Device 2is subscribed to the same topic thatdevice 1is publishing in. So,device 2receives the message. MQTT – Messages Messages are the information that you want to exchange between your devices. It can be a message like a command or data like sensor readings, for example. MQTT – Topics...
There are two types of Hall Effect sensors, one providing analog and the other digital output. The analog sensor is composed of a voltage regulator, a Hall Element and an amplifier. From the circuit schematics we can see that the output of the sensor is analog and proportional to the Hall ...