Unanswered Questions
91 questions with no upvoted or accepted answers
4
votes
0
answers
56
views
Multiple MuxShield 2's connected to a single Arduino Mega
I am working on a project and need alot of toggle buttons to control various things around the house. I connected 5 MuxShield 2's to my Arduino Mega. The first two will serve as inputs and the last ...
- 61
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: ...
- 1,595
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'...
- 1,868
3
votes
0
answers
1k
views
TRIAC Pulse driver for Spot Welder (help needed with programming)
I have designed and built a transformer driver board for my spot welder. It is powered from mains electricity (230 V) and consists of the following segments: triac drive and protection, zero cross ...
- 31
2
votes
0
answers
176
views
Program crashes when calling external library code via function pointer
I've written a user library for the Pi Pico that uses the TaskScheduler library to abstract timing away from the user. The user provides a function in their sketch which the library calls periodically ...
- 157
2
votes
0
answers
452
views
Same code working on Arduino IDE but not in PlatformIO IDE
I'm running into this weird problem. My code is working just fine when I upload it to an ESP32 from Arduino IDE. That same code is not working when I upload it using PlatformIO IDE. The same libraries ...
- 71
2
votes
0
answers
1k
views
Set acceleration for stepper motor with no ending
I have a problem. I am using a stepper motor with 2 buttons. In my code I am trying to rotate the stepper motor clockwise while holding button1 and counter-clockwise while holding button2. To do that, ...
- 123
2
votes
0
answers
296
views
Using pointer to a Global function
I am trying to store and use a pointer to a global function.
The function global_f returns a String and takes an object as parameter:
String global_f(Request r){
// ...
return "This is it";
}
...
- 21
2
votes
0
answers
640
views
Reading HC05 Output
I am using an Arduino Mega connected with a motion sensor and HC05 bluetooth chip to transmit distance data to a larger computer, process it, and send a data back. Currently, I am having trouble ...
- 135
2
votes
0
answers
95
views
Communication between 2 nRF24l01s and 2 Arduino unos
I am having a logical error that I can not figure out with the communication. I am communicating fine with the two boards such that I can send and receive data. Code to my Transmitter and Receiver. ...
- 21
2
votes
0
answers
867
views
ATtiny Mapping PPM Inputs to Move Servo Issue
Short Version:
Not able to get a servo to move to mapped input from RC remote control PPM signal.
Detailed Verison:
I am trying to take an input signal from a hobby RC radio (D4RII receiver ppm ...
CommunityBot
- 1
2
votes
0
answers
3k
views
Read string from DigiUSB
I wrote simple code for my Digispark (Attiny85 with Micronucleus bootloader) in Arduino IDE:
#include <DigiUSB.h>
String inst;
void setup() {
DigiUSB.begin();
pinMode(1, OUTPUT);
}
void ...
2
votes
0
answers
113
views
High rate of transmission errors (~50%) using Xbee Radio
I am using a two Arduino setup with two XBee radios. One radio is sending data and the other is receiving data. I am sending three sensor readings following a protocol which uses three bytes for each ...
- 2,522
2
votes
0
answers
106
views
Arduino toggles on multiplexer not working
I am currently working on an Arduino project that needs alot of on/off toggles. Because my Arduino Mega does not have enough pins I connected 5 multiplexers to it (the MuxShield 2's). The problem is ...
- 61
2
votes
0
answers
98
views
Arduino Leonardo based h keyboard
I just want to configure my laptops keyboard buttons a,s,d,f,g,h and j. I wrote this code and it works for only a but I couldn't configure other buttons.
Code is:
#include "Keyboard.h"
const int ...
- 2,522