Arduino micro 12 analog sensors

Other Hardware Sensors
1

hello .this is my first topic about arduinos.
first of all i dont know if my topic is in the right place ,
so forgive me if i am wrong.
so , i have a project with an arduino micro ,
in which i will connect 12 sharp ir analog sensors .
my question is about the power that micro needs to power those sensors.
for the test ,to see the readings i will use the usb connector of the arduino connected to the pc .
for the final project i will use an android player to connect the micro with sensors to read the values of the sensors and do other things .
so my question is :
is it possible the android cannot power enough the sensors to get correct values ?
thank you for every help

2

Welcome to the forum.

Which sensors are they ?
Some Sharp IR distance sensors need 33mA, some need 5mA.
12 * 33mA = 400mA

Can you tell what your project is about ? Please give us a broader view.

3

Hi .
I have 9 sensors Gp2y0a41sk0f and 3 gp2y0a21yk0f .
The project is to detect throwing object to recycling bins . With the usb from my pc I have a problem after I connect 4 sensors (unstable values ) but I know that android usb (the final power source in which the arduino will send the values to ) is more powerful and close enough to 5 volt .
I

4

The first one uses 12mA and the second one 30mA.
9 * 12mA + 3 * 30mA = 200mA
That should work, either with a desktop computer or a smartphone.

If you have a good USB cable, then any desktop computer or laptop should have no problem at all with 200mA. Is something wrong with the computer or the USB cable ?

Do you have a multimeter to check the voltages ?
Both IR sensors need 4.5V minimum.

5

I think the problem is with my computer because I use usb extension .but as the consumption is 200mA i will power the arduino with a usb hub with external power for the tests .i didn’t check the voltage from the usb but I will do it for sure to check if indeed my pc usb has the problem .thank you for the help and I will inform for the results

6

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