Recently Active Questions
25,033 questions
2
votes
1
answer
4k
views
Impossible to install the esp_camera library
I cannot install the esp_camera library. When I try to add the .zip, I get "does not contain a valid library.
Everything about this ESP-32 Cam seems to rely on that library, and I can't find a ...
0
votes
1
answer
65
views
esp_now_send takes a non-const uint8 mac address. Why? Does it modify it in some way?
I am using the Arduino IDE to do ESP-NOW communication with an ESP8266.
In espnow.h, on line 53 I find the function prototype:
int esp_now_send(u8 *da, u8 *data, int len);
Why does it take the mac ...
0
votes
1
answer
513
views
Can an Arduino wake from deep sleep exactly on an analog voltage threshold crossing (not a digital interrupt)?
I’m exploring ultra–low-power sensing designs where the Arduino should remain in deep sleep until a specific analog voltage threshold is reached — for example, when a sensor output rises above 1.2 V.
...
0
votes
1
answer
80
views
When I try to debug using Arduino IDE for stm32 using stm32duino nucleo F767ZI throws error
I am trying to debug using Arduino IDE through STM32Duino for my STM32 Nucleo-144 F767ZI. The code is uploaded successfully, but upon pressing debug, I get this error.
Waiting for gdb server to start....
3
votes
1
answer
294
views
Arduino Nano IoT 33 Char Array size constraints
I would like to save data that I am receiving from API calls in a char array. The problem is that the data is around 80 kB, and my Arduino IoT 33 only has 32 kB of memory.
It will save data in a char ...
4
votes
1
answer
299
views
Arduino IDE formatting quirk with nested lists
For an Arduino LED animation project I have been working on an editor tool using HTML and javascript. After setting up various things, the tool enables generating C++ code to paste into an Arduino ...
2
votes
1
answer
227
views
Need help with programing the LCD for my project
I am trying to make a digital die for my project at school. I am having trouble with the programming. I don't really know how to write code and I am not a programmer.
I took inspiration from a post on ...
1
vote
3
answers
2k
views
Lora SX1278 stops receiving after a short time
I am working with two Lora ra-02 sx1278 modules and two Arduino Uno.
Programming on Arduino IDE 2.1.1
sender
receiver
The problem is the receiver receives a few packets successfully, but then the ...
5
votes
3
answers
4k
views
Set EEPROM from PC before program
I have been working on an arduino program, which has gotten rather large. I am close to hitting the 32k limit on Flash for my ATmega328p. I would like lower my program size by saving some of my many ...
0
votes
2
answers
138
views
Difference Between delay() and a while Loop with millis() in Arduino?
What are the practical differences between using delay() versus a while loop with millis() for timing in Arduino projects? I assumed both methods are blocking, but I'm not completely sure.
Example ...
0
votes
1
answer
88
views
How to modify the Leonardo's HID descriptor
I'm trying to make an Arduino Leonardo work with a PS4 following a similar approach as ArduinoXInput with its modified AVR core. However, even though I managed to add the device and configuration ...
0
votes
1
answer
428
views
Connecting microSD reader and e-paper display to Nano at the same time?
Pretty much as the question states, I'm wondering if it's possible to connect (this: https://www.waveshare.com/7.5inch-HD-e-Paper-HAT.htm ) 7.5" e-paper display that has raspberry pi HAT and an ...
1
vote
2
answers
265
views
Which Arduino is compatible for atmega164pa
I am working on a project using 5 pins of ADC, 5 pins for PWM, and LCD. I need to use Atmega164pa. I would like to know how I can transfer it to Arduino. Is there any Arduino compatible with this chip?...
2
votes
1
answer
95
views
Setting the Libraries Path
I am tracking my Arduino project in git, and using git submodules seems an appropriate way to track the libraries used in the project attached to the git repo of the main project.
However, the default ...
2
votes
1
answer
1k
views
Arduino UNO stuck at 'uploading' with base sketch, nothing wired
This question has been asked before and I have carefully read the other questions, but the solutions have not worked in my case, and the details are not the same as mine.
Description
The Arduino Uno ...