DIY Electronics | Circuit Basics http://www.circuitbasics.com Raspberry Pi, Arduino, and DIY Electronics Projects and Tutorials Tue, 17 Apr 2018 06:32:49 +0000 en-US hourly 1 http://www.circuitbasics.com/wp-content/uploads/2017/01/cropped-Circuit-Basics-Image-32x32.png DIY Electronics | Circuit Basics http://www.circuitbasics.com 32 32 81654705 How to Design and Build an Amplifier With the TDA2050 http://www.circuitbasics.com/tda2050-diy-amplifier-build-guide/ http://www.circuitbasics.com/tda2050-diy-amplifier-build-guide/#comments Fri, 14 Oct 2016 14:39:17 +0000 http://www.circuitbasics.com/?p=421858 Follow along as I build a 25 Watt stereo amp with the TDA2050. I'll show you how to change the gain, set the bandwidth, find the right heat sink size, and layout the PCB and wiring inside a chassis.

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A Complete Guide to Design and Build a Hi-Fi LM3886 Amplifier http://www.circuitbasics.com/design-hi-fi-audio-amplifier-lm3886/ http://www.circuitbasics.com/design-hi-fi-audio-amplifier-lm3886/#comments Fri, 14 Oct 2016 10:44:57 +0000 http://www.circuitbasics.com/?p=421737 Note: Editable PCB files are available for this project here. The LM3886 is one of the most highly regarded audio chip amplifiers in the DIY community. The reason for its popularity is due to its very low distortion, minimal external components, and low cost. With the right layout and component selection, you can build an excellent sounding Hi-Fi audio amplifier […]

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A Guide for Building TDA2003 Bridged and Stereo Amplifiers http://www.circuitbasics.com/complete-guide-to-build-a-10w-amplifier-with-the-tda2003/ http://www.circuitbasics.com/complete-guide-to-build-a-10w-amplifier-with-the-tda2003/#comments Tue, 11 Oct 2016 07:33:37 +0000 http://www.circuitbasics.com/?p=421925 A complete guide for building stereo and bridged audio amplifiers with the TDA2003, with tips for optimal PCB layout, grounding, and component selection.

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How to Design a PCB Layout http://www.circuitbasics.com/make-custom-pcb/ http://www.circuitbasics.com/make-custom-pcb/#comments Mon, 27 Jun 2016 17:15:21 +0000 http://www.circuitbasics.com/?p=421521 Breadboards are great for prototyping circuits, but they aren’t so good for actually using the thing you’re building. At some point, you’ll probably want to make a project more permanent. The best way to do that is to put it on a PCB. In this tutorial, I’ll walk you through the process of designing a PCB layout and getting […]

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Basics of the I2C Communication Protocol http://www.circuitbasics.com/basics-of-the-i2c-communication-protocol/ http://www.circuitbasics.com/basics-of-the-i2c-communication-protocol/#comments Sat, 13 Feb 2016 16:01:27 +0000 http://www.circuitbasics.com/?p=420648 So far, we’ve talked about the basics of SPI communication and UART communication, so now let’s go into the final protocol of this series, the Inter-Integrated Circuit, or I2C. You’ll probably find yourself using I2C if you ever build projects that use OLED displays, barometric pressure sensors, or gyroscope/accelerometer modules. Introduction to I2C Communication I2C combines the best features of […]

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Basics of UART Communication http://www.circuitbasics.com/basics-uart-communication/ http://www.circuitbasics.com/basics-uart-communication/#comments Sat, 13 Feb 2016 16:00:21 +0000 http://www.circuitbasics.com/?p=420650 Remember when printers, mice, and modems had thick cables with those huge clunky connectors? The ones that literally had to be screwed into your computer? Those devices were probably using UARTs to communicate with your computer. While USB has almost completely replaced those old cables and connectors, UARTs are definitely not a thing of the past. You’ll find UARTs being […]

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Basics of the SPI Communication Protocol http://www.circuitbasics.com/basics-of-the-spi-communication-protocol/ http://www.circuitbasics.com/basics-of-the-spi-communication-protocol/#comments Sat, 13 Feb 2016 15:59:37 +0000 http://www.circuitbasics.com/?p=420646 When you connect a microcontroller to a sensor, display, or other module, do you ever think about how the two devices talk to each other? What exactly are they saying? How are they able to understand each other? Communication between electronic devices is like communication between humans. Both sides need to speak the same language. In electronics, these languages are […]

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Build a Great Sounding Audio Amplifier (with Bass Boost) from the LM386 http://www.circuitbasics.com/build-a-great-sounding-audio-amplifier-with-bass-boost-from-the-lm386/ http://www.circuitbasics.com/build-a-great-sounding-audio-amplifier-with-bass-boost-from-the-lm386/#comments Sat, 04 Apr 2015 09:27:53 +0000 http://www.circuitbasics.com/?p=843 In this tutorial, I’ll show you how to build a great sounding audio amplifier with the LM386 Low Voltage Audio Power Amplifier. I built about a dozen different audio amplifier circuits with