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Thanks for your interest! My projects only publish in my youtube channel.

Just upload my wireless version with codes, welcome to visit, thanks! th-cam.com/video/2dzP8FL5gOA/w-d-xo.html

If you have a receiver paired with the drone controller, try to read the PWM signals by using Arduino or ESP32

@@shufunlee6628 thank you.

Here is the reading loop: void readADXL345() { startTime = millis(); for (ii=0; ii<=4095; ii++) { if (accel.update()) { accX[ii] = accel.getX(); accY[ii] = accel.getY(); accZ[ii] = accel.getZ(); } else { Serial.println("update failed"); while(1) { delay(100); } } } endTime = millis(); timeTaken = abs (endTime - startTime); timeTaken = timeTaken / 1000; Serial.print("Time Taking ..."); Serial.println(startTime); Serial.println(endTime); Serial.println(timeTaken,4); } Simply write the arrays accX, accY and accZ to SD as text file, then read from computer.

Welcome to take a look of th-cam.com/video/-lInwkwVQdM/w-d-xo.htmlsi=p4gJDc84jwyXqLpk which calculates FFT in the ESP32

This project just take raw data, FFT is done by using KST This project, th-cam.com/video/-lInwkwVQdM/w-d-xo.html uses FFT library

Hello! I made a filenum.txt to hold the data filename. Press the record button will update the content. If the filenum.txt does not exist, the file will be created and the data file number will be reset to 1.

@@shufunlee6628 thank you

@@shufunlee6628 Which library did you use sdFat or just SD?

@@shufunlee6628Do you first save data from the accelerometer to the memory of themicontroller as an array then in sd or is it directly written to the sd card? Do you use arrays? Do you use eeprom to save these menu variables?

@@Ар-к8х Hello! Yes, accX[4096], accY[4096] and accZ[4096] array were assigned. The SD library is mySD.h

Number of samples must be 2 to the power x, 2048 samples was used in the video, sampling rate is the data taken loop of the mcu, around 2.8kHz in my test. Other parameters are using default values of KST.

@@shufunlee6628 thanks buddy

Thanks, don’t know how to attach pictures here. All components are shown in the video.

Since the input/output of L298N is not linear, and there is a gear box for a dc motor, backlash should be a problem. Flysky is ok that PWM signal is taken.

Yes, this is a project. Please google "remotexy", the app is for both ios and android.

@@shufunlee6628 Yes thanks I found it. And the firmware for the ESP?

At the end of the clip, a reference was shown. I learned from there.

Set the I2C Clock to 400kHz by using : Wire.setClock(400000); I use the loop to read sensor data: startTime = millis(); for (ii=0; ii<samples; ii++) { if (accel.update()) { accX[ii] = accel.getX(); accY[ii] = accel.getY(); accZ[ii] = accel.getZ(); } else { Serial.println("update failed"); while(1) { delay(100); } } } endTime = millis();

That size is easy be found in Hong Kong

Did you succeed?

Hello! Calculations are in the encoder unit, just absolute values are sent thru' bluetooth. For my application, shows correct readings up to 800 mpm.

HelIo! I bought from here: item.taobao.com/item.htm?spm=a1z09.2.0.0.53c92e8dkVyOnC&id=562525738294&_u=4b7ujoaa4da

@@shufunlee6628 do you have plan to commercialize your work? if you do can i get your contact? thanks

@@fichriza Yes, my contact is fun@hkstar.com

Hello! Please google Tamiya Educational Construction Series.

www.techcoil.com/blog/how-to-use-a-esp32-development-board-to-read-from-an-adxl345-accelerometer/ randomnerdtutorials.com/esp32-ssd1306-oled-display-arduino-ide/ Just four connecting points, OLED and ADXL345 are connected parallel to ESP32

Thank you so much. you are such a lovely person.

Take a look at the M5Stack library

Thanks for your opinion! I already mentioned where the circuit and program came from, you may take a look my other clips. As a mechanical student, even I am sixty, I enjoy the unstable status. Imperfect is perfect!

@@shufunlee6628 no judgement, your pleasures are inestimable from here. having a background in audio dsp (usually 1 dimensional) i tend to look at things in mechanistic ways that aren't always apparent to people who engage in practices already established in more complexity :) but if you do want to investigate more about editing PID values, people who make drones are a good place to start, their PIDs have to be very close, and they have some articles on how to proceed with them.

Hello! Yes, the robot can be controlled by apps. The timing of the control PID loop is critical that an additional ESP32 is employed for remote control purposes.