Electric Dhamaka

Electric Dhamaka Electronic DIY Project

Made a New power supply.
27/09/2026

Made a New power supply.

FM radio with Tuning LED
26/09/2026

FM radio with Tuning LED

24/09/2026

Real Capacity Test of 18650 Battery

Aim of this project is to check the real capacity of 18650 batteries and compare an offline market battery with an online battery

First I tested a BRC 18650 battery which was marked as 4000mAh on the label The battery was purchased from an offline market and tested using the XH M240 battery capacity tester

The XH M240 discharges the battery with around 500mA current and measures the total capacity

The result was surprising The battery marked as 4000mAh delivered only 914mAh real capacity

The second battery was a 2600mAh original battery purchased online for 146 rupees This battery delivered around 2600mAh capacity during the test

Now I compared the capacity received for every 100 rupees

Offline BRC battery

Price around 50 rupees
Real capacity 914mAh
Capacity for 100 rupees 1828mAh

Online 2600mAh battery

Price 146 rupees
Real capacity 2600mAh
Capacity for 100 rupees 1780mAh

According to this calculation the offline battery gives around 48mAh more capacity for the same 100 rupees

However the capacity written on the offline battery is 4000mAh while the actual tested capacity is only 914mAh The voltage also drops faster compared with a good quality battery

This test shows why we should not judge an 18650 battery only by the capacity printed on its label A cheap battery may appear to offer higher capacity but the actual performance can be much lower

For reliable electronic projects it is better to use good quality batteries from a trusted source and check the actual capacity whenever possible

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BRC 18650 4000mAh real capacity
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22/09/2026

In today's video I compared 2 solar panels - one BIG and one SMALL - but the small one gives MORE power! šŸ˜±

I tested both panels in sunlight with a multimeter, CD player motor and toy car motor.

*Test Results in Sunlight:*
Big Solar Panel - 6.4 Volt
Small Solar Panel - 6.5 Volt

*Motor Current Test:*
Both motors consuming 0.04 Amp, total wattage is almost same 0.26W

*Motor as Generator Test for Windmill:*
CD Player Motor - Generates 0.71 Volt and rotates very freely
Quikr / Toy Motor - Generates only 0.13 Volt

So the CD player motor is best for making a DIY windmill because it rotates freely and generates good voltage.

Hope you like this experiment! If you enjoyed the video please LIKE, SHARE and SUBSCRIBE.

20/09/2026

I made a Singing Plasma Speaker using EHT Flyback Transformer and NE555!

This circuit first generates high voltage arc using a 555 as a driver for IRF630 MOSFET and a Flyback Transformer. Then I used the 555 as a VCO - by giving audio input to Pin 5 (Control Pin), the arc frequency changes with music and the arc itself plays the music! No speaker needed.

How It Works:
NE555 is wired as Astable Multivibrator ~ 26kHz. It switches the MOSFET which drives the flyback primary (6-8 Turns). When the MOSFET turns OFF, the secondary generates 10kV - 30kV. By feeding audio to Pin 5, we modulate the frequency and the plasma arc vibrates to the music.

Circuit Diagram: Shown in video / Pinned Comment

Components Required:
- NE555 IC x 1
- IRF630 / IRF630A MOSFET + Heatsink
- EHT / Flyback Transformer from old CRT TV
- R1 1k, R2 2.2k, R3 50 Ohm / 10 Ohm
- Capacitor 10nF, 100uF, 10uF (for audio)
- 10k Potentiometer for volume control
- 12V Battery / Power Supply (2-5A)
- UF4007 Diode for protection (Recommended)

CAUTION! HIGH VOLTAGE! This project generates extremely high voltage which can cause severe shock and is LETHAL. Do not try without proper knowledge. This video is for educational purposes only.

If you liked the project, please LIKE, SHARE & SUBSCRIBE for more high voltage experiments!

19/09/2026

EHT transformer High Voltage Experiment.

18/09/2026

220v AC line detector.

17/09/2026

Make a Powerful Non-Contact AC Voltage Detector at Home! This circuit detects 220V AC live wire without touching and the LED glows DIM to BRIGHT based on distance - far = dim light, near = full bright. No microcontroller needed!

