🔄 Inductors: The Masters of Magnetic Energy
Inductors are key components in electronics that store energy in the form of a magnetic field. They resist sudden changes in current, making them indispensable for filtering, energy storage, and signal processing in circuits.

How Inductors Work

An inductor is essentially a coil of wire that generates a magnetic field when current flows through it. This magnetic field opposes changes in current, a phenomenon governed by Faraday's Law of Electromagnetic Induction. The inductance, measured in henries (H), depends on the number of turns in the coil, core material, and coil geometry.

Types of Inductors

1. Air-Core Inductors:
- No magnetic core.
- Used in high-frequency applications like antennas and RF circuits.

2. Iron-Core Inductors:
- Higher inductance values.
- Common in power supplies and transformers.

3. Ferrite-Core Inductors:
- Compact, high-frequency capability.
- Ideal for filtering and EMI suppression.

4. Toroidal Inductors:
- Donut-shaped.
- Efficient and low electromagnetic interference.

Applications in Robotics

- Power Supply Filtering: Smoothens out voltage ripples in DC-DC converters.
- Motor Control: Manages current in motors, reducing noise and improving efficiency.
- Signal Processing: Filters signals in audio and RF circuits.
- Transformers: Used for voltage step-up or step-down in power systems.

Key Facts About Inductors

- Energy Storage: Inductors store energy in their magnetic fields, releasing it when needed.
- Reactance: The opposition to AC current increases with frequency, making inductors useful for filtering high frequencies.
- Inductive Kickback: Rapid current changes can produce high voltage spikes, often mitigated by diodes or snubber circuits.

Quick Tips for Using Inductors

- Choose an inductor with a current rating higher than your circuit’s requirements to avoid overheating.
- For high-frequency applications, opt for ferrite-core or air-core inductors.
- Use shielding to minimize electromagnetic interference in sensitive circuits.

Useful Resources

Inductor Basics (All About Circuits):
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-3/inductors/

Interactive Inductor Design Tool (EEWeb):
https://www.eeweb.com/tools/inductor-design/

Video: How Inductors Work:
https://www.youtube.com/watch?v=zROPnYiuSWg


Inductors are the unsung heroes that harness magnetic energy to stabilize circuits and enhance performance. Their versatility makes them a cornerstone of modern electronics! 🌀

#Electronics #Robotics #ComponentReview

@arduino_hubb

📌 Simple project for beginners to better understand LED Matrix. I recommend trying it yourself.

Things you didn't know about Arduino!

☝️Arduino Uno is a controller based on the ATmega28 microcontroller, the platform consists of 14 inputs/outputs (6 of which are via PWM), 6 analog inputs, a 16MHz crystal oscillator, a USB port, a fast port, an ICSP port, and a reset button.

The word "Uno" means one in Italian. It's no coincidence that the creators of Arduino Uno tried to start a new era and a new flagship in the Arduino family of controllers with this new controller, and they succeeded. The reason is that Arduino Uno is much more compact, convenient, fast, simple, and of course cheaper than its other "brothers" in the Arduino family of controllers.

Briefly about Arduino Uno:
Microcontroller ATmega328
Operating voltage 5 V
Input voltage (recommended) 7-12 V
Input voltage (maximum) 6-20 V
Digital input/output 14 (6 of which are possible by KIM (Pulse Width Modulation)
Analog input 6
Current constant through input/output 40 mA
Current constant up to 50 mA for 3.3 Vk
Flash memory 32 KB (ATmega328) of which 0.5 KB is taken as a bootloader.
RAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Frequency 16 MHz
In addition, the Arduino Uno device can be purchased from a USB or an organization source connected to it. In this case, if there are several sources, one of them is automatically selected.
The Arduino Uno controller is based on the ATmega328 microcontroller. This microcontroller has 32 kB of flash memory, of which 0.5 kB is reserved for the bootloader, in addition, 2 kB of RAM and 1 kB of EEPROM. Each of the 14 digital outputs can be configured as either input or output. This is done using the pinMode(), digitalWrite() and digitalRead() functions. Each output can drive a resistance of 20-50 kOhm and a current of up to 40 mA.

@arduino_hubb

NEW GIF!

Building a Laser Security System | DIY Electronics Project

In this video, a laser security system is built using simple electronic components. The system is designed to detect intrusions by interrupting a laser beam, which causes an alarm to be triggered. This method can be used for DIY home security or for learning about laser-based sensors.

https://youtube.com/shorts/A_ylSGromRo?feature=shared

My 8-Bit Computer Runs Simple Animation Program

I found an interesting video about building a computer inside of a game. It is Minecraft. Yes, there are people who built Minecraft inside of the Minecraft. I mean that's so incredible — the amount of time, effort, and dedication. It took them 7 months to accomplish. That's so crazy guys!

I wanna share it with you😅
@arduino_hubb

Enjoy the video and get inspired to build your own 8 bit computer. But with microcontroller not Minecraft 😅

@arduino_hubb

On March 3rd, our JS Robotics Team participated in one of Uzbekistan’s largest robotics contests for high school students— "Ixtirochilikka Qadam 2025."

We presented our improved Autonomous Hydroponics, a self-regulating, soil-free agricultural system that integrates sensor-driven environmental control, automated nutrient management, and adaptive lighting to optimize plant growth with minimal human intervention.

Competing in the Regional Stage (3rd round), we faced strong competition from 46 schools across the Jizzakh Region. We successfully passed with 89 points, securing 1st place and earning a ticket to the Republican Stage! 🎉

Additionally, we received $1,200 in funding to further develop our prototype and make it even more competitive for the final stage. Over the next two months, we will be integrating new sensors and components to expand its functions and capabilities.

Wish us luck! 🚀

📸 Check out some highlights from the competition day!
📢 In our next post, we’ll dive deeper into the project itself.

👉 @arduino_hubb