n static_ip: ${adress_ip}\n gateway: 192.168.0.254\n subnet: 255.255.255.0\n\ncaptive_portal:\nlogger:\n baud_rate: 0 # Disable UART logger if using UART0 (pins 1,3)\n\nnumber:\n - platform: template\n name: \"Offset poids chlore\"\n id: offset_poids_chlore\n optimistic: true\n restore_value: true\n mode: box\n min_value: -10000\n max_value: 10000\n unit_of_measurement: \"g\"\n step: 1\n icon: mdi:weight-kilogram\n\nsensor:\n - platform: uptime\n type: seconds\n name: \"Uptime\"\n\n - platform: hx711\n name: \"poids chlore brut\"\n id: poids_chlore_brut\n dout_pin: D1 # DT\n clk_pin: D0 # SCK\n gain: 128\n update_interval: 10s\n accuracy_decimals: 1\n # moyenne sur 15*10s-Affichage toutes les 5*10s avec un Update_interval \u00e0 10s en mode \u00e9talonnage\n # L'offset correspond au poids du bidon vide\n filters:\n - sliding_window_moving_average:\n window_size: 15\n send_every: 5\n send_first_at: 1\n - calibrate_linear:\n - -262000 -> 0\n - 174400 -> 15.5\n unit_of_measurement: kg\n icon: mdi:scale\n\n - platform: template\n name: \"poids chlore\"\n update_interval: 10s\n accuracy_decimals: 1\n lambda: |-\n return id(poids_chlore_brut).state - (id(offset_poids_chlore).state\/1000);\n unit_of_measurement: kg\n icon: mdi:scale\n\nswitch:\n - platform: restart\n name: \"Restart\"\n\nbinary_sensor:\n - platform: status\n name: \"Status\" <\/code><\/pre>\n\n\n\nExplication du Code<\/h2>\n\n\n\n
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\u00c9talonnage du HX711<\/h2>\n\n\n\n
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Int\u00e9gration dans Home Assistant<\/h1>\n\n\n\n
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![\"\"](\"https:\/\/domo.rem81.com\/wp-content\/uploads\/2024\/07\/image-1.png\")
<\/figure>\n\n\n\nautomation:\n - alias: Alerte Bidon pH Moins Vide\n trigger:\n platform: numeric_state\n entity_id: sensor.esp129_poids_ph_moins\n below: 2\n action:\n - service: notify.telegram\n data:\n message: \"\u26a0\ufe0f Bidon de pH moins presque vide ! Poids restant : {{ states('sensor.esp129_poids_ph_moins') }} kg\"<\/code><\/pre>\n\n\n\nR\u00e9sultats<\/h1>\n\n\n\n
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Am\u00e9liorations Possibles<\/h1>\n\n\n\n
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Conclusion<\/h1>\n\n\n\n
Liste des publications en lien avec cet article:<\/h1>\n\n\n\n
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