Top new questions this week:
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I am making an application that is used to measure the velocity, it has an accelerometer that measures the component acceleration in the XYZ-axis. When the car is moving just straight the measurement ...
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I am designing an automation system for my research project and planning on using Arduino Uno to do the same. The program is to execute simple instructions based on few input parameters and does not ...
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I recently found this model with the ID 'HW-0519' on it. It can be found online (HW-0519 in Aliexpress) and is sold for the purpose of converting UART to RS485 communication using Arduino devices. The ...
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When I open my serial plotter to get the graph for my HC-SR04 sensor it doesn't show anything. My plotter looks different too. I have attached images below as well.
Only those numbers on the top-most ...
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ESP32 with RTOS, test app with 2 independent tasks. Each prints a message to OLED display.
Why text gets frequently scrambled? Mutex have been used to share display resource.
#define DEBUG_ESP ...
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I have a problem with transmiter (Arduino uno) and receiver (Arduino nao). When I am trsmiting that I receive that:
An this is my code for receiver
#include <SPI.h>
#include <nRF24L01.h>
#...
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I have a sketch as follows:
void loop()
char End_Char = /n;
if (Serial.available()) {
aInt = Serial.read();
}
switch (aInt) {
case 1:
// does a task that is ...
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Greatest hits from previous weeks:
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I believe I can supply the Arduino with power in three different ways:
Use USB. The design trusts the 5V to be regulated, and does not regulate it in any way.
Use a regulated power source, trusted ...
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According to the Arduino documentation, the ATmega328 has 32KB of Flash memory for the bootloader + uploaded sketch, and only 2KB SRAM for runtime data. The ATmega2560 has quite a bit more, totalling ...
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I would like to start the development of some basic Arduino projects but I don't own an Arduino board yet. Is there a way I can write my code and emulate/test it using a desktop computer so after my ...
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In Fast.Led lib for arduino there is a code to turn off all leds
FastLED.clear ();
Is there also a shortcut to turn all LEDs ON, and with a specific color
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I've been looking for a while inside Arduino's files to find the core library. However, I haven't found them yet. Where on my hard drive can I obtain the core library files (.cpp and .h) necessary for ...
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I have code for an ultrasonic sensor which I found from a site. Here is the code:
#define trigPin 12
#define echoPin 13
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(...
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With reference to the Arduino Uno, Mega2560, Leonardo and similar boards:
How does SPI work?
How fast is SPI?
How do I connect between a master and a slave?
How do I make an SPI slave?
Please note: ...
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Can you answer these questions?
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I found a simple code online that meets my goal to almost 100%, however when I place my hand in front of it, the number continues to count. I am trying to only count "1" when the solid ...
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I am writing a program in Python (using PySerial) that needs to read data from the Arduino quickly. For this reason I have set the serial timeout to 0.01 seconds. (Baud rate is 115k) If I don't set ...
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I need a 2KHz complimentary PWM waves with adjustable duty and phase that is triggered by an external 4KHz source.
After reading the datasheet I think there might be 2 way to do this:
Use a TC unit ...
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