Just a Note: Apologies to everyone, this is all I can manage for now since I'm still new to this. When I have more free time, I'll repost an image of the actual Arduino diagram. Thank you all for the advice—I really appreciate it.
Sorry, I can't follow the cluttered picture. Could you post an annotated schematic showing all connections, including power, ground, and power sources? It seems you may be using the Arduino as a power supply, which it wasn't designed for. You might be fine, but it's hard to tell from the picture.
the picture that i provided is my setup for my project. sorry about my diagram, im a beginner. my main question is about powering multiple modules, like the Arduino Mega, camera module, RFID module, touchscreen, WiFi module, solenoid lock, and ultrasonic sensor, using a single 12V power supply. I want to make sure the voltage is managed safely for each component without overloading the Arduino and damaging the components.
im sorry about the picture, thank you for your feedback. I’m still learning, so I appreciate the guidance. I understand that the setup might look cluttered, and I'll try to make a clearer schematic next time. My main question is about safely powering all my modules with a single 12V power supply. I'm using several components, including an Arduino Mega, camera module, RFID module, touchscreen, WiFi module, solenoid lock, and ultrasonic sensor. I want to make sure I distribute power correctly without damaging the Arduino and the modules. the picture that i provide is my setup for my project.
A 12V PS is ok, but you will need buck converters to produce 5V and 3.3V. You will need to determine maximum load then compare that to current output of the buck converters.
Can you please post a copy of your circuit, a picture of a hand drawn circuit in jpg, png?
Hand drawn and photographed is perfectly acceptable.
Please include ALL hardware, power supplies, component names and pin labels.
Component names and pin labels are essential.
How is you relay suppose to switch anything with only one output connection?
What is the component it's output pin is connected to?