Viac nápadov od Ľuboš

Controle automatico de bomba d'àgua. http://blog.novaeletronica.com.br/controle-automatico-de-bomba-dagua-pelo-nivel-da-caixa-dagua/

Awesome water Level Indicator with ULN 2803 ~ Electrical Engineering World

Automatic water tank level controller circuit Schematic Diagram