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Hello, Element 14! I know I've not been around lately on the community as, I've been busy with work, and working on my YouTube videos. Here is the remaining parts of my synthesizer videos. I hope you enjoy!       Part 1: Synthesizers Part 1: The VCO ...
  Hello, Element 14!   The heart of the analog synthesizer is a circuit know as the voltage controlled oscillator or VCO. It's simply an oscillator whose output frequency is proportional to it's input voltage.   Here is the completed schematic: ...
  Hello, Element 14! In this blog post I wanted to show you this VU Meter I made using an Attiny 85, and a WS2812b LED strip.   Here is the schematic of the circuit: This circuit basically just taps into an audio signal from a 3.5 mm jack, which gets converted to a mono signal, and then goes to an amplifier with a gain of 10 which then, goes to an analog input of the Attiny. The potentiometer is for adjusting the input level.   Originally I was going to use an Arduino Uno ...
  Hello, Element 14!   In this blog post, I'll be showing this AC timer switch I made.   It basically uses the Arduino as a timer, and you can set this time using the buttons on the top. Pin 10 of the Arduino is connected to an IRFZ44n mosfet that controls the relay. And, of course the relay is what switches the outlet on the front on, and off.   When you startup the device, it'll ask you to set the timer.     Once you set the timer, it'll ask you if you wa ...
  Hello, Element14! In this blog post, I will discuss the very basics of how to use a multimeter. I sure most of you already know how to use a multimeter, but I thought I'd make this for the absolute beginner.   Voltage Measurements Before making any measurement using a multimeter, you first need to insert your test probes into the correct sockets on the multimeter. The black probe is the ground probe, and is always connected to the port labeled "COM". When measuring voltage D ...
  Hello Element 14! In this blog post, I’ll be discussing how to control brushed DC motors. For this project I have two goals: 1. Direction control using an h bridge. 2. Speed control using PWM.   H-Bridge An h bridge is a type of electronic circuit that allows you to apply voltage to a load in either direction. As you may know, motors will rotate in a different direction depending on the polarity so, an h bridge is perfect for changing the direction of my motor. Here i ...
nickgall2001

Introduction to PWM

Posted by nickgall2001 Nov 26, 2018
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