my question is why you want to amplify that signal if ADC is so sensitive and works with voltages like 1.1V ?

That PH meter - the value changes\steps up every 59.16mV so question is if ESP's analog reading has resolution of reading such voltage value granularity - e.g 59.19mv resolution. Maybe it is possible to set up the gpio pin to accept a voltage range of PH values (+-0.41212+bias) mapped to pin readout...

After reading a documentation I am still a little confused about SPI My questions: Are there any differences between HSPI and VSPI ? What is maximum speed of SPI? What happens if different pins are used than native pins? Also very important - how bits are stored in bytes - particularly in rx_data bu...

I actually need help with reading MAX31855 Here is SPI code that works but readings are a bit off. What am I doing wrong? #include <stdio.h> #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "soc/gpio_struct.h" #include "driver/gpio.h" #include "driver/spi_common.h" #include "driver...

Then your settings are missing something. Probably larger buffers must be allocated certain way with certain malloc

Without seeing more details of error output, etc then it's hard to tell what this means. However, one thing to note is that the convert_to_cmake.py tools assumes that you have the "old" build system (it uses "make" from the old build system to parse the project). So this might be the reason for any...

Anyways - that's what I observed - there is already a memory data to be read in form of uint8_t rx_data[4]
I am not sure if it is DMA related

Also check my post

https://esp32.com/viewtopic.php?f=17&t=5787

I was testing RMT and it turned out to be excellent tool ) Here is a code for ultrasonic sensor HC-SR04 using full hardware capabilities of ESP hardware Remote Control module [code] #include <stdio.h> #include <string.h> #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "freertos/qu...

Anyways - I looked a bit through CMake documentation and example projects that have complex CMake components. So I managed to convert the TFT library myself and it worked without problems) Compilation is faster than Arduino IDE! Commands like idf.py -p COM3 flash monitor are great tools ! Note that ...