All Questions
24,746
questions
-1
votes
0
answers
5
views
Arduino Micro Wrong Output
So I am just trying to make a very simple code that will open cmd, make the color green and then run dir/s to make it look like it is doing something.It is a basic school project.
But for some reason ...
- 43.1k
1
vote
2
answers
38
views
Confusing Pinouts on MH-ET ATTiny88
I am a little bewildered about the analog pins on the Arduino ATTiny88.
First of all, am I correct in thinking the functions analogRead() and analogWrite() can use either the string A0 - A7 or a ...
- 2,959
-2
votes
0
answers
16
views
Have I bricked my Arduino Uno? Only the TX and ON lights are on and the rest doesn't work [closed]
I saw a video on the Internet where someone had taken out the ATmega328-PU from the UNO R3 board and used it independently.
When I did the same thing it didn't work and when I tried using the same ...
- 1,515
-1
votes
1
answer
26
views
Whats the MPPZ 3610 on Arduino nano every [closed]
I'm curious what's the MPPZ chip on my Arduino nano everu
- 18.1k
1
vote
1
answer
71
views
Fubarino (microchip pic32mx), Second timer interrupt is not firing
volatile uint32_t counter_timer = 0;
void __USER_ISR myISR() {
counter_timer++;
clearIntFlag(_TIMER_3_IRQ);
}
void __USER_ISR myISR_timer_four() {
clearIntFlag(_TIMER_4_IRQ);
TMR4 = ...
CommunityBot
- 1
1
vote
0
answers
8
views
Arduino ESP32-S3 MSC FW+Files
I want both, a Config file on the MSC and also FW Update via USB.
Right now I can choose on a Hold Button which should be done.
But it shows always two Drives instead of one.
One Drive is empty and ...
- 11
-1
votes
0
answers
12
views
Help with object counter
I'm pretty new to all this. So, here's what I'm trying to do: I want to count how many pieces fall into a box using an IR sensor (vester pmi-20-20/p). Once a certain number is reached, I want to ...
- 1
0
votes
0
answers
11
views
Unable to play audio on ESP32 speaker that receives audio from phone via Bluetooth
I have the following code that I am using to receive audio from phone via Bluetooth Classic and sending it to the internal DAC of the ESP32 which is connected to headphones. When I run this code on ...
0
votes
1
answer
24
views
Arduino Nano RP2040 Connect / Nano ESP32 does not work with Nano Ethernet ENC28J60 shield
I modified a Robotdyn ENC28J60 shield for a 3.3 V Nano by removing the logic level conversion IC and bridging its contacts (2-3 for INT and 5-6 for MISO).
But the Nano RP2040 doesn’t start the sketch ...
- 18.1k
2
votes
2
answers
5k
views
Arduino UNO and RS485 Communication Problem
I am learning Arduino, a beginner in programming. I want to use Arduino UNO to connect a wind direction sensor RS485. The problem is the output in the serial monitor, the return data from the wind ...
- 1,381
-2
votes
0
answers
19
views
Query regarding millisecond delay [closed]
In Arduino code, i am putting 10 millisecond delay. instead of 10 millisecond gap, i am getting data in serial monitor for every 30 milliseconds. what is the solution.
5
votes
5
answers
5k
views
Arduino PRO Mini - The pads [was "jumpers"] on the back and Low Power Consumption
I've noticed that on the back of an Arduino PRO mini are two Jumpers next to the A4 and A5 pins, marked with red in the following :
Looking at the leads one seems to be a bypass for the POWER Led and ...
-1
votes
0
answers
58
views
Controlling DC motors through one single push of a button [closed]
My goal is to write code where when a button is pushed once, the code starts and finishes its cycle (without holding down the button and no click to finish the code).
I'm using an Adafruit V1 motor ...
-1
votes
0
answers
22
views
How to upload code in ESP32 - S2?
I am using ESP32-S2-SOLO development module. I just put a simple code to upload. This is my code,
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println("...
1
vote
0
answers
71
views
Issue with multiple RC522s connected to Arduino Uno
THIS IS NOT A DUPLICATE QUESTION. My main problem is that whenever I
attach the third RC522, the whole system becomes unstable. When I
attach the fourth, suddenly one or two of the modules stop ...
- 18.1k
0
votes
1
answer
52
views
Can you correct my code that works for Arduino-based incubator?
My brother and I are making an Arduino-based incubator by watching YouTube videos and we've got in stuck. The code was taken from a video and it doesn't work and gives errors with the DHT11 sensor ...
0
votes
0
answers
21
views
Error connection to ESP8266 NodeMCU ESP 12-e
I'm having a problem getting the Arduino IDE to connect to this board:
I added the URL for the board manager in preferences:
Added the board in the board manager:
Selected the proper comport (COM4) ...
