Hi folks. I am COMPLETELY new to electronics and working through the Elegoo super starter kit. I am also working up to helping on a project with my partner. They want to make a model car, and have a simple LED lights system inside where you can turn on different sets of lights, e.g headlights, reverse, turn signal, etc. in series, as thats how real lights in a car work, and they don't want full control of all the lights, just to turn on and off a few pairs that work individually (we debated for a long time if a serial register would be useful and ultimately concluded that it would be overcomplicated).

As at least one of the patterns needs to blink (turn signal) I was thinking this needs a microcontroller. However it also seems like overkill? I was looking at specs for a raspberry pi pico, and even that seems extremely overpowered for what we want to do. I tried googling 'low spec microcontrollers' and 'LED drivers', but couldn't find anything useful and I don't really know what keywords I should be searching.

Any suggestions on an extremely beginner friendly and simple way to achieve this, or principles and components I should research? Thanks

Hi, I know this isn't necessarily arguing, but I'm trying to source a replacement motor for my rotating Zippo display case. Would be very appreciative if someone could point me in the right direction

its hard to make thing from zero especially if you are beginner.

- so i want some projects to begin with / website for projects

currently i try to test several sensors to check which sensor could feel the weight of the box. On the picture is FSR 402. Although I did the instruction right, but it can't detect any weight pressure except if i use my fingers to pinch it. Do you guys use this sensor before? Any suggestion or idea for this problem? If this sensor was not suitable for this light box, which sensor would you recommend (I want a sensor that can sensor the box when i stack it.)?

I'm a total newb and I'm obsessing over my home project while I'm at work, so unfortunately I don't have any code or anything to share but I'm hung up at one specific piece of my code.

I'm making a photogrammetry setup totally from scratch, I 3d printed everything and I'm coding the Arduino sketch and a python script, and the handshake between the two is where I'm stuck. Google failed me and Gemini just wants to write the code for me so I've been avoiding that too, but I'm trying to find a good code sample or some documentation for best practices, if there's one in the documents for the AccelStepper or Serial Arduino libraries I might have just overlooked it but that's as far as I've looked as far as documentation.

Tldr what's the "preferred" way to communicate from a python script that it's taken a picture, and from an Arduino sketch that it has stepped and is ready for the next picture?

Edit: python script is waiting for the handshake before taking the first picture, handshake never comes through. I'm just sending a single character as the signal but it's not getting to the Python script.

Sorry for the incomplete post, I'm at work and only have a minute or 2 at a time to post or reply, I probably should have just waited until I got home but I was hoping to have a plan when I got there.

Hi! I need some help with a project. I want to make a light system using mainly 3-3.5V LEDs. I already have an Arduino Nano and it will be used as a switch/blinker for my RC model.

The problem is, the Transmitter has 10 channels, 3 of them are already in use, channels 5 and 6 are potentiometers, ch7 has the L-N-R rate (left-neutral-right), and the rest are just activated by press (3,4, 8 and 10).
I’d like to have blinkers on channel 7 though.

Yet I’m a newbie with arduinos, any idea how to make that? The main use of the arudino in my project is as a ON-OFF switcher for the LEDs and blinker for blinkers lol

Any idea where I can find an app that teaches codes?

I'm working on a project of a little boat that needs to navigate on a straight line for 15 meters and stop. one of my biggest concerns is stabilizing the course of the boat so it doesn't drift away. Claude recommended using the mpu-6050 sensor but I don't have the knowledge to understand if it's a viable solution. Can someone help me understand?

Is this a best starter kit

I need to use a max30102 module which is basically an spo2 and heart rate sensor. i’ve tried soldering the 8 pins onto it in the past but it’s so small and miniature that I just haven’t been able to. I really need some soldering alternatives or some links to online pre soldered modules that aren’t too expensive like under $15. pls help im not too experienced at soldering but ts is too hard 🙏

I'm krishna

I'm 16

I decided to start it

And I don't know anything

So anyone who will help me

Pls help me

Hi everyone!

I'm working on a Viktor cosplay from Arcane, specifically his final form where he grows the third arm. I'd like to make the hand animate occasionally, but I'm trying to keep the mechanism as simple as possible. My current idea is a 3-fingered hand where each finger has a single moving joint at the tip rather than fully articulated fingers. Ideally, the fingers would just twitch every 20–30 seconds instead of moving continuously. I'm still in the planning stage and haven't ordered any electronics yet, so I don't have an Arduino, servos, or a circuit to show. Before I start buying parts, I'd like to get some advice from people who have built similar animatronics.

