Questions tagged [mathematics]

Question 1

I've designed an apparatus that uses stepper motors, and they are linked together so that when armature A turns, it consequently moves armature B by a ratio of 1/4. In order to keep armature B in the ...

Question 2

Here I asked about how to add an hysteresis on ADC readings. The answer received was very good and it worked out of the box. Still I'm having troubles trying to generalize the resample function in ...

Question 3

I need to do some math with vars from an attitude sensor (acclerometers and gyroscopes) on an esp8266. int32_t math with those vars does not have enough range and the float math operations are ...

Question 4

In python there is the object set that resembles a mathematical set, namely, you can remove elements from it, add elements to it, you can calculate the intersection/union between two sets, etc. Is ...

Question 5

The following code reads the DHT22 temperature and humidity values, assuming the pin value as the sensor's host pin. When the temperature drops below 0°C, this code returns inadequate values in the ...

Question 6

I'm trying to execute a math of analog read but I get some weird result.. I searched about int and floats but didn't understand.. My code is : #include <SevSeg.h> SevSeg sevSeg; int bitsChange ...

Question 7

I have an array of hexadecimal values as given below. byte Hexa_Val[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; I want to increase this array from the end. As in, go from {0x00, 0x00, 0x00, ...

Question 8

I have a BEAUTIFUL doppler radar signal here from a 24.050-24.250 GHZ sensor measuring a very small object at 143 fps speed (speed from another 10 GHZ radar) in a measuring area of about 300mm-500mm ...

Question 9

I have this code which provides an erroneous unsigned long number. CODE: char buff[100]; int unsigned long bytes; bytes = 48 * 70 * 144; sprintf(buff,"%lu bytes\n", bytes); BTPort.print(...

Question 10

I am looking for a way of generating booleans rapidly. For booleans, one usually uses random(0,2); but in my case I need about 250 booleans and calling random every time is slow. So I thought about ...

Question 11

I am interested in calculating the amp/hour output of a solar panel using an Arduino. I am confident I can get the voltage (with a voltage divider) & the amperage (with an ACS712). My question is ...

Question 12

I am attempting to calculate the time between pulses by comparing the micros() timestamp. I understand that you cannot just simply subtract unsigned longs, but I cannot understand what the alternative ...

Question 13

Im reading the voltage applied to my microcontroller using the internal voltage reference. Here the topic is talked, and there are some working examples. Im NOT using this examples, im using my own ...

Question 14

I have an Adafruit ADS1115 analog-to-digital converter, configured in single ended mode. I want to average over 3 sensor readings to increase the reading stability. //initialize variables int16_t ...

Question 15

I am currently working with MPU-6050. Now I want to minus gravity from my accelerometer's value as we minus the offset. Here is the code: #include <Wire.h> #include <MPU6050.h> //read as ...

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Questions tagged [mathematics]

How do I find the whole number (n) that when multiplied by (m) will be closest to (x)? [closed]

Hysteresis and scaling range

On an esp8266 what is faster, 64-bit math or float math?

Is it possible to use mathematical sets and their operations in arduino?

DHT22 sensor reading code interprets negative values weirdly

Math on analog read wrong result

Hexadecimal array does not add up as expected

Arduino FFT results of "beautiful" signal seem inconsistent

Problems in calculating and printing long unsigned integers

Fast random booleans

Calculating Amp/Hrs of a solar panel

How to subtract micros()?

Division with big constant number. Ideas to make it more efficient?

How to get average of 16bit ADC readings?

Remove gravity from accelerometer of MPU-6050

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