Connecting additional power supply makes all digitalRead values HIGH
Sorry if this is the wrong category for the topic. I'm using a servo driver board for a project where I'm controlling multiple servos. I made a little circuit that can select the specific servo with...
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Problem with Arduino Leonardo
welcome everybody I have a Leonardo board that was working perfectly. The problem started when I connected it to the computer, as the signal for the letter L flashes slowly and intermittently, and...
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Attiny10 button input wired with external pull-down
Hello folks! I have desiged a custom PCB where an Attiny10 controls 2 LED with a single button. It works great, thanks to the help of some fantastic forum members that had a crack at my novice code!...
View ArticleLa verdad no se que hacer para arreglar este error
El Sketch usa 5218 bytes (16%) del espacio de almacenamiento de programa. El máximo es 32256 bytes. Las variables Globales usan 290 bytes (14%) de la memoria dinámica, dejando 1758 bytes para las...
View ArticleMy Stepper.h program is lagging when doing calculation
Hello! I am having a problem with my code lagging when it is calculating the next step for a stepper motor. My program runs by starting with a reading from a load cell using an HX711 amplifier. While...
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Esp32 Cam Psram Store variable procedure
Hi everyone I try to use esp32 cam in arduino ide to scan qr code I use this project GitHub GitHub - alvarowolfx/ESP32QRCodeReader: A library to read QR Codes using an... A library to read QR Codes...
View ArticleChoose transistors and capacitors and IC
Hi I'm sarathi I need help with how to choose transistors, ICs and capacitors. All are looks same I can't get to understand which one is I need choose? Transistors and IC is the biggest doubt, please...
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Arduino combinacion de motores mas control remoto
//1 incluimos la libreria #include<IRremote.h> //2 incluimos la variable int ledTest = 13; //3 seteo del receptor int receptorControl = 2; //4 incuimos las clases IRrecv...
View ArticlePWM frequency change on 328PB
I am trying to change the PWM frequency of 328PB version from default 487 hz on pins 2, 3 to about 1 kHz. I could have sucess on pin 3 by adding this in the setup: TCCR2B = TCCR2B & 0b11111000 |...
View ArticleOk i got this code from github...
I am trying this code but i want to show the results on a serial monitor instead of a lcd and i do not know what to change in the code so i don't mess it up #include<LiquidCrystal.h>...
View ArticleIR not working after using servo
I'm using DeMos D1 R1. the code is working great without a servo.attach(pinNumber), but with the ir is not printing. this is the working code: #include <Servo.h> #include <IRremote.h>...
View ArticleArduino UNO R4 WIFI & PMS5003
Hello everyone, I'm experiencing an issue with the PMS5003 particle sensor when interfacing it with two different Arduino boards: a standard Arduino Uno and an Arduino Uno R4 WiFi. Although the sensor...
View ArticleSensors for air , water, soil quality
Hello. I am looking at options for sensors for 1.water quality 2.soil quality, 3. air quality they can be for several parameters or just one. I am looking for something that is good to build a Minimum...
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Kirchhoff's Law updated - supercaps rule
The Debrief – 29 May 24 Discovery of Supercapacitors ‘Missing Link’ Moves Laptops That Charge in 1... A breakthrough in the understanding of ion movement within supercapacitors could pave the way for...
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Compiler fault on ESP32
Dear forum, I'm unable to compile the Arduino IoT cloud on my ESP32 since there was an update on the IDE. Do you have any ideas what to do to solve this issue? Thanks and best regards, Johann 3 posts...
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How do I build a robotic arm, with using 4 Servo(MG995), 1 Stepper(17HS4401),...
How do I build a robotic arm, with using 4 Servo(MG995), 1 Stepper(17HS4401), 1Arduino UNO, 1 16 CHANNEL 12 BIT DRIVER - PCA9685, 2 Joystick - (AH-Joystick), 1bread board. Please help me how I have to...
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5V LED strip which do not change color
Hi, I am generally new to arduino programming. I was given the task of making an LED strip that needs to change color using an Arduino. (In this case I use Arduino Uno ATMEGA 328P). The scheme I used...
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PCF8575 issue, what am i doing wrong?
have been struggling to get the inputs working on a PCF8575. it now sort of works but reading the input pins can be erratic giving false positives. the input pins get pulled up to almost 5v and drop...
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Arduino with Adafruit V1 Motor Shield and Potentiometer
Hello, first post as I am VERY new to this whole field. I am trying to control the speed of a stepper motor (two eventually) using a 10K potentiometer. I have the following components: Arduino R3...
View ArticleHow to decrement a variable in every line of a loop..?
I want to decrement a variable after every line in a loop. Basically the loop lines are pulling data from firebase, and it takes around 1 to 2 seconds to pull each data and till that time the loop...
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