Hello all, When using Bluetooth or WiFi there is clicking noise in the recording. I have tried to install various capacitors on the modules between VCC and GND but no significant improvement was detected. When recording to SD CARD without wireless started, I do not see this kind of issues. I am expe...

I have the same problem, how do you reduce the speed of the SPI frequency? Hello, I was not around for a while, but if it still helps I did it the following way: static sdmmc_host_t host = SDSPI_HOST_DEFAULT(); ... host.max_freq_khz = 10000; ... // Further initialization Additional advice - be sure...

Hello everyone. I have audio samples at 8kHz sample rate and successfully send them to Android phone via Bluetooth SPP. The issue I am facing is non constant send rate - but rather fluctuates from 1KBps to 44KBps and causes for playback to snap. I can solve or minimize this by increasing buffer size...

The reason i mentioned about 5V for this sd card module is because i am using exactly the same module and it was the issue i had with it. I found the same answer on arduino-esp32 github. Im not saying it is/was the issue in your case, but i thought its worth to mention. This module is using AMS1117...

Tell me that you have checked the 3V / 5V comment? That's an easy datasheet check. You can get voltage level issues to 'work' when reducing MHz but you don't/should not use empirical results ahead of something as simple as a datasheet check (I'm not doing that check for you). 41Kbps is stupidly slo...

Try a really, really slow SPI speed. Like 1MHz. This will help show that the issue is not hardware. Thanks! Once I decreased frequency it started working. I get max write speed (1024 to 4096 bytes chunks) at 41KBps. This seams low, any hints on how to improve? This is 5V SD card adapter. It seams t...

Hello! I have created an application for ESP32 that uses I2S to sample built-in ADC and it works great. I use following IIS configuration: i2s_config_t i2s_config = { .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN | I2S_MODE_ADC_BUILT_IN), .sample_rate = sam...

Try a really, really slow SPI speed. Like 1MHz. This will help show that the issue is not hardware. Thanks! Once I decreased frequency it started working. I get max write speed (1024 to 4096 bytes chunks) at 41KBps. This seams low, any hints on how to improve? This is 5V SD card adapter. It seams t...

Hello, I am trying to setup SD CARD on ESP32 DevKit V1 board using esp-idf for some time but without success. When I use Arduino IDE, the card works without issues (SD_Test example sketch). When using esp-idf example sd_card, i get the following error message: I (347) example: Initializing SD card I...