HI all! today I found a small difference between arduino IDE and XOD using UNO. If I read the A0 value (analog read) at XOD I get a value of 0.18 If I do the same at arduino IDE I get a value of 188. I now it’s not the problem to multiply that, but just for own interest?! Why there is an differen…

xod scales the analog values from zero to one (0-1), hence the called value if you double click on the analog node and then look at the code within that you will see how it scales the value you could add a multiplication of 1000 if you wanted to or rescale it for 0-5v or 0-500v etc if you wanted t…

It was a design decision. IDE uses 0-1023 for analog read & 0-255 for analog write. XOD used 0-1 for both, so you can feed the output from reading a POT straight into an LED node to control brightness. While IDE uses integers for analog values, XOD is using float, so 0.5 would be 1/2 of the potentia…

Not a bug at all. The analogRead inputs a precise 10-bit value, 0-1023 for the precise voltages 0/1023 (0 v) through 1023/1023 (5v, 3.3v or whatever your reference voltage is). Your XOD patch displays that 0.0 to 1.0 (normalized) fraction with 2 significant digit precision, rounded to the closes…

So does that mean that XOD gives a range of 100 steps (0.00 to 1.00), or a resolution of 100, whereas Arduino gives a range of 0-1023, or a resolution of 1024? If so why is XOD degrading the resolution? Surely it would be preferable to provide the adc value to three decimal places, which would give …

Here is the explanation [image] ANALOG INPUT range is 0.00 - 1.00 ARDUINO sensors and ADC inputs produce a 0-1023 range of numbers. XOD is not so. This is by-design. The context-free range from 0.0 to 1.0 seems like a more natural choice. In Arduino you have to map be…

Sorry @cesars , I didn’t make my point clear. I’m not suggesting that converting to a float between zero and one is a bad idea, in fact I think it’s a good idea and does make it easier to compare inputs and outputs without having to use the Arduino “map” command. What I was asking about it the resol…

[image] mogplus8: float G’day mogplus8 Just want to highlight a point to clarify any confusion of future readers :thinking: ( like me coming in late on the topic :wink:) float variables explained https://chortle.ccsu.edu/java5/Notes/chap11/ch11_2.html As that link shows the resolution of…

BUG? Analog Read

cesars October 16, 2020, 6:19am 6

Here is the explanation

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BUG? Analog Read

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