Questions tagged [arduino-uno]
The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328P microcontroller.
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pouvez vous m'aider a résoudre ce problème? [closed]
« On dispose de quatre poussoirs S1, S2, S3 et S4 montés en pull down.
À l’appui sur S1 le moteur M1 démarre dans un premier sens en étoile pendant 20 s puis s’arrête.
À l’appui sur S2 le moteur M1 ...
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RC Car HC-05 HW150 [closed]
I have been following this https://www.youtube.com/watch?v=KgooInH3880 video for around 7 hours straight. What ever I do, I get no lights flashing when just inputting the battery power.
When I plugged ...
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LCD screen works fine for a few seconds, then when after delay finishes weird text appears and all inputs add more strange text [closed]
I'm currently making a mash of both projects 07 (keyboard instrument) and 11 (crystal ball) from the Arduino project book. The idea was to have the four button inputs both play a noise using the piezo ...
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Trouble connecting Uno + ESP8266 to Wifi
I am trying to build a simple project to get data from a web server and display it, using an Arduino Uno R3 clone with integrated ESP8266 Wi-Fi.
What I have so far:
The ESP8266 attempts to connect to ...
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Is there a c++ library for the GitHub API and Arduino compatible?
I'm logging some data using an ESP32 board, and I need the data logged to be uploaded from the ESP32 to one of my repositories on GitHub.
Are there any C++ libraries for the GitHub API compatible with ...
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Sketch Upload Fails -USB bus damaged?
My desktop computer abruptly started failing to upload sketches to the Arduino UNO (a smd "Make: Special Edition" board) I've been working with for the last few weeks. The sketch compiles ...
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L298N Motor Driver works only for a single direction
I'm using a L298N motor driver with an UNO and when I try to run a motor few seconds for forward and few seconds backward, it will only move for a single direction and remain still in the second ...
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Ultrasonic sensor showing random readings
I am using a HC-SR04 ultrasonic sensor to measure the distance using an Arduino Uno. When I run this code which is worked perfectly in the previous, it only shows just random readings in the serial ...
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Why LoRa Ai Thinker 433Mhz doesn't go in Receive mode after we send ACK? [closed]
So basically I created a simple Receiver and Transmitter using Two Lora Ai Thinker 433Mhz (Sx1278). I am using Esp8266 with one Lora (as transmitter). It sends packet when we press button. On Receiver ...
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Arduino R4 Minima, trigger function being bypassed?
I am running a trigger function in a while loop in setup that takes in 3 analog inputs, checks if they are within a certain range, then outputs true if they are, false if none of them are.
The code I ...
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Difference between using GND and digital LOW for 7-segment display pin
I am using this 4-digit 7-segment display.
So my circuit is basically 220 ohm resistors for all the segments (display pins 6 through 16 on the bottom each go through a resistor before going to a ...
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I need more free memory on my Arduino. What can I do if I don't want to use float? [closed]
I realize that using float results in loading all or at least parts of the floating point library, which consumes a significant amount of memory.
How can I avoid using float?
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How do I change what variable I am changing based on a separate number?
I am trying to change thing2 if I input 0, and thing3 if I input 1. I don't want to just have if/else to determine if I should be changing thing2 or thing3 because I want this to be more dynamic than ...
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Replace bootloader in ATTiny88
There are other threads about replacing the bootloader on Arduino boards, but the ATTiny88 seems to be rather a different beast.
Instead of creating a serial port and sending the compiled code to the ...
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Stepper motor not moving
this is my second Arduino project and I am trying to figure out why my stepper motor is not moving. I was able to get a basic 28byj-48 stepper motor to work using stepper.h and some sample code.
Now I ...
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