- 101
0
votes
0
answers
25
views
Transmitting data wirelessly using HC-12
I'm currently working on a project that involves two stations: a transmitter and a receiver. Please keep in mind that I'm a beginner.
On the transmitter side, I'm using an ESP32, HC-12 433MHz module, ...
- 1
-2
votes
0
answers
59
views
Help me with my GPS tracker
I just added an HMC5883L magnetometer to my GPS.
The magnetometer reading is not changing when I am rotating it. It is initially wrong as well.
Just a detail: the magnetometer is already on a ...
- 1,775
0
votes
0
answers
770
views
My NodeMCU ESP8266 is heating up and the on-board LED of GPIO16 is ON continuously [closed]
How it happened
Recently I was working on a device with Blynk application in which my device will burn crackers using Blynk. I wanted to create a safe environment for burning crackers.
There was a ...
- 1,775
0
votes
0
answers
24
views
Keypad library isn't working or I am wrong somewhere
I am using PICSimLab to simulate a keypad. The configuration of the keypad is as shown in the picture:
and the code is:
#include <LiquidCrystal.h>
#include <Key.h>
#include <Keypad.h&...
- 1,775
0
votes
0
answers
34
views
MP3 player buttons not working
I wanted to create an MP3 player using DFPlayer but because DFPlayer was not available in my area I bought FN-M16P to create the player.
The buttons are not working.
I used this code when I tried to ...
- 1,775
0
votes
0
answers
22
views
What are the limits of Arduino MEGA2560 R2 and R3 compatibility? [closed]
I have an Arduino MEGA2560 R2. It has a program on it that we do not have the source to but want to clone onto another board to troubleshoot certain issues. I have been able to retrieve a hex file ...
- 1
0
votes
0
answers
21
views
How to store a structure of 200 bytes into a external EEPROM? [closed]
I am trying to store accounts into External EEPROM. The struct has 200 bytes but i have read that you can only store 32 bytes at one time. So how do I store a structure of 200 bytes. Is there a ...
- 1,515
0
votes
1
answer
51
views
1602 16×2 LCD display is not lighting up for my Automatic watering system project
I'm working on a project to create an automatic watering system using an Arduino Uno R3 board, a 16x2 LCD display, a water pump, and a soil moisture sensor. However, I've hit a roadblock and could ...
- 2,959
2
votes
1
answer
95
views
Why does my Arduino stop uploading to the Thingspeak server after several hours?
I'm using a Maduino Zero 4G SIM7600 device to upload data from 28 sensors to a ThingSpeak IoT server. It works well for a few hours, then stops uploading the data. Sometimes it starts again after an ...
CommunityBot
- 1
0
votes
1
answer
34
views
Arduino Pin Issues [closed]
This is some very simple code I wrote for pin 4 to toggle between on and off every second. However, when I test it, (LED connected to pin 4 and ground), The LED outputs a constant dim glow. This ...
- 38.2k
1
vote
2
answers
235
views
Elechouse MP3 shield play random song
Using this code to try and play a random song when someone walks by my distance sensor I get an error, the same song (track 0001) plays every time. Any advice?
#include <SoftwareSerial.h>
...
CommunityBot
- 1
1
vote
0
answers
26
views
Chrome-sandbox error in Arduino IDE 2.3 in Ubuntu 24.04
I'm trying to setup an installation of the IDE 2.3 in a Ubuntu 24.04 LTS (beta) environment, and am facing an issue I'm unable to resolve. The IDE gets to the GUI for accepting terms and conditions, ...
- 113
0
votes
0
answers
17
views
problem in sending values from a web browser to a webserver esp8266 by post method [closed]
I have written an html code and saved it in a esp8266 as a webserver. in my code there is a form in which the browser must send some datas by post method to the webserver. unfortunately when i read ...
- 1,515
0
votes
0
answers
17
views
How to send a binary file to a Nano board through an ISP connection using Arduino CLI?
I need to send a .bin File for it to be consumed by InternalStorage from Arduino OTA library. I tried to use Arduino CLIs upload command like arduino-cli upload -i new_version.ino.bin -p AVRISP mkII -...
2
votes
2
answers
384
views
Arduino Digispark ATtiny85 conditional logic not working
Expected Behavior:
I am attempting to use && or nested if statements to achieve the effect of two switches being required to close prior to an LED light (i.e., flip both switches), the LED ...
- 51
2
votes
0
answers
2k
views
How do I interface my ESP32 board with my 3.5" TFT Screen
I've bought an ESP32 board from here and a 3.5" TFT Screen from here. The ESP32 board has an UNO type layout so I thought it would work with the screen which is designed to plug in and play with ...
2
votes
3
answers
8k
views
formatting of IPAddress via printf(...) family similar to Serial Object
I am trying to use an sprintf with an IPAddress and I am not sure why Serial.print() is able to convert IPAddress to a reasonable human readable representation. I mean, presumably it uses an ...
