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Official Arduino Discord - Discuss all things Arduino!

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hardware-help

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official-product-help

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DarwinWasWrong

7/31/2025

https://www.arduino.cc/en/contact-us/ no fields are working....

BobHammell

7/23/2025

Help understanding the Alvik power system

I'm trying to understand the power system of the Alvik, as I'd like to create a similar 2-wheeled bot powered with the same 18650 battery and Arduino Nano ESP32. Images below are from the Alvik datasheet: https://docs.arduino.cc/resources/datasheets/AKX00066-datasheet.pdf - When powered by battery, the Arduino Nano ESP32 is powered directly through its 3.3V pin, correct? I see no connections to any other power source....

ballsystemlord

7/21/2025

Need help reactivating or activating new arduino forum account.

Hello, I recently went to sign into my arduino forum account and it said I had the PW or username wrong. I tried to reset my PW, but I never got a reset email. So I decided to try and create an account using the same email I originally did and the same username. Well, it told me that my username (same one as in discord), was in use, but the account had been deactivated due to inactivity. So I can't use that username anymore; and apparently not that email anymore because my attempts with a different username failed. Now normally when I search I find answers to my questions about the arduino. The docs and forum posts are just that good. And my other electrical questions are things not really related to the arduino, so again, I have no reason to post that often....

Sven.Artila

7/16/2025

Arduino UNO SPE Shield Modbus

I can't seem to find anything about the Modbus on this Shield. I am trying to get readings off of a tri-axial accelerometer and sending it over on the SPE. The sensor works fine from my test in a Rust program from my PC. Which library to use? Is there something trivial that I am missing?...

EMAN

7/13/2025

Uploading error?

I'm unsure why I get this error when I try to upload a code, in which the Uno and a MP3 player module are used. This is what I get when I upload the code: Sketch uses 4412 bytes (13%) of program storage space. Maximum is 32256 bytes. Global variables use 391 bytes (19%) of dynamic memory, leaving 1657 bytes for local variables. Maximum is 2048 bytes. avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00...

IBRAHIM SALIH MOHAMMED AL-YACOUB

7/9/2025

ESP 32 Sketch Error

Hello, i have an esp 32 which im trying to upload a sketch to, i have installed arduino ide, installed esp32 board, and 2 libraries ( SensorLib and LVGL ), and I am trying to upload a demo sketch 'SimpleTime', this is the error i am getting: sketch uses 884986 bytes (67%) of program storage space. Maximum is 1310720 bytes. Global variables use 44540 bytes (13%) of dynamic memory, leaving 283140 bytes for local variables. Maximum is 327680 bytes. ...

some1

7/5/2025

Arduino uno r4 wifi. Problem?

Hey I've just brought my brand new Arduino uno r4 wifi board and I've connected it with the Arduino cloud.. however after doing so. My board is briefly flashing the TX light and no more startup animation on the led matrix. Does anyone know what has happened

andi_kp

6/26/2025

Arduino Giga r1 wifi Display shield issues

Hey guys, I’m new here. I thought It would be a cool project to build my own horizontally mounted drill machine, controlled by a giga and a touch- Display shield. I’m struggling with the config-file.. I’m not sure, if I’m doing it right, but it seems like I can’t change font sizes and stuff, because “it’s not declared”. But I’ve changed the definitions of font sizes to 1. If I put an error on the top of the file, the compiler is still working 🙄...

Coder_DO_As_Impossible

6/26/2025

Something about AUG's

Hello guys, can I get to know when will the Arduino User Group Startup or Event by Arduino will be restarted? It was started and closed 3-4 years ago.

Elvis

6/24/2025

Need help identifying "real" Arduino

I might just have bought a clone for the price of the official Arduino. could anyone help me verify if this is the real Arduino UNO R3? This is what I've bought: https://www.apfelkiste.ch/starter-kit-arduino-uno-r3.html?gad_campaignid=21751181183 Is this thing legit? Is it a clone? I'm asking because I'm having trouble with some projects and I'm not sure if the issue is me, the hardware or the code. If I've bought a clone, how can I tell what the real one looks like and where I can buy it in Switzerland?...

Beanie

6/23/2025

My port/board aren’t being recognized? Arduino not in device manager

I was trying to set up my Arduino for my class, I went through the install process and allowed the drivers, but when i plug in the device it isn’t recognized and I can’t find anything in device manager. I really need to get this done today I’m very nervous.

triple_9s

6/18/2025

Blue tooth receiver for my PC

I did some research but couldn't find anything that really helped so I'm turning to the Arduino community. I have a 2PCS HC-05 bluetooth dongle and was wonder how/if i could solder/wire it to a usb port. I learned that i need a USB to TTL converter but i cant find any with the same pinout as the module. I want to do this so ican connect my Xbox controller to my PC but my pc is like 12 years old and doesn't have any means of bluetooth capabilities. Any help would be appreciated.

chuhe022

6/18/2025

Using TFT_eSPI is causing the SD card to not function properly.

When using both the TFT_eSPI and SD libraries with the esp32, the SD card will not function. Although the interfaces for these two modules are independent, how can the issue be resolved?

amogus

6/15/2025

Cloud thing webhook reports inactive when webhook is active

My google app script webhook works when I manually send requests but Arduino Cloud reports it inactive and does not send any data to it.

pikaro

6/12/2025

ESP32-S3 bootloader broken (?)

Hi! I somehow seem to have broken my Nano ESP32-S3 bootloader. Symptoms: - While the sketch runs (which works), dfu-util -l sees a device....

flowami

6/12/2025

USB UNKOWN all was working but know it's usb unknown

my pc don't recognise in my periphral it's write unknown usb i try to move on other usb port and cable but same prob the program on works but i can't connec him to my pc usb unknown i trie to reinstall driver but nothing works...

IsakS

6/9/2025

Arduino Engineering kit Rev2 without Simulink/Matlab

Hi, before I start this endevour, and trying to face the wall a billion times. Is it even possible to complete this project without using matlab or simulink? My current interests are learning C/C++, and Python, through this kit.. If possible. Therefore, if I were to use vscode and PlatformIO, again, would this be possible? I am specifically looking into programming the webcam controlled rover.

W.Hartema

6/7/2025

Tiny machine learning kit shield problem

Hi everyone, we have a small issue we need help with. We're using the Arduino Tiny Machine Learning Kit and trying to power the Arduino (which is on the shield) through the Vin pin of the shield. We're supplying 3.3V to the Vin pin, coming from a step-down converter that regulates 12V down to 3.3V. Unfortunately, the Arduino doesn't seem to power up — there's no LED activity or any sign of life. We've connected GND from the power supply to the GND pin of the shield. (Arduino nano 33 BLE Sense lite)...

Franco

6/3/2025

Arduino connects and works with IDE but doesnt appear in device manager and doesnt connect to excel.

Arduino connects and works with IDE but doesnt appear in device manager and doesnt connect to excel which is what i want to use it for. I want to use data streamer but it doesnt connect or read any data. I tried most things that the internet said but nothing is working. I am using a giga r1 on windows 10.

delboy1978uk

5/20/2025

Uno R3 not detected

i have a "Make your own Uno kit", 100% official Uno R3 with a USB-C module, however it is no longer detected at all in Device manager. The power light is on etc. I have looked up and as far as I can see, it is the usb module that needs reset and reloaded in order to get the device detected by device manager again? However, I don't know how to do that with this, normal R3's have the reset jumpers but this doesnt...

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Official Arduino Discord - Discuss all things Arduino!

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Official Arduino Discord - Discuss all things Arduino!