Don’t build this 12V DC to 120V AC inverter circuit
A description of how a popular 12V DC to 120/240V AC inverter circuit works and its MANY limitations. Watch this video before you build inverter circuits you find online else you risk damaging your...
View ArticleBasic Electricity – What is voltage?
What is voltage and what does it do? Learn about volts, coulombs, joules, power supplies and more in this video! Adjustable power supply The post Basic Electricity – What is voltage? first appeared on...
View ArticleLED Basics
A tutorial on the basics of using LEDs (light emitting diodes). Polarity, forward voltage and current are discussed. 300 LEDs for $13 500 resistors for $12 Adjustable power supply The post LED Basics...
View ArticleBasic Electricity – Resistance and Ohm’s law
A tutorial on the basics of resistance, resistors, and Ohm’s law which describes the relationship between voltage, current and resistance. I also show you how to build a simple resistor + LED circuit....
View ArticleBasic Electricity – Power and watts
A tutorial on electrical power and watts. A practical example of light bulb power measurement is shown as well as a demo how to calculate appropriate resistor sizes. The post Basic Electricity – Power...
View ArticleHow to make a simple 1 watt audio amplifier (LM386 based)
A tutorial on how to use the popular LM386 class AB audio amplifier IC to build a simple mono 1 watt audio amplifier. It costs less than $3 in parts! There is also a brief discussion of how to use high...
View ArticleYou can learn Arduino in 15 minutes
The ultimate Arduino microcontroller tutorial for beginners. Learn what Arduino is, how to choose an Arduino, then build a simple data logger, LED dimmer and motor speed controller. Sponsored by...
View ArticleSiglent SSA3032X Spectrum Analyzer Review & Experiments
Afroman reviews Siglent’s SSA3000X series spectrum analyzer and all the options. There is some info about RF measurements for beginners and some usage experiments are also performed. Firmware version...
View ArticleArduino and Servos: How to Make a Laser Turret with XOD
A tutorial on what servos are, how they work, and how to use them. Then I build a laser turret using a pan-tilt servo kit and an Arduino Uno. The Arduino is programmed with XOD, a free visual...
View ArticleWhy electrolytic capacitors are actually kinda shitty 💩
Electrolytic capacitors are common, but knowledge of their limitations is uncommon. A demonstration is shown highlighting the difference in performance between electrolytic and ceramic capacitors in...
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