I am trying to read temperature and humidity from a DHT-11 sensor with a arduino uno R3 #include <DHT.h> #include <LiquidCrystal.h> #define DHTPIN A3 #define DHTTYPE DHT11 DHT dht(DH...

My Arduino Uno is plugged in with mac USB port. But Arduino IDE is not showing any port. (macOS- Catalina)

I use Arduino UNO (Arduino 1.8.3). This is my code: void setup() { Serial.begin(115200); } void loop() { uint64_t num = 9223372036854775807; Serial.print(num); delay(1000); } This is e...

I've recently started developing for Arduino. Initially I used the Arduino IDE but I soon realised it was not up to par. Development was considerably slower with the need for IDE restarts every now...

I have a binary that I was able to convert to a uint64_t. It's big, so I really needed a uint64_t. I'm having trouble converting it to a char array. I can do it in a standalone project but not on A...

Okay, so I'm trying to code & upload to an Arduino with VS Code (Visual Studio Code). When I try to upload or verify my Arduino code, this error pops up: If you cannot see that, it says: [Star...

Any calculations x / y (where both operands are 32bit floats) yield 0 in Rust when I compile for the AVR ISA. Specifically, I use avr_hal for interacting with the Arduino. I read unsigned integer v...

Environment Linux Mint 17.1 Python 2.7 pyserial 2.7 Arduino UNO rv3 Desired Behaviour I'm trying to send three values from a Python application to Arduino. It works when doing the following ...

I am trying to dynamically list the USBs connected to the computer that match a certain UsbDeviceClass The information about the class of the USBs I am trying to list in device manager is the follo...

I am trying to connect a HC-05 Bluetooth Module (connected to Arduino Uno) to my Raspberry Pi 3 in the hopes of achieving bluetooth communication between the two to send data from the Uno to ...

I have an OPT101 connected to a slave arduino to measure light intensity. I want to send the data received from the OPT101 circuit to a master arduino that will print the data on the serial monitor...

I'm trying to upload .hex file to Arduino. I don't have any problems with uploading code through an IDE (like blink example or any other). The port and board are correct. So, the problem appears w...

I'm using an Arduino Nano, previously an UNO, to collect data from sensors and then send the data back over a USB connection through a powered hub to a Raspberry Pi model B running Jessie 4.1.19+ M...

I'm trying to program arduino in vscode. The problem is that It's giving me weird header errors: cannot open source file "avr/pgmspace.h" (dependency of "C:\Program Files (x86)\Arduino\hardware\ard...

I'm new to arduino and I have stumbled upon a problem. I want to send data via my esp8266 to my php page. But I don't know how to join my data with this GET request. Here is my code: String card ...

Im working on Arduino Uno board recently im stuck with my code, i couldnt debug using print() in ArduinoIde.So i downloaded AtmelStudio 6.2 for debug purpose. when i set the breakpoint and try to ...

uint32_t a = 0xFF << 8; uint32_t b = 0xFF; uint32_t c = b << 8; I'm compiling for the Uno (1.0.x and 1.5) and it would seem obvious that a and c should be the same value, but they are ...

I'm trying to connect to an Arduino Uno via an android app using Bluetooth Low Energy (BLE). I'm developing on Android Studio, testing with a Samsung Galaxy S4, and with an Android version 5.0.1 I ...

I'm using RabbitMQ with Arduino for the first time and I need to publish data. So I've used the PubSubCLient class. This is the code: #include <SPI.h> #include <PubSubClient.h> #includ...

I am trying to send AT commands to ESP8266 to get connected with internet with the Wifi. When I am sending AT and AT+RST command on serial monitor then I am getting OK and ready response which see...

I am using an Arduino Uno and Windows 7. My goal is to have an LED light that blinks, and when it blinks, it prints out "Blink" to the serial monitor. When I run the code below, I am able to print...

I have tried everything, really, everything. The HM-10 module(bluetooth), has its led and its blinks, than if you connect to it from their app, the led stop blinking and you get the UUID on the iDe...

How can I program my Arduino in C on Ubuntu. I've heard of avr-gcc but all online tutorials seem extremely tedious and don't have options for an AVR chip with the Arduino bootloader. Can anyone hel...

I am trying to set up a java-arduino serial communication. So far I downloaded the code from the Arduino page (http://playground.arduino.cc/interfacing/java) but I get an error. Code: import java...

My Arduino Uno was all set up and was working fine. Project: Arduino controls a 9v motor depending on the command given. As the Arduino only provides 5v, I added a 9v battery to it through a trans...