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Unanswered Questions

405 questions with no upvoted or accepted answers
5 votes
0 answers
903 views

Internet in ESP32 is not working with IPv6

I am using ESP-WROOM-32D in STA mode with Arduino IDE(2.0.5) ESP32 board(2.0.9). I am trying to do http post request with ESP32. Router that provides internet supports only IPv6. Here I am getting ...
4 votes
0 answers
140 views

Arduino IDE v 2.2.1 log file not limited in size (on Ubuntu 23.04)

I was learning/building with a new Arduino Nano ESP32 yesterday and left the Arduino IDE running overnight on Ubuntu 23.04 and it used all the space on my hard drive to write log files which broke my ...
4 votes
0 answers
2k views

Is there a way to use ESP8266 in promiscuous(monitor) mode and see the the wifi packets?

I didn't find much documentation about ESP promiscuous mode (just from the espressif sdk although I'm using ArduinoIDE https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/api-reference/wifi/...
3 votes
0 answers
1k views

How to use C++20 in Arduino IDE?

I'm writing a program for esp32 using the Arduino IDE that needs to count the number of '1' bits in a byte. I found a post elsewhere that says there's a nice function in the standard library to do it: ...
3 votes
0 answers
781 views

How can I connect my ESP32-WROOM-32 to Arduino IDE?

I'm using this 'ESP32-WROOM-32' but I can't find the correct board in the IDE. I see the esp32-wroom-DA (edit, i took it to the store where i bought it and it worked fine with theirs. they were on ...
3 votes
0 answers
191 views

Grove LCD display not working with arduino rev 2 wifi (Unknown error at address 0x3E)

I am trying to connect Grove 16x2 LCD (White on Blue) to my Arduino uno rev 2 wifi. So far, I've tried hd44780 library's ioClass examples, but nothing worked. I've then decided to scan ports and when ...
3 votes
0 answers
5k views

String.format("%i",i) equivalent

How do I format an arduino String when I do not want to print it? I know that one can use printf() or other methods to print a formated string and unfortunately that's all I find with google. But that'...
3 votes
0 answers
957 views

Using CLion as Arduino IDE — Cannot find Libraries

I'm having a problem using CLion as Arduino IDE when integrating 3rd-party libraries: Here is the CMakeList.txt cmake_minimum_required(VERSION 2.8.4) set(CMAKE_TOOLCHAIN_FILE ${CMAKE_SOURCE_DIR}/...
3 votes
0 answers
328 views

Arduino IDE programs Leonardo but cannot open serial terminal

I'm using Arduino: 1.6.7 (Mac OS X 10.11.3), Board: "Arduino Leonardo". When I try to program my code, it works without problems. When I want to open the built-in Serial Monitor or Serial Plotter, ...
3 votes
0 answers
700 views

Serial does not work when LiquidCrystal library is used

I have been struggling with a LCD for 6 hours straight - I've had many problems including random characters showing up, and this time (not quite sure what changed, I tried so many things) as soon as I ...
3 votes
1 answer
1k views

3.5 inch TFT LCD connection diagram with mega r3

Forum post I would like to ask if someone has this shield fully working? My biggest problem is the touch screen that I couldn't manage to make work. Here is the code I am using: // ic: ili9327 #...
3 votes
1 answer
5k views

Running two stepper motors with two rotary encoders

I'm really bad with this coding part of using two rotary encoders to control two stepper motors [using 28BYJ-48 stepper motor with the ULN2003 board]. This code works fine using one rotary encoder for ...
2 votes
0 answers
127 views

What wrong with my Arduino code?

I have a rotary encoder (ppr = 600) and I want to write code to achieve the implementation to read current angle and direction. Here is my code. I think it is correct but it donot have any output on ...
2 votes
0 answers
85 views

Arduino code intermittent

Have an alarm for "tea time", "lunch time" and "tea time". Works well at times but occasionally it gets stuck on the alarm not resetting, other times it does not trigger ...
2 votes
0 answers
197 views

Can't flash my nodemcu esp8266

I wanted to flash my Nodemcu esp8266 v3.4 with esp8266 deauther code: script-github. I did everything said. First I plugged in my nodemcu. Windows detected it and drivers for ch340 where already ...

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