All Questions
23,999
questions
-1
votes
0
answers
11
views
problem with a push button in an arduino project
I'm making this project:https://www.instructables.com/Model-Rocket-Flight-Computer-With-Arduino/
After building this on a breadboard, I've noticed a problem.
When I press the button, the computer ...
0
votes
1
answer
20
views
Camless Engine Project
I'm trying to run a camless engine and I need to track the angular position of the crankshaft of the engine. For that I have a wheel with 30 magnets attached to the crankshaft so that when the wheel ...
0
votes
0
answers
4
views
How to power LILYGO ESP32-S3 1.9" T-Display without USB?
I have one of these little LILYGO ESP32-S3 1.9" T-Display boards. Linked up with my PC, downloaded my code, runs fine, but I can't get the thing to power up from the 5v rail, or through a 5v ...
- 1
0
votes
1
answer
14
views
Tools > Board settings: how are they captured?
In the Arduino IDE, the Tools menu can be used to make some board-specific settings like this:
... such as Processor Version = "Atmega168P", Processor Speed = "16MHz Crystal Resonator&...
- 326
0
votes
0
answers
16
views
Why is my analog output limited to 2.7V?
I have an MKR1000 with a "real" analog output pin (DAC0/A0/PIN15). According to the documentation, this is a 10 bit DAC, so I assume I can write analogWrite(15, 1024) to have an output of 3....
- 145
0
votes
0
answers
9
views
Grove OLED library not active due to Tetrix prizm library interference
Hardware:
Pitsco Tetrix Prizm
https://www.pitsco.com/TETRIX-PRIZM-Robotics-Controller
Pitsco Tetrix Teleop
https://www.pitsco.com/TETRIX-Tele-Op-Control-Module
12 V battery
https://www.pitsco.com/...
0
votes
0
answers
9
views
MAX30102 Sensor not sending data to thingsboard
I'm having trouble with this I'm not sure if it's a code issue or a hardware issue, I am using a ESP32 and the sensors MAX3012, MPU6050 and a MLX90614. The issue I'm having is that when sending data ...
- 1
-1
votes
0
answers
33
views
How do you know if it is possible to control some electric device with an arduino?
How do you know if it is possible to control some electric device with an arduino?
More specifically, is it possible to control this "electric hoist with remote control" with an arduino?
...
0
votes
0
answers
15
views
Problems using HC-SR04 with LED displays
I'm having problems using an HC-SR04 ultrasonic sensor in conjunction with an LED display module. The sensor appears to work fine when outputting values to the serial monitor, measuring distances up ...
- 101
-1
votes
0
answers
12
views
Serial Flash W25Q32BV versus W25Q32FV
I need to replace a Winbond serial flash W25Q32BV (series B). I've noticed there are other different types of this same flash, W25Q32FV (series F) and W25Q32JV (series J). I haven't been able to find ...
- 41
0
votes
0
answers
14
views
Arduino Nano not working with Arducam Mini 2MP Plus
I am trying to connect an ArduCAM Mini 2MP Plus to my Arduino Nano. I have used the camera module with my Arduino Uno, so I know that camera works. However, it does not work with my Nano. When I use ...
-1
votes
0
answers
10
views
Trying to use USSD command on A9G GSM module
I am trying to execute USSD command using A9G GSM module.
AT+CMGF=1
AT+CSCS="GSM"
AT+CUSD=1,"*222#",15
and I get this not readable result
`ôÑ®‹Žà;òxÿœ‹€ùÄ: šÿ½{DàBï¶ÿÐ;Þ¡þÓ+þ‚KÎ Ò‚...
- 1
1
vote
0
answers
15
views
Megaboard Problems about pySerial Communication from Python to Arduino
I asked same question on another forum, but i need more opinions and advices.
I wrote a simple Python code and Arduino code.
In my code, the Excel matrix data is loaded into Python,
then converted ...
- 11
0
votes
0
answers
27
views
controlling a ho tram using minnis timer
I want to code the nano to run a dc motor until it reaches my planned passenger stops. I have no trouble coding the nano to start the motor using a latched reed switch. my problem is finding the ...
- 11
0
votes
0
answers
13
views
AREF calibration on MEGA board: Calling analogReference() causes instability in sensor readings
So I'm a bit at a loss. I'm trying to set up a suite of environmental sensors to run off of the breadboard, and input analog data to my Mega. I have a potentiometer hooked up to the 5v and ground pins ...
- 1
0
votes
0
answers
22
views
Esp-now reacting like bloating in Many-to-one setup
I have project which 3 esp01 controller and 1 nodemcu 12-E receiver which gives scores.
Trying to read all input freely from controllers but when i use 3 at same time or pressing button too quickly ...
