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Beginner Coding Questions
I am just learning Arduino right now. I am trying to make a program where you push a button to turn on an LED using digitalWrite. However, when I push the button the LED stays on even once I have let...
View ArticleEsp32 with 25 or more pins
Guys for my next project I want to build a remote control for RC's using esp32, I'm gonna use: 1x NRF24L01+ PA + LNA 1x LCD display 20x4 8x Buttons 4x On / Off MTS 102 4x B10K potentiometers 2x...
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Count spring coils that are produced by a machine
Hello! I'm having trouble with a new project where I need to count coil springs that are produced by a machine. The springs are throw on a ramp after the machine is finished and then they fall on a...
View ArticleArduino Mid carrier MQTT
Hi, I have recently acquired a portenta mid carrier card, arduino portenta c33 and 4g pro module. I have been able to make connections to thingspeak, read and send data over https. Now I am trying to...
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Dip soldering boards causing relay stress
I'm building a batch of boards with mechanical relays. I decided to do dip soldering with a 35cm*30cm lead-free solder bath. I start a board at about 30 degree angles and finish at -30 degree angles...
View ArticleCompilation error: no matching function for call to...
What should i do? Arduino UNO #define BLYNK_TEMPLATE_ID "TMPL63T2iTTND" #define BLYNK_TEMPLATE_NAME "MLX90614" #define BLYNK_AUTH_TOKEN "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" #include...
View ArticleComportamento non costante in lettura RFID
Buongiorno, sto cercando di implementare un sistema di apertura con badge RF con registrazione su SD del cognome dell possessore del badge. Il cognome è memorizzato nel blocco 1. Il problema che...
View ArticleUsing Adruino & temperature sesor in high heat
I want to use an Adruino with a temperature/humidity sensor and battery in high heat and possibly high humidity environments in the range of 120-170F. The time spent in this range will typically be...
View ArticleSerial vs SerialUSB read from Loop, ODD vs EVEN number of received Bytes
Hello, I am using the Arduino Due. I have noticed something peculiar about the Serial port vs the SerialUSB port. I have written an External Program that basically sends a few bytes (typically 6 or...
View ArticleUse RS-232 to connect a master TX to multiple slave RX in an unidirectional way
Hello ! I'm working on a project for a music show and I'm in a bit of a pickle. I got an Arduino Uno (Master) that must send a simple message (three-digit numbers) to multiple slaves Arduino, but...
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My news and weather scroller project
Here's my completed news and weather scroller, using the Arduino Uno R3, an ESP 8266, and two MAX7219 panels. I made the case from red oak beadboard, cut and engraved with a diode laser cutter, as was...
View ArticleArray searching i can not figure this out for the life of me
''' const int rows = 3; const int collums = 2; int selectionArray[rows][collums] = { {1, 30}, {2, 100} }; ''' this is the code for the array ''' int arraySearch(){ Serial.println("");...
View ArticleI need help for my clock project
I want to make a clock project. The description of my project is as follows: There will be 1 LED to show each hour, the LED corresponding to the hour the time is at that moment will be on. There will...
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Neopixel Rainbow XAIO 240513
Hello Arduino forum, Working to get an Adafruit Neopixel Ring 24 adafruit.com NeoPixel Ring - 24 x 5050 RGB LED with Integrated Drivers Round and round and round they go! 24 ultra bright smart LED...
View ArticleStrange caracter in serial monitor
Hi, I need help for my code. 1 month ago, nothing in particular, but suddently when i upload it, in serial monitor those caracter keep comming : ���������������� (like litteraly thoses one not that...
View ArticleRotation encoder: interrupts are neglected when in While Loop
Hi all, I am not a very experienced Arduino programmer and I could use help on the following issue: I want to make a windingmachine with a 12 volt motor. On this machine I want to use a rotary-encoder...
View ArticleAutomated Watering System
Hello there, I have a project idea to create an automatic watering system for my uncle's garden. The place doesn't have WiFi so that's not an option. He also doesn't want any sensors and just wants a...
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ESP32 Wemos Lolin32
Hello everybody. I am having difficulty linking the ESP32 Wemos Lolin32 device with the platform. Every time I create a "device" and link it with a "thing" it doesn't let me download it because it...
View ArticleArduino FFT for audio spectrum analyzer
I try Audio Spectrum Analyzer Matrix 8x8x4 leds, but I have a problem ): #include <rduinoFFT.h> #include <MD_MAX72xx.h> // Number of samples for FFT. Should be a power of 2. const uint16_t...
View ArticleRMD X8 Pro 1:9 Motor output shaft position read error
I am working on a project where i need the output shaft position of the motor to be fed in my logic, but when i am trying to read the motor position, sing various commands, like 9C, 92, 94, it gives...
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