Last seen: Feb 14, 2026
UNO R4 WiFi has a built-in ESP32, so treat it as an ESP32 board. Whatever you can do using an ESP, you can do using UNO R4, even more. There's a catch...
Linear regulators (like the 7805) simply drop the excess voltage as heat. If you have 12V input and need 5V output, the difference (7V) is turned into...
Here are some of the best circuit simulation software(online and free): Tinkercad Falstad Simulator.io Circuit.io Circuit-Cloud PartSim Doci...
For a tank water level control system, both active and passive buzzers can be used for sound alerts, but which one is best depends on your needs.Key D...
Well usually, people forget to add the serial.begin() command inside the void setup. Since you’ve already matched the baud rate in your code and Seria...
@catelectronics It depends. Can you explain the project or application for which you will use the microcontroller?
Hey there! The continuity function on a multimeter is super handy, especially when you're troubleshooting. It's the only function I have used more tha...
A motor controller offers several advantages over a potentiometer when controlling a DC motor’s speed: Efficiency: Potentiometers dissipate powe...
Well, it depends. But I believe under $5, the basic version of ESP32 with ESP32-WROOM chip i.e., ESP32 DOIT DEVKIT V1 beats them all!
L293D-Vs-L298N.jpeg The only important difference between the L293D and L298N motor driver module is the current rating: L293D: Can handle...
@jignesh I would suggest you try each sensor first and then decide yourself.
1. Yes you can. But then you have to turn ON only one LED at a time. 2. It is simple. If each LED consumes 12mA we get, total current= 12X15 = 180mA, ...
Yes, you can connect more than 15 LEDs directly, even 20. The only thing that matters is whether you are under the current limit or not. See, the cu...
Connecting a camera directly to an Arduino UNO is challenging due to its limited processing power, memory, and data transfer capabilities. It is not w...
Imagine you have a button connected to your Arduino. You want the Arduino to know when the button is pressed or not. Without a pull-up or pull-down re...