This is a 3 Transistor Darlington AC Detector with Long Range (up to 1 meter) and Linear LED brightness control. I will show you how to fix the 50Hz pulsing/beep problem and how to increase sensitivity using a filter capacitor and voltage multiplier.

In this video you will learn:
- How non-contact voltage tester works
- 3 transistor AC detector circuit diagram explained
- How to fix false triggering and NE555 not turning off issue
- How to make range adjustable from short to long distance
- How to get dim to bright LED glow instead of just ON/OFF

Circuit Diagram is in the video. EveryCircuit simulation file included.

Components Used:
2N3904 / BC547 Transistor x 3, 22M, 10M, 100K, 10K, 4.7K, 1K, 470R, 330R, 220R Resistors, 10pF, 10nF, 10uF Capacitors, 1N4148 Diode, 5mm LED, 15cm Wire Antenna, 9V Battery, LMC555 for buzzer (optional)

This DIY non-contact AC voltage tester is perfect for electricians, electronics students and DIY projects. It can detect AC voltage in wires, wall, extension boards without contact.

If you get good range comment your result!

14/09/2026

ESP32 Smart Wind Vane with True North | AS5600 + HMC5883L + ST7735 Display - This Code Actually Works!

AS5600 https://link.amazon/B03THIkKy
Compass https://link.amazon/B04khC10t
ESP32 https://link.amazon/B0cu32yMd
TFT display https://link.amazon/B0clLZjif

This is my DIY Smart Wind Vane project. I used AS5600 magnetic encoder for wind vane angle and HMC5883L compass for real north. ESP32 calculates True Wind Direction = VANE + COMPASS and shows it on ST7735 1.8 inch TFT with smooth rotating compass and arrow.

No flicker, fast SPI 40MHz, smart delta check for low CPU usage.

WIRING:
I2C: SDA-21, SCL-22 (both sensors share same wire)
TFT: CS-5, DC-2, RST-4, MOSI-23, SCK-18, VCC-3.3V, GND-GND
AS5600: VCC-3.3V, GND-GND, SDA-21, SCL-22, DIR-GND
HMC5883L: VCC-3.3V, GND-GND, SDA-21, SCL-22

LIBRARIES:
Adafruit GFX Library, Adafruit ST7735 and ST7789 Library, Wire.h, SPI.h
No library needed for AS5600 and HMC5883L - direct Wire reading.

BOARD: ESP32 DevKit V1 DOIT ESP32-WROOM-32
IDE Setting: ESP32 Dev Module

Full code in comment. Like, Share and Subscribe!



TAGS:
esp32 wind vane, as5600 esp32, hmc5883l esp32, qmc5883l esp32, st7735 esp32, wind direction sensor, true north wind vane, esp32 weather station, arduino wind vane, diy weather station

12/09/2026

3V to 9V Boost Converter Using 555 Timer | DIY DC-DC Booster

Hello friends, in this video I made a simple 3V to 9V boost converter using 555 timer IC. This circuit can run my AM Radio and LM386 speaker amplifier from only 2 AA batteries.

I made this project in 2 ways - on PCB and without PCB on dot board. Both methods are shown in video.

Components Used:

IC 555 x1
BD139 Transistor x1
Inductor 80uH (35 to 40 turns on small ferrite ring)
1N5819 Diode x1
100uF 35V Capacitor x1 for output filter
0.01uF Capacitor x1
470 Ohm Resistor x1
20K Variable Resistor / Preset x1 for voltage adjustment
3V Battery (2x AA)

Circuit Working:
555 is used as Astable Multivibrator. It generates high frequency. BD139 switches the inductor. When BD139 turns OFF, inductor generates high voltage kick which is collected by 1N5819 diode and stored in 100uF 35V capacitor as 9V DC.

You can adjust output voltage from 5V to 12V by rotating the 20K preset. Set it to 8V to 9V for LM386 amplifier. Use multimeter to check output.

This is very useful for low voltage battery projects.

If you like this video please Like, Share and Subscribe.

Thank You.

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