Pomiar Temperatury – opis

Aplikacja do pomiaru temperatury składa się z dwóch elementów .

  • Czujnika temperatury opartego o układ ESP8266 oraz czujnik temperatury i ciśnienia BMP280
  • Aplikacji

Czujnik temperatury oparty jest o standardowy układ Wemos D1 ESP8266 plus czujnik BMP 280 w wersji 3,3 V wraz czujnikiem ciśnienia . Opis i dane techniczne znajdziemy na tej stronie https://www.wemos.cc/en/latest/d1/d1_mini.html. Z interesujących nas parametrów to zasilanie 5 V oraz komunikacja przez WIFI z podłączeniem do domowej sieci . Pobór prądu to około 80 mA . Niestety przy takim poborze raczej nie realne jest zasilanie za pomocą baterii. Sam element mierzący to BMP 280, opis https://www.bosch-sensortec.com/products/environmental-sensors/pressure-sensors/bmp280/. Jako oprogramowanie układu użyto Esp Easy . Koszt całości czujnik plus układ ESP8266 to 20 zł. Oczywiście należy jeszcze doliczyć koszt obudowy , zasilacza oraz płytki drukowanej. Sam czujnik BMP 280

Wemos D1 ze strony https://www.wemos.cc/en/latest/d1/d1_mini.html

Aplikacje powiązane

Do wyświetlania wskazań stworzyłem kilka aplikacji . Celem było przetestowanie obecnie dostępnych rozwiązań technologicznych i ocenienie na ile dostępne platformy są przyjazne dla stworzenia prostej aplikacji . Założeniem było wyświetlanie danych na telefonie , stronie www oraz komputerze PC . Interfejs użytkownika ma być możliwie prosty , wartości mają być wyświetlane jako wykres kołowy z odpowiednią skalą , dodatkowo ma być wyświetlana odczytana wartość liczbowa ( 2 miejsca po przecinku ) .

Stworzyłem kilka aplikacji ( lista będzie uzupełniana wraz z postępem prac nad opisem )

Podsumowanie

Tu postaram się opisać wnioski które nasunęły mi się podczas tworzenia aplikacji.

Strona w budowie

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