Unanswered Questions
569 questions with no upvoted or accepted answers
5
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0
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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 ...
- 3,126
5
votes
0
answers
361
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SPI between Master arduino and Slave arduino
How can I send the string from Slave SPI to Master SPI?
I want to write code in Bare Metal.
The problem which I am facing is I can't make out what will be my blocking function in Master SPI code when ...
CommunityBot
- 1
4
votes
0
answers
140
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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
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0
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2k
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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/...
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4
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76
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Can I use regular pins (Example: D2, A3, etc...) as serial (RX, TX)?
Python/Arduino Beginner here...
I have a DFplayer I am trying to hook to my Arduino and I want to hook it up through the regular pins instead of the RX and TX pins, but I've not been able to find ...
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3
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0
answers
1k
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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: ...
- 1,595
3
votes
0
answers
782
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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
78
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nano 33 BLE problems with reading RC signal
I'm using an Arduino Nano 33 BLE and a L293D motor driver to control a three-wheeled RC robot. The sketch I'm using worked fine with my Uno Rev3, but I've moved to the Nano for size/weight reasons, ...
- 1,042
3
votes
0
answers
105
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My port is grayed out?
Hello I have a question on why my port is grayed out when I go to upload?
I’ve watched so many YouTube videos on what’s the problem and have been trying to do everything but just nothing seems to work!...
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3
votes
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answers
121
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Keypad - Speaker - Interference
I am trying to build a system, that plays specific audios (.wav files) from a SD-Card, according to the key combination that has been pressed.
I am using:
4x4 Membrane
4 Ohm Speaker
MicroSD Card ...
- 1,795
3
votes
0
answers
713
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Getting atsam3x8e (Arduino Due) to work
I decided to make a pcb based on the atsam3x8e (microcontroller used in Arduino Due). For the design I copied most of the layout that I found on this site and looked at the official Arduino Due ...
3
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0
answers
2k
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How to extract fingerprint template from Arduino Fingerprint Sensor
How to extract fingerprint template from Arduino Fingerprint Sensor and store it to SD card module using adafruit library and then search/import it from SD card module when tapping the fingerprint?
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3
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0
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385
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I want to save the value of the scanned barcode on an SD Card (in a text file may do)
serial monitor output
#include <usbhid.h>
#include <usbhub.h>
#include <hiduniversal.h>
#include <hidboot.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h&...
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3
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0
answers
5k
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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'...
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3
votes
0
answers
220
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Scheduling and BLE Read on demand
I'm building a data logging device with BLE capability using RFduino.
Sensors are read using timer interrupt to a buffer. When the buffer is full, then the whole buffer is written to SD card.
At the ...
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