Hi, first of all,I'm new to Arduino and I'm not an EE person, I'm more of a programmer guy so do forgive me if I ask stupid questions.
All those black boxes on the diagram are Hall Effect Sensors which consume around 9mA max?(if i'm not wrong) Here is the datasheet. http://www.farnell.com/datasheets/1538021.pdf 9x9mA will be 81mA.
So I am connecting 9 Hall Effect Sensors to the Arduino Mega 2560 , I am taking the outputs from the sensors and feeding it into the analog inputs of the Arduino.
The Arduino will read the analog inputs and pass it to my PC via USB(Serial)
Now here is my problem: 1. Is Arduino Mega alone enough to power up all the 9 Hall Effect Sensors? 2. Will it cause any false readings? 3. Will it overheat? 4. Since I plugged in a wall adapter and USB together, which power source will arduino draw from?The wall or my PC? 5. Will my Serial communication be affected if I plug in both the 9V and USB?
Thanks for reading my post.