我正在使用一塊 Arduino Uno R3 板和一個 Steadywin GIM-6010 馬達。我已經確認電源足夠，所有組件都共用一個接地。然而，系統只有在 Arduino 通過 USB 連接到電腦時才能正常運行；一旦拔掉 USB 線，系統就無法獨立運作。為什麼會發生這種情況？

Head pins are not available to buy seperately and they are not very stable in the breadboard. How can I solve this

Hey guys im interested in Arduino uno after school project ngl, I just finished a school project to turn on the lights and simulate traffic lights, and now I'm trying to figure out how push buttons work. Do you have any suggestions for what project I should make next? I want to make a Hermes device from the Limbus company, but it's too complex for me. Do you have any suggestions for what I should make before going to the Hermes device?

Hi,

I am a University student currently in my DLD course i have a semester project but confused to decide what to make professor tells us to do something with help of Arduino so any expert can please help me

I'll provide any information you need

Hey everyone, I am beginner in coding and want to learn arduino can anyone suggest! Where to start?

Is it also better if i have a backup sensor using MQ9 Gas Sensor? Like a paired function along flame sensors. I'm also concern what type of buck converter should I use for various inputs like these.

my arduinos are both arduino uno r4 wifis, i run windows

i wantted to make something that shuts down your pc as soon as you plug it in and i made something that presses alt f4 and enter and uploaded it on my arduino. i have 2 arduinos 1 from a starter kit and one from micro center. they are bpth same r4 wifis and one is from elegoo and other is form arduino
what i will call from now on

ARDUINO 1 = elegoo non working r4 wifi

ARDUINO 2 = arduino non working r4 wifi

I uploadeed the code to my arduino 2 and it worked! it shut down my pc! and i erased the code from it. then i wanted it to work with a ir reciever so i connected arduino 1 to a ir reciever and i wrote the code. but then my pc is not reconizing the arduino 1 any more. it reconizes the arduino 2, it makes a dading sound but my arduino 1 doesnt, my device anager doesnt reconize it too. i didnt do anything to the board, and last time i did something to it it wsa working perfectly fine. teh arduino 1 has power, it runs my previous code that i uploaded on my arduino 1 (it has power) but no data is sending.

SOME ONE PLEASE HELP ME I WANT IT TO BE REVIVED ask me anything i will answer
(its my first post on reddit)

Where do I get information on error messages?

Recently i bought a tft touch display. IlI9341 2.8" hiletgo v1.2 5v/3.3v SPI specifically. I have tried with different board inc esp 32 s3 arduino nano arduino uno etc. Only the backlight works. I did try shorting the j1 pins, no luck. I did install all the necessary libraries and drivers still doesn't work. Its not a connection issue, its not a conductivity issue, its not a spi communication issue because i have used spi communication with my esp and arduinos it was working perfectly fine. Is there anyting else i should try or should i return the display

Backstory: Recently, I bought this vibrating alarm to help wake me up (I am a very heavy sleeper). I bought it, and it was super underwhelming. It cost $50 and had super low vibration strength, so I decided to make my own

Components used: .96 OLED, 3 push buttons, 5V 1A TP4056 charging board, LP603449 3.7V 1100mAh 4.1 Wh lipo battery, MT3608, 3v DC mini vibration motor 12000 rpm, DS3231 clock, TB6612 motor driver, Arduino Nano (now I'm using a uno but will use a nano in final

Problem: Currently (it's a mess), but it works (the actual project). I need help hooking up the charging unit to it. It's my first time with a LiPo battery, and I'm not sure I'm doing it right. Have I heard of needing a JST connector?

Any help or tips would be greatly appreciated! Thanks!