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Beginner question: first project with LEDs isn't working
I'm trying to follow this tutorial: My board is ESP32 devkit v1 and I'm using arduino IDE. I have 2 issues: the red led doesn't work (I've tested the red led and it is working), the green led works...
View ArticleAdafruit_TFT display library for SAMD21 (Arduino MKR NB 1500)
The library I downloaded from library manager is working properly with arduino mega and UNO. It also supports Leonardo,Due, SAM3X boards. But for mkr boardit does not compile and gives error. Also...
View ArticleMax Speed of LiDAR on VL53L0X
Hello! I want to built LiDAR using VL53L0X, or some other IR ToF sensor, but I don't know what maximum rotation speed I can use. Can someone help me? 4 posts - 2 participants Read full topic
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Cannot get second BMP image to load on ELEGOO TouchShield LCD
I am trying to use an ELEGOO TouchShield with and Arduino Uno to have multiple screens. Screens will load based on the area of the screen, which I'm referring to as a button, pressed and which screen...
View ArticleWhy does filling up a large char array cause a crash? (ESP8266)
Here's the code in question: void setup() { Serial.begin(115200); Serial.println(); Serial.println(); char test[5000]; int x; for(x = 0; x < sizeof(test)-1; x++){ test[x] = 'x'; Serial.println(x);...
View ArticleHow to power Arduino Giga R1 custom shields correctly
Arduino Giga R1 is powered mostly by 3V3 rail created from 5V using MP2322GQH regulator with 1A current limit. 3.3W 1A is a bottleneck for 3V3 rail, which is used to power Arduino Giga itself, Giga...
View ArticleScratch to alvik
As the title says, i think we need to find a way to use scartch to alvik. Basically its sb3 to micropython, i have seen some github project on that, but is there any other plan for thia possible...
View ArticleHow to pass a File object as parameter to xTaskCreate()
#include<SPI.h> #include<SD.h> #include<FreeRTOS.h> #include<task.h> void encapsulateImage(void * pvParam) { //my function code } void setup() { Serial.begin(9600);...
View ArticleFault on interrupt or bare metal(no OS) environment Error: Main...
Hello to everyone , i use this code : #include <Wire.h> #include <RTClib.h> #include <Arduino.h> #include <MFRC522.h> #include <WiFiS3.h> #include...
View ArticleMQ131 won't work with other sensors
So far i tried to combine multiple sensors but i couldnt combine mq131 ozone with others. #include <MQ131.h> // Define the serial port for MH-Z19B sensor (Serial2 on Arduino Mega) #define...
View ArticleWhat Am I Doing Wrong? 74HC595 + 7 Segment LED Displays
Hi! I'm new to Arduino and trying to build my first project but having some difficulties and I think it might be a code issue, unless I've missed something silly with the wiring. The project is a...
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ESP8266 mini (01) is always crashing no matter what
So i am running an example code to run a simple http server which says hello from esp8266. It SHOULD work but it just keeps crashing no matter what i do. It works only sometimes which i guess makes it...
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Using 2 types of bluetooth commands
Hi everyone, I have an Arduino Giga with a HC-05 module (the embedded BLE is above my paygrade). I've managed the things I want it to do, but only seperately. The first function is to switch relays...
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Serial receiving weird characters
Well, basically I want two Atmega328p to communicate with each other. One of them has the task of receiving and processing data and the other has the task of sending this data to my HTTP server. The...
View ArticleQuestions about Mega 2560 pinout/amperage specs?
Hey all! So I'm working on some flight sim stuff and I know from searching that the following with the 2560: 1.)The sum of all IOL, for ports J0-J7, A0-A7, G2 should not exceed 200 mA. 2.)The sum of...
View ArticleArduino UNO R4 WiFi has been Offline for a long time
Hi, I need some help.(Pardon my one-word English) I recently got an Arduino Uno R4 Wifi and I want to try out the IoT Cloud feature and others, but no matter what I do, the board stays offline. The...
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Eagle file Nano 33 isn't working
Does anyone know why Nano 33 Iot's eagle file cannot be open?? I'm attaching the error. PS: I downloaded the eagle file from the official site Arduino Official Store Arduino Nano 33 IoT The Arduino...
View ArticleInt vs float discrepancies in running average filter
Good afternoon. I have this sub-routine which is working fine with int data types but returns large negative numbers when int is changed to float. data in: COGPos; ALToutput; ROLLoutput; PITCHoutput;...
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Pedal board diode output wiring
I've just picked up a similar project - an older organ pedalboard with some electrical outputs that I want to send through an Arduino with a MIDI shield to send MIDI signals to a sound generator unit....
View ArticleBattery, winter time use (-10 degrees), solar charging
Hi I have a project running on battery, per today single cell LiPo 2000 mAh. System drags 8mA, and each hour a LoRa message is sent that uses 70mA for 2 sec. Lasts for around 90h with no solar...
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