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Results tagged with analogread
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user 30198
A standard Arduino function for measuring the voltage on an analog pin via ADC.
3
votes
Analog thermistor readings are wrong
So far I can see nothing wrong.
This is all about accuracy and being precise. That is how to deal with this problem. This is not a quick fix.
For example the resistor value has been: 10k, 7k, 6690 an …
- 3,246
1
vote
Would a 100KΩ resistor connected to ground pull an open analog line down to 0
With a 100 kΩ resistor to GND, it is not guaranteed that the value will be zero. If a (servo)motor is connected, it might get some noise.
The pull down resistor can be any value, because it is possib …
- 3,246
0
votes
Analog output gives a close range of values
Arduino is a lot of fun, but you better stay away from such modules.
The module is a resistor and a electret microphone. There is also a comparator for the digital output. When you have an electret m …
- 3,246
2
votes
Accepted
What data type are the analog pin labels (A0, A1, etc)?
As you can see in Arduino.h, the analogRead() has uint8_t as parameter. You can define them as byte or uint8_t and you don't have to use the sizeof(). …
- 3,246
3
votes
Analog pins for 4x4 matrix keypad
You can use the analog pins. I prefer {A0, A1, A2, A3} in the code instead of {14, 15, 16, 17}. That makes it easier to check if you connected the wires to the right pins.
Don't use pin 13 for an inp …
- 3,246