Reed switch or hall sensor?

Question

Arduino

Good evening, I am making a smart home
question 1. tell me which arudino to take for my tasks:
will the sensors be connected:
temperature, gas, vibration, hall or reed switch, TCRT5000
question 2, Hall sensor or better reed switch?
Question 3, I want to use TCRT5000 as a surface tracking module, when this sensor is covered, it should signal, do you think it will be right?

Answer 1

Without knowing the task it is impossible to determine what you need. Take Due, you can't go wrong.
There is less fuss with the reed switch, the Hall sensor is almost eternal. The choice is yours

Answer 2

1. Under a smart home, IMHO, it's worth taking Mega.
2. The Hall sensor works faster, you can set the threshold, it lives for a long time. Less fuss with the reed switch.
3. Can be used if the light and temperature are stable.

Answer 3

Dmitry evgeniy_lm
please tell me what resistors should I buy?
dht11, Reed switch 10 kOhm? and on MQ5 220 Ohm? right?

Answer 4

If I understand the logic of the script correctly, then

var timeoutId = setTimeout(
        () => {
            getData(data.command);
        },
        data.time
    );

    if (data.command == 'exit') {
        clearTimeout(timeoutId);
    }

replace with

if (data.command == 'exit') {
        return;
    }

var timeoutId = setTimeout(
        () => {
            clearTimeout(timeoutId);
            getData(data.command);
        },
        data.time
    );