Questions tagged [calibration]

Use this tag with regard to ensuring that instruments are giving accurate readings as compared to a trusted reference standard.

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Why do I get error “Error compiling for board Arduino Uno” with my mpu6050 video stabilization code?

This is the code I'm working with. I'm using it for video stabilization system. It was working fine but for some reason now it gives me this error? Is it because I deleted the library and installed ...
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Why do I keep getting “class MPU6050 has no member named 'CalibrateAccel'” error in the MPU6050 example IMU_Zero when trying to upload?

// MPU6050 offset-finder, based on Jeff Rowberg's MPU6050_RAW // 2016-10-19 by Robert R. Fenichel (bob@fenichel.net) // I2C device class (I2Cdev) demonstration Arduino sketch for MPU6050 class // 10/...
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LSM303 unable to compensate tilt

I am working on a tilt compensated compass with the LSM303DLHC. I manage to calibrate the magnetic and accelero part. I managed to calculate pitch and roll. But when it comes to calculate tilt ...
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How to calibrate Arduino DUE analog readings?

I am having a problem with the analog readings on my Due. On pin A4 and A5 I am measuring voltages: double vcc = 3.288 // taken on pin 75 (ADVREF) ; analogReadResolution(12); result = analogRead(A4) ...
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Do we have to calibrate LDR before using it in a project?

I am doing a project with Arduino, making a synthesizer, in which an LDR is used. Before connecting the Arduino to a power source and use the project, do I need to calibrate the LDR like it is ...
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204 views

How to calibrate MPU 6050 thermometer?

I'm using MPU 6050 and there's a thermometer onboard. However, I looked through the chip set data sheets but could not find the instruction for temperature sensing. Could you tell me how to calibrate ...
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1k views

QMC5883L automatic calibration

I have a QMC5883L magnetometer, and a pretty basic sketch which just prints the values from X, Y and Z axis to the serial monitor. I want to use it in an application to detect changes in the ...
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1answer
557 views

Ultrasonic sensor underwater calibration

Does anyone knows how to calibrate AJ-SR04M using the Arduino? I am working on AUV. underwater reading from current code; it is giving continuous 20cm while moving inches. http://shop2.hanjindata1....
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26 views

Arduino loop over a function is always displaying 0 as final values

I trying to loop over a function in arduino to get values for 2000 times, and then divide it by 2000 to get an average offset: int16_t x_offset = 0; int16_t y_offset = 0; int16_t z_offset = 0; And ...
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361 views

How to filter or eliminate earths magnetic field readings around 3D Magnetic sensor?

Im using the SparkFun MAG3110 3D sensor: https://www.sparkfun.com/products/12670 My application is essentially to make a contactless "magnetic joystick" using a local magnet for accurate and constant ...
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1answer
5k views

MQ135 Gas Sensor Calibration [closed]

I have bought a MQ135 gas sensor. I have read online from multiple sources that a calibration/warm-up period of between 12-24hrs is required for the sensor to give its most accurate readings. I ...
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HC-SR04 calibration conditions

As is known, the speed of sound depends of temperature and Relative Humidity. I'm trying to calibrate HC-SR04 sensor taking account these factors. In SparkFun page there is no mention about ...
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975 views

Problems with ACS758 Hall Effect Current Sensors - Calibration and no Signal

I purchased 3 ACS758 Hall Effect Current Sensors datasheet on ebay. A 50,100 and 200A, all three are bi-directional. They look like this. With no current the 50A outputs 477 on the analogue input (2....
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1k views

Can't get constant reading with load cells

I'm really a newcomer to arduino and I'm trying to build a scale with four SEN-10245 load cells and a HX711. My issue is that I can't get constant readings in the serial monitor and I'm not sure if my ...
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How can I seriously calibrate ADC voltage readings with Arduino Nano?

I have been using Arduino Nano Analog input to measure voltages, in the range between 22-30 Volts. I want to measure it down to a tenth of a volt. Following the instructions found here: Read ...