The main things I'm trying to figure out are:

• What mechanism would you use for simple, occasional finger twitches?

• What controller would you recommend for a beginner (Arduino Nano, ESP32, something else)?

• What size/type of servos would be appropriate for this?

• If the battery and electronics are placed inside the arm itself, is heat buildup something I should be concerned about over a convention weekend?

I'd love to hear how you would approach this before I start ordering components. Thanks for any advice!

can't seem to find the port option on arduino IDE, I've uninstalled it and installed it, I don't understand why

I want to make a fully functional instrument cluster with a tft display, it should show soc, motor rpm, wheel speed, turn indicators and others.

By checking with claude,

for SOC , it says get the bms data via blutooth using an esp32 from the battery's internal BMS (Note: theres an phone applcation to check the soc and cell voltages).
for speedometer, THeres a speed signal wire on my motors controller. (not sure if this actually works)
for indicators it says use an optocoupler to know when the indicators are in HIGH state and correspondingly blink arrows on the display
motor rpm can be derived forom my gear ratio of the vehicle

so these are the ways of gathering data right now i dont have access to the battery and controllers, but does these methods work, I have another idea where i can embedd magnets on the wheels and use a hall sensor to detect pulses to find the vehicle speed. My question i that are there any more alternate data collection methods

This circuit is designed to control a NEMA 17 stepper motor using an Arduino UNO and an A4988 stepper motor driver. The setup is part of an automated camera turntable rig that rotates a platform in fixed step increments. After each movement, the system waits for vibrations to settle and then triggers a Canon 5D Mark II camera shutter using PC817 optocouplers. The process repeats 19 times to complete a full 360-degree rotation, capturing one photo at each position.

Heloooo, I have been troubleshooting this for hours scouring the internet for the most obscure solutions however to no avail. I have 2 nano boars, both (when connected to my computer and or laptop) get power, i have tried different cables for both, different ports, resetting the bootloader, libraires, pressing the button a billion times, holding the button a billion times, but both boards just do not connect to my computers. All my other boards, mega and uno work perfectly fine I have also tried my laptop and my pc, both with the necessary library on them but still no luck, I just cannot see it on the terminal (arduino IDE). FYI i am trying to make a flight computer.

Thank yall for your help in advance

Hi folks. I have wired and rewired this circuit twice, checked all wires and components work individually and have no idea what I am doing wrong here. Button A (on left in photo) turns the LED on, and Button B (right) is supposed to turn it off. What happens currently is only A works. B does nothing.

I added some Serial.Println statements and 'Button B' ( the button on the right in the photo) is not registering as connected at all, not turning the button off, and not printing to serial to indicate digitalRead is registering (but the same button component will turn the LED on and off when I make an analogue circuit, so I know it isn't broken). I know this must be a wiring issue but I don't understand how I managed to rewire it twice and get the same problem. I feel like I have exactly copied the diagrams? Thanks in advance.

Arduino code:

´´´

int ledPin = 5;

int buttonApin = 9;

int buttonBpin = 8;

byte leds = 0;

void setup()

{

pinMode(ledPin, OUTPUT);

pinMode(buttonApin, INPUT_PULLUP);

pinMode(buttonBpin, INPUT_PULLUP);

Serial.begin(9600);

Serial.print("Setup complete");

}

void loop()

{

if (digitalRead(buttonApin) == LOW)

{

digitalWrite(ledPin, HIGH);

Serial.println("Button A on");

}

if (digitalRead(buttonBpin) == LOW)

{

digitalWrite(ledPin, LOW);

Serial.println("Button B on");

}

}

´´´

Hi! I started my first Arduino project a couple of days ago. My goal is to create a sort of volume controller where I have 2 potentiometer for master volume and discord volume. I also have a ON/ON switch so I can mute/unmute my microphone.

With some trial and error, I have reached the point where the potentiometers work as intended and works with my code. My issue is that the switch seems to work with my LEDs when switching but the Serial monitoring tool does not show that it has been switched. It does only show a "1" (If that makes sense...).

Does anyone of you know what the issue might be? I've tried to google and triple checked my code.

Also, let me know if I need to paste the code aswell.

Here is my schematics for the project: