Can I use simultaneously 2 Audio Analyzer with Arduino? How do I specify Audio Analyzer 1 or 2? Thanks

No. There are not two OLEDs working in this code byte //U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2a(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ 16, /* data=*/ 17); // ESP32 Thing, HW I2C with pin remapping And you still don't say what your problem is. perhaps if you said what you are trying t…

[image] alto777: int anotherFreqVal[7]; Following your provided directions I was able to build the sketch. The goal is to have a stereo Audio Analyzer. It works, I mean it runs, no syntax or compile errors, still not the desired result. The problem is a wrong loop that I cannot figure out. T…

[image] mikemarcu: have a look at the below code It appears with the attention I can give it my current circumstances that you have carefully and accurately grown the code using copy/paste/edit. Reward yourself with one of whatever is you use to do. But, and this is a proverbially big but - …

The displays I have do not offer any chance to hardware change the I2C address. I bought them from Aliexpress, 2.4 OLED.

OK. So... you'll need to use an I2C multiplexer [image] TCA9548A I2C Multiplexer You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your Arduino when you realize "Uh oh, this chip has a fixed I2C address, and from what I ... Price: …

I know the multiplexer, Texas Instrument chip. At this point I do not know if this will be worth, because I have left only 84 bytes for local variables. Still, for the price, I will give it a try. Thanks,

I followed your recommendation, and I have now running the multiplexer. Still, only one display works, the one connected to output 2, the second display I tried it on output 7, 6, 5, 4, the display is always black. I also tried a second multiplexer. Below is the code. #include <AudioAnalyzer.h> #i…

The display part is solved, one display works on output 2 of the multiplexer and the second display works on out 7. One more problem, the data extracting from the Audio Analyzer v 2.0. the first one on A0 works, the second one on A3 does not work. Here is the code: #include <AudioAnalyzer.h> #inc…

That code is commented out. What do you mean one works and the other doesn't? Make sure you copy/paste/edited correctly. Try swapping the two anaylzers. Try using different analog inputs pins, or test the analog input pins. And so forth. Try to have fun. :expressionless: a7

I think, I did everything, swap the two Audio Analyzers, change the Ax connection and of coarse the code to all from A1 to A7. I might have a code error that I do not see. Here again is the code: #include <AudioAnalyzer.h> #include <Arduino.h> #include "U8g2lib.h" #include <Wire.h> #define MUX_Addr…

Arduino and DF Robot Audio Analyzer v 2.0

Projects General Guidance

mikemarcu May 2, 2025, 9:28pm 29

Is there a way to send a short video, here, to maybe clarify?

Topic		Replies	Views
Audio Analyser Hardware fragen Deutsch	39	709	January 7, 2024
Probleme d'interferences avec mon analyseur de spectre Français	27	218	April 27, 2026
("OLED initialization failed!") Displays	7	87	January 8, 2026
Tengo 3 errores en el audio spectrum analyzer con esp32 Microcontroladores	11	225	February 5, 2025
Projet 07 - Can't play keys simultaneously Starter Kit	17	240	December 26, 2025

Arduino and DF Robot Audio Analyzer v 2.0

Related topics