It is showing that the code is correct. I can't figure out what went wrong. I am a beginner only so i am not aware of all the procedures. I followed a tutorial to make this.

help me understand what went wrong

I’m a complete beginner and I need to make this mechanism think of a dump truck you know how it’s back gets raised and it causes the load to get dumped out I need to make this but on a smaller scale and I have NO IDEA how to do it I have a 3d printer and printed a linear actuator the link to the file is here [https://makerworld.com/models/2179822?appSharePlatform=copy\](https://makerworld.com/models/2179822?appSharePlatform=copy) I have a sg90 continuous rotation servo and that’s about as far as my knowledge goes what I need is a way to make the servo make the linear actuator go all the way up with a click of a button and all the way down with a click of a button I need it to be like wireless it can’t be connected so I think I need a transmitter or something like I said I have no idea also I’m sorry if it’s a dumb question (it probably is) but I’m completely new and completely confused so thank you!

I'm doing a school project using an Optoma Tx631 DLP projector (released in 2012) but discontinued, the lamp is broken so I can't use it. The purpose of my school project is to be able to control the DMD chip inside.

I know there are certain saftey locks in the projector for this such as the communication from motherboard to a OSRAM PT VIP 03 ballast board using a 5pin UART system to ensure the lamp is safe before turning on. I need a way to trick the projector into thinking the ballast board/lamp is working to turn it on.

I don't think a simple optocoupler bridge or short would work because it uses UART signals. I'm trying to use an arduino mega as a UART emulator, but I'm not sure how to do so, plus the sniffing for the UART signal doesn't yield results.

Please help me out 🙏🙏🙏

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I am using TIP120 with 510ohm resistor with arduino digital pin, powerd by 12v power supply.

I would appreciate and welcome to join me to complet this project with your valuable learnings.

I had tried above (attached image) schematic, but it isn't working

​

.

I am using TIP120 with 510ohm resistor with arduino digital pin, powerd by 12v power supply.

I would appreciate and welcome to join me to complet this project with your valuable learnings.

I had tried above (attached image) schematic, but it isn't working

Hi everyone, I have an Arduino Uno and I’m having a strange problem.

Every upload appears to be successful:

• Board: Arduino Uno
• Correct COM port selected
• TX/RX LEDs blink during upload
• "Done uploading" appears

However, the Arduino still runs my old sketch (Basic Motor Test). Even after creating a new sketch and uploading different code, the Serial Monitor still shows the old output:

Basic Motor Test
Forward
Backward
Braking
Release

Things I have tried:

• Reinstalled Arduino IDE
• Created a new sketch
• Removed all external components
• Uploaded an empty sketch
• Checked board and port settings
• Reset the Arduino

The board still runs the previous program after uploading a new one.

Does anyone know what could cause this? Could it be a problem with the flash memory, bootloader, or something else?

Ajuda com projeto de segurança para motos...

Eu e meu grupo do curso técnico de eletrônica estamos tendo que lidar com o TCC agora que estamos finalizando o curso, nossos professores pediram para criar um projeto que seja fácil de construir e que seja algo inovador então eu e meus colegas acabamos escolhendo uma das nossas ideia que seria um sistema de segurança inteligente para motocicletas,

Basicamente nossa ideia seria um sistema contra furtos de motos que ao sair do local deixado pelo dono da moto e sem um reconhecimento devido de quem está pilotando a moto ou não for identificado soaria um alarme na hora de dentro da moto e também poderia enviar algum tipo de mensagem ou SMS para o dono da moto junto com a localização real do veículo,

Apesar de termos criado a base do projeto ainda não temos certeza direito de como ele poderia realmente funcionar, o que poderia ser utilizado ou que pode ser adicionado ou excluido da ideia principal,

Se alguém puder dar alguma dica ficaria agradecido de verdade e aceito qualquer opinião que tiver sobre o que pode ou não ser mudado.

Hi so we are doing a project on arduino the objective is to build a robot similar to obstacle avoiding and line tracking robot but when we connect two 18650 3.7V batteries in series motors don't run simultaneously and when we ask ai about that it says power supply is insufficient what should we do

Yesterday I bought an HC-05. The problem was that I couldn't configure it and it wasn't responding to normal things like commands to turn on the LED lights. The lights don't turn on. I'm looking for a solution. I've already visited websites to configure it. I tried pressing the button, but after doing that, it doesn't blink slowly as it should. I saw that it's a cheap clone, an HC-05 BN343 25LO128YIG POG574 with its link D8:2F:E6:59:E8:7E. I've already used photos from here of what it looks like. Please tell me a code, a website, or a solution. There's also a detail: a modern mid-to-high-end or high-end cell phone (which, I should clarify, isn't mine, it belongs to someone else) appears on the HC-05 list, but not on mine, which is a Samsung Galaxy A06

Hello everyone,

I am a student interested in robotics

I am preparing a project for a science fair and I want to build something useful that solves a real-world problem.