- 1
-1
votes
0
answers
21
views
esp-01s connected to arduino does not respond to AT commands
I connected esp-01s to arduino uno with adapter like this:
I connected it to arduino like this:
adapter VCC --> adruino 5V
adapter GND --> adruino GND
adapter TX --> adruino TX
adapter RX --&...
- 1
-1
votes
0
answers
13
views
Can't upload arduino-ci file as a library into Arduino
I've been working on getting a DHT-20 sensor to print values and become compatible with other sensors on for a project. I've been trying to get https://github.com/RobTillaart/DHT20 to work properly, ...
- 1
1
vote
1
answer
30
views
Arduino + HC-05 Problem: AT Commands are not working
Device: Laptop, HC-05, Resistor 2.2k and 4.7k, Arduino Uno R3
So im trying to rename and change password of my HC-05. for full detail schematic diagram. Here(the difference is, i also used the STATE ...
- 81
1
vote
0
answers
28
views
Need help figuring out how to organise a system to run a stepper motor at low speed without Steps-skipping
TL;DR : How to prevent step-skipping with a NEMA gearbox motor at low speed.
I am in the process of creating a system in which I want an object to turn on a plate and to show a letter depending on the ...
-2
votes
0
answers
35
views
How to send sensor data to Live streaming graph using HC 05? [closed]
Is there any easiest way or software inbuild in to play store to get live data as serial plotter. Please integrate or modify the code accordingly....
-#include <SoftwareSerial.h>
SoftwareSerial ...
- 1
-2
votes
2
answers
63
views
Error coming from specified code
Error
Arduino: 1.8.19 (Windows 10), Board: "Arduino Uno"
AnalogInOutSerial:8:56: error: no matching function for call to 'PID::PID(int*, int*, double*, double&, double&, double&,...
- 1
-3
votes
0
answers
17
views
How to properly measure a 200A/5A CT using Arduino? [migrated]
Hello I've seen multiple projects for energy monitoring explaining how to calculate values using a CT however all the CT that was mentioned were the ones with high turn ratios.
The CT available to me ...
- 95
0
votes
0
answers
34
views
Blink without delay as a class [closed]
I wrote a sketch which makes an LED blink 5 times without using delay() and it works as intended:
#define LED_pin 3
int blink_count = 0;
const unsigned long blink_interval = 250;
unsigned long ...
-1
votes
0
answers
24
views
Arduino Nano NTC thermistor, wrong readings
I have problem with readings from NTC thermistor. It shows -10C in my room. Im using 10k resistor and this thermistor
I was following this Project but instead of little NTC Thermistor i used Oil ...
0
votes
0
answers
19
views
ESP32 Async Web Server hanging / queue
I was hoping someone might be able to help me with a project I'm working on. The general set-up is as follows:
I have an ESP32 hosting a WiFi server and publishing data from a bunch of sensors.
// ...
1
vote
2
answers
44
views
Arduino MEGA - How to send and receive data asynchronously?
i am newbie to this so i hope i can explain my problem clearly;
Arduino MEGA connected to PC via USB port.
I am using an encoder to trigger function to send data to pc, data is a simple string "...
- 13
-1
votes
1
answer
60
views
Serial port stops receiving data after random amount of time
EDIT: Things I have tried so far:
Increasing the baud rate, but this didn't make any difference as it still continued to stop receiving data after random amount of time.
I tried testing one sensor ...
- 11
-2
votes
0
answers
13
views
How to search for joystick module which does not re-center
I searched for an arduino thumb joystick module to buy. I found lots of similar-looking 2-axes joysticks but from what I see they all have springs which re-center the joystick.
I'm looking for one ...
- 97
-1
votes
0
answers
78
views
Trying to get I2S to output bell sound from ESP32 to earbuds, just get buzzing sound; is there something wrong with my Arduino program?
Hardware
https://www.mouser.com/ProductDetail/Espressif-Systems/ESP32-DevKitC-32D
ESP32 integrates two I2S controllers, referred to as I2S0 and I2S1,
both of which can be used for streaming audio ...
- 163
-1
votes
1
answer
67
views
What is the difference between ":i" and ":a" in avrdude command?
What is the difference between :i and :a after my hex file path in avrdude command.
avrdude -C C:\Users\santi\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf -v ...
- 29
2
votes
1
answer
24
views
Unable to flash arduino pro micro from Terminal
I am trying to upload an hex file to my arduino pro micro using Avrdude . The thing is that I cannot upload any code using the Avrdude terminal commands , but when I use arduino IDE to upload any code ...
- 29
-1
votes
0
answers
12
views
Connecting Ir camera from waveshare with pybadge adafruit board
I bought an IR MLX90640 from waveshare and a board from adafruit. Which library should I download on Arduino? Because for now, the board does not recognize the camera.
Thanks
1
vote
0
answers
79
views
Arduino Nano BLE 33 Sense receives but not able to transmit data to XBEE Pro S2C
This is my first time asking a question so I will try my best to be precise and detailed.
I had recently started to work on a project that requires me to establish a wireless communication between two ...
- 11
-1
votes
1
answer
29
views
Arduino 3.3v pro mini, most efficient use of AA batteries for power
I want to use a 3.3V pro mini that uses a BME 280 to take temp/pressure/humidity, and nRF24L01 module to transmit the data, at ?10 minute intervals. I want to use 1, 2,3 or 4 AA batteries to power it....
- 13
-1
votes
1
answer
23
views
How to pass Strem object to my class
I'm trying to creaper class wraper to use an Streamobject but I've an error when I try to compile.
My .hfile :
#include <Arduino.h>
class TestSerialListener {
public:
TestSerialListener(...
- 133
-2
votes
0
answers
31
views
Hard Resetting Via RTS pin [closed]
so im using a Wemos D1 R2 board, and every time I run my project, it says:
Leaving...
Hard resetting via RTS pin...
and then stops
and here is my code:
// put your setup code here, to run once:
...
-1
votes
1
answer
66
views
I don't understand what's wrong with this code
int ledy = 5 ;
int leds = 4 ;
int ledk = 3;
int button = 2 ;
int count = 0 ;
void setup()
{
pinMode(ledy, OUTPUT);
pinMode(leds, OUTPUT);
pinMode(ledk, OUTPUT);
pinMode(button,INPUT);
...
- 3
-1
votes
0
answers
19
views
How do I tweet an Arduino reading in the field?
I am making a "Flood monitoring system" using Arduino and some sensors. I will be leaving the device in the field. Is there a way to get an alert using a tweet from the device when a ...
- 11
0
votes
0
answers
22
views
How to run a BLDC with nano? Not running, no arming sound
I'm trying to control my BLDC with my Arduino and ESC. To me, it seemed pretty straightforward. But for some reason, it's not working. Here is my code:
#include <Servo.h>
Servo esc;
void setup(...
- 137
-1
votes
1
answer
19
views
Controll the dc motor that works with 2xAA bateries using 5v
I have a toy that has a dc motor and is runing with 2xAA bateries ( i think it is 3v motor)
So i want to run it with 5v power supply.
First question: Can 5v damage the motor
Second question: i think i ...
-2
votes
0
answers
31
views
I digitalWrite HIGH and digitalRead returns LOW? [closed]
void setup(){
pinMode(7,OUTPUT);
digitalWrite(7,HIGH);
Serial.println(digitalRead(7));
}
output:
0
-1
votes
0
answers
19
views
Sending POST request to HTTPS clould function by using sim 800l module
hiii,
This is for Sending HTTPS POST request to clould function server by using sim800l gprs module.the main problem is its could not send the data to server but its connects the server and its shows ...
0
votes
0
answers
36
views
Controlling 28BYJ-48 stepper motor leads to tremendous noise on other input pins (ESP32)
I'm trying to control the 28byj-48 stepper motor while sampling audio via I2S with the INMP-441 microphone board. This audio buffer will then be streamed to a web server. However, the stepper motor ...
- 11
-2
votes
1
answer
22
views
Arduino Nano R3 & Deek-Robot datalogging shield
Whilst I am much more at home programming PIC ISR's in assembler, I am building a data logger using a DS1307 to interrupt every second to write data to a USB SD card.
There does not appear to be a ...
-1
votes
0
answers
21
views
ARDUINO BEETLE 3 MODES
I am a beginner what comes to coding, what I am trying to achieve should be pretty simple.
I am using Arduino Beetle and I have 2 switches hooked up to pins 9 and 11. What I am trying to achieve is a ...
-1
votes
0
answers
39
views
ESP32 S3 - I can flash code but serial monitor doesn’t work
I have an ESP32 S3 module on a custom board which has a USB-C port.
I could download the code successfully (well, not every time) on the esp but when I open the serial monitor it doesn’t show anything....
- 99
1
vote
1
answer
20
views
UDPSendReceiveString example using Arduino Due with ENC28J60 Ethernet Module
I was trying to learn how to use UDP protocol to use in my automation project to send commands to an Arduino Due on ethernet with an ENC28J60 breakout board which I have connected to the Due from SPI ...
- 11
0
votes
0
answers
23
views
Aurdion Joystick issue: X axis bleeds over into Y on apmplanner2 Joystick diagnostic tool
I am using the Arudino Leonardo to emulate a joystick. For some reason, when moving the x axis on my joystick, y moves as well on the apmplanner2 joystick evaluation tool. It shouldn't. x is on pin ...
- 13
0
votes
0
answers
38
views
Not getting consistent codes from the IR remote
I'm helping a friend with an arduino project using the irremote library.
I thought initially that we were just receiving the wrong codes for the remote. But when we hit the same button multiple times ...
- 109