- 43.1k
1
vote
1
answer
262
views
Arduino Nano: MAX30102 and memory problems
We are making a simple pulse oximeter device with an Arduino Nano and a MAX30102 sensor.
The problem is the SpO2 reading and processing algorithm of the MAX30102 library literally does signal ...
CommunityBot
- 1
-1
votes
0
answers
18
views
TLC 5917 LED Driver [closed]
I need to use a TLC5917 LED Driver to run 6 LEDs at a steady current. I have looked at an endless number of posts both here and all over the place, but I can't figure out how to hook this thing up to ...
- 1
0
votes
2
answers
946
views
Does SoftwareSerial and the servo library produce interrupt conflicts?
I'm planning a project that will involve multiple serial ports and the Arduino servo library. I have heard that this may cause interrupt conflicts. Are there any simple solutions to this
-1
votes
0
answers
18
views
ESP8266 post data from MQTT using Node.js
I'm trying to capture my voice using the KY-038 module wired to the A0 pin on the WeMos D1 mini and send it to a javascript file for conversion to wave file format (WAV) so I can play and listen to it ...
- 1,515
0
votes
1
answer
428
views
I am attempting to control two stepper motors by using serial input. My code works, however I have to press the new directional command multiple times
I am using two 28BYJ-48 stepper motors with two motor drivers that they come with. (I don't know the name of them.)
Here is my code:
/*
* Code to control two stepper motors simultaneously using the ...
CommunityBot
- 1
2
votes
1
answer
75
views
Uneven stepper motor acceleration / code execution
I have created a library to control a stepper motor. I have a controller that accepts a pull signal, and then executes a step, so my code needs to generate a state change in order to make the ...
- 43.1k
0
votes
0
answers
17
views
IMU (MPU-9256) is not working with ESP32 and Arduino Mega
I have been trying to get roll, pitch and yaw data from my MPU-9265 IMU. After trying multiple libraries and changing hardware like wires and ESP32s I was not even able to get a raw readings from my ...
- 1,775
-1
votes
0
answers
11
views
HM-10 Doesn't show on COM port - MacOS [closed]
I'm trying to communicate with a HM-10 over bluetooth, however, when I connect to the device using the third-party app ''LightBlue', I can't see any COM port open for the bluetooth connection when I ...
- 1
1
vote
1
answer
173
views
Using MFRC522 along with other inputs (Bluetooth, keypad)
I'm making a little parking lot, which includes mostly opening a servo motor using either keypad, Bluetooth (hc-05) and freshly added, RFID (RC522).
I can't get inputs from other sources if I want to ...
CommunityBot
- 1
2
votes
3
answers
725
views
240*320 transparent OLED display with Arduino
A long time ago I ordered this transparent OLED display (from a chinese supplier on alibaba) planning on interfacing it with an Arduino but didn't really have the skills to get the project going.
I ...
2
votes
1
answer
3k
views
OSX upload error: avrdude: ser_open(): can't open device "/dev/cu.mydev" : Resource Busy
I'm trying to upload the blink script to my unnamed Arduino-like board. However, the USB port appears to be busy.
This is all the output I get:
Archiving built core (caching) in: /var/folders/43/...
- 1
0
votes
0
answers
30
views
LGT8f328P programming and configuration issues
I am using 40 pin "CNEWTEC BAITE" LGT8F328P processor, LQFP48 Mini EVB modules.
These have a 3V3 regulator and 16 MHz crystal.
They have no USB interface and I am using an FTDI USB to serial ...
- 2,421
-1
votes
0
answers
35
views
I'm trying to make a dynamically lit staircase, but it doesn't work as it should [closed]
The code dosen't work as it should , if i triger only one part for exemple If i triger A5 its should triger the relays from top to botom intead If i triger A5 or any other pin its gona start execute ...
- 1
0
votes
0
answers
30
views
ESP32-C3 - Low Power mode question and suggestion request
I currently have a project I'm working on where I am using the Seeed Studio Xiao ESP32-C3 https://wiki.seeedstudio.com/XIAO_ESP32C3_Getting_Started/
https://www.seeedstudio.com/Seeed-XIAO-ESP32C3-p-...
- 18.1k
0
votes
0
answers
19
views
Problem flashing Arduino Uno [closed]
I'm using an Arduino Uno to control some 12vdc motors and I think i may have burned my Arduino. When removing the hardware from the chip, I accidentaly touched some ICSP pin with 12vdc, the board ...
0
votes
1
answer
40
views
Arduino Nano ESD crash despite ESD protection measures
Good day!
I've just ran into a problem with a project of mine that I can't really figure out myself anymore. So i'm hoping someone on here will be able to help...
First things first, I'm trying to ...
- 29