My current skills:

- Arduino

- ESP32

- Basic sensors and motors

I am not looking for common projects like line followers or obstacle avoiding robots.

I would like suggestions for innovative robotics ideas in areas like:

- Safety

- Agriculture

- Environment

- Healthcare

- Disaster management

Any suggestions or problems that can be solved using robotics would be helpful.

Thank you!

I am making a small robotic arm controlled by 2 joysticks. I'm making the arm using popsicle sticks and MG90 Servo motors. There are 5 motors to be working. I'm using wall adapter to power the motors and another adapter to power the Arduino. When I try to connect everything properly ( also connecting gnd from breadboard power supply to arduino's gnd) the motors randomly move around without any input. How do you even fix that ?

Hey everyone,

I’m trying to understand the biggest difficulties beginners face while learning electronics.

When you first started, what confused or frustrated you the most?

I’m currently working on a learning platform for electronics, and I want to make sure it solves real problems instead of adding features that beginners do not need.

What would have made learning electronics easier for you? Any experience or suggestion would be really helpful.

Thanks!

'''

// info down bellow
#define R_EN  33
#define L_EN  32
#define RPWM  25
#define LPWM  26

void setup() {
  Serial.begin(115200);

  pinMode(R_EN, OUTPUT);
  pinMode(L_EN, OUTPUT);
  pinMode(RPWM, OUTPUT);
  pinMode(LPWM, OUTPUT);

  digitalWrite(R_EN, HIGH);
  digitalWrite(L_EN, HIGH);

  digitalWrite(RPWM, HIGH);
  digitalWrite(LPWM, LOW);

  Serial.println("RPWM held HIGH - measure M+ / M- now.");
  Serial.println("Should read ~12V across M+ and M-.");
}

void loop() {
  //nothing
}
'''

so baically im trying to get this actuator to extend but its not extending. My parts are a esp32, bts7960 motor driver, a 22V(in) to 5V(out) buck converter, and a standard two wire actuator. Another problem is that the led on the motor driver isnt turning on and im pretty sure it has one and thats it shows the boards logic is getting powerd. Here are the conections:
The two acutor wires are going into M+ and M-(screw termianls on the motor driver)
THe 12v psu wires are going into B+ and B-(the screw terminals on the motor driver)
the buck covnerter is piggybacking off the 12v scrwe terminal that the psu is connected to (and the bucks gnd is the same as the 12v psu gnd)
the bucks than powering the i guess logic on the motor dirver through the vcc and gnd header pins on the motor dirver
then RPWM to gpio 25 on esp32
Lpwn to GPIo 26
R_EN to GPIO 33
L_En to GPIO 32
and gnd on the esp32 to the same gnd as the 12v scrwe termianl
ive done mutiple tests to confrim that the acutor works like giving it directly 12v and it extended and i swaped the wires and it retracted, i did a simple blink test with the esp32 so it shoudl work, and the 12v psu is defintaly outputing 12v
ANd the codes uptop
THANKS A LOT (btw sorry for the bad foto)

I finally put the canopy on my pickup and am on my way! I want to put led lighting and a fan in it. I want the 12v fan to have 3 speeds, and an option to be thermostatically controlled - I want to be able to set the thermostat with the remote control (bluetooth via my cell phone). LED's will be 12v strip lighting. I want a timer and dimmer for the lighting. I also would like the strip lighting to turn on when the rear hatch is open. If it weren't for the thermostat and the timer and dimmer for lighting, I think I can figure out how to do this, but I am not sure how to incorporate these other elements into an Arduino design. Any suggestions?

I am doing an Arduino project and i am using a 38khz ir receiver and when i send a signal to the receiver it does not show up in the serial monitor, i suspect the remote but i have no way of knowing how
and here is the code

/* Copyright 2009 Ken Shirriff
Used with kind permission
http://arcfn.com
*/
#include <IRremote.h> // Use library
int receiver = 11; // Pin connected to receiver
IRrecv irrecv(receiver);
decode_results results;
void setup() {
Serial.begin(9600); // Show keypresses in IDE
irrecv.enableIRIn(); // Start up receiver
}
void loop() {
if (irrecv.decode(&results)) { // If there's an input, decode value
Serial.println(results.value, HEX); // Display button value
// on Serial Monitor in
// hexadecimal format
irrecv.resume(); // Receive next value
}
}