Quite agree with the issue on ADC, I have almost done the project but the ADC reading resolution cannot be ignored. I am about to investigate on esp32-s2 board, anyone who has the development experience know if the ADC is improved or having the same problem?

On the -S2, the ADC doesn't use I2S for DMA anymore, it can do DMA by itself. Unfortunately, we don't really have a nice example to show that off, but you may be able to get some hints from the driver test code in esp-idf at components/driver/test/adc_dma_test . And, will you provide the relevant e...

Thank you for the reply! So that means it can achieve high ADC sampling rate (e.g. 100kHz) without i2s, right?

Hi I have bought ESP32-S2 board and tried its i2s built-in ADC. But it did not work. The error showed "I2S_MODE_ADC_BUILT_IN' was not declared in this scope". So if someone knows that whether ESP32-S2 support i2s built-in ADC? Thanks a lot!

Hi, I am also working on ADS8864 and ESP32 recently, but I found it difficult to find the Arduino Library for ADS8864. Would you mind giving me some information on the library?

Hi all, I have encountered a problem when I use the i2s_ADC mode with high sampling rate (about 60kHz). The board I used is ESP32-DevKitC V4. The problem is that some values may cannot be read by ADC in this mode. There are obvious blank gaps of the measurement signal which should be varied uniforml...