Is it just me ?
I find that there is no consistency in the way they present these specs.
For example,
for Portenta X8 the first thing we see is « Circuit Operating Voltage «
whilst for Portenant H7 it’s « Board operating voltage «
and for 33IOT,Rp2040 and MKR NB 1500 it’s labelled as « I/O voltage »
Are they referring to the same thing ? Again forgive me I am really new to electronics, i have bacground in Programming ( not that good in that field either )
Assuming ( correct me if I am wrong ) that the 3 labels are referring to the same thing , then only the UNO R3 has a Board operating voltage/Circuit operating voltage / IO voltage of 5V ?
Are all of the "INPUT VOLTAGE" referring to the power that we can supply to the VIN pin of the board ? ( i think something works differently with that regard in the case of 33IOT )
Now, assuming i have 7 sensors with these specs running simultaneously
Input Voltage: 3.3 ~ 5.5V
Output Voltage: 0 ~ 2.3V
Working Current: 3 ~ 6mA
then all of the sensors in the attached image would work fine with the said 7 sensors ?
HOWEVER
if the 7 sensors are having this specs :
Input Voltage: 5V
Output Voltage: 0 ~ 2.3V
Working Current: 3 ~ 6mA
then only UNO R3 and uNO r4 minima would work ? ( unless somehow the sensor receives its own power supply of 5 V ? ) Thoughts ?
Better if You post a link to the target. The screen image refuses to be magnified and is not readable.
Board voltage supply can be 5.0 volts but I/O voltage 3.3 volt. Such boards use a 5.0 to 3.3 volt converter for the circuit itself running on 3.3 volt.
A 5 volt circuit usually reads 3.3 volt signals correctly. BUT... Don't connect a 5 volt I/O voltage circuit output to a 3.3 volt logic input without a level conversion.
It doesn't change size at all. Changing spectacles and using an optical magnifier I got it.
It is as it is. Different manufacturers use different terminology. Home blind?
If 3.3 volt is present any ware, it is a 3.3 volt logic central circuit I would sum it up to.
If I click on the original image in the forum it enlarges. Clicking again cause it it to enlarge again to the point where only the Portenta X8, Portenta X7 and IOT33 fit on the screen which makes the text easily visible and the image can be scrolled to see more
Depends on which browser you're using.
With Firefox, you have to right-click the picture, and click "open link in new tab".
Go to the tab. Then you can zoom in by holding the Ctrl key and rolling the mouse wheel .
Just clicking on the original picture enlarges (sometimes), but won't zoom in.
Get things back to original by holding the Ctrl key and pressing "0" (zero).
Leo..
In Firefox all pics do that.
Viewing only the image in a seperate tab fixes that.
OP, there are only two logic voltages used in the Arduino world, 3.3volt and 5volt.
Board power supply can/must be the same or higher, like 5volt USB power for a 3.3volt board.
Don't make the mistake of starting off with a complicated board when you're a beginner.
I think most of us started with an Uno R3, because almost all code and libraries work with that basic 5volt-logic board. Be prepaired to run into more trouble when you're using any other board.
My crystal ball tells me that you're referring to seven TDS sensors.
That page uses the Uno R3 (which only has six analogue inputs).
Leo..
