Dangerous gu10 led spot light is cheap and bright but could kill you – seriously
Help support Julian's LED videos on Patreon: https://www.patreon.com/julian256 This GU10 LED spot light is cheap (£3 including postage) and bright.…
Ridiculously cheap voltage regulator board uses lm2596 smps chip
There must be hundreds of thousands of these little switched mode regulator modules in China just waiting to be posted…
Diy ipod camera stand with close-up lens for making youtube videos
Make your own iPod or iPhone camera stand for shooting YouTube videos. Made from bits of wood and metal brackets…
110ah car battery connected to 80w solar panel
A friend gave me this massive 110Ah car battery which I've connected to an 80W solar panel using a PWM5…
Comparing two cheap led voltmeters with 3 decimal places accuracy
Found these two LED voltmeters on eBay for less than £5 including postage. They measure from 0v to 3.3v. Bought…
How to drive high power leds at maximum brightness
To drive this 3 Watt LED safely two things are needed - adequate heatsinking and a current limited regulator.
Led 9w energy saving gu10 bulb has 60 smd 3014 leds 100w equivalent
This 9W LED spot light is bright and has a wide dispersion. It features 60 surface mount 3014 LEDs (3.0mm…
Blue led dies rapidly on 9v battery but ok on cr2032 lithium coin cell
Don't try this at home - a blue LED connected directly to a 9v battery without a current limiting resistor…
Cheap led voltmeter measures up to 30v has 2 decimal places accuracy
For about £3 (including postage) you can buy this LED voltmeter which had 2 decimal places of accuracy. It measures…
Using constant current psu to drive leds in gu10 spot light
Took apart this faulty GU10 LED spot light to see if the LEDs can be made to light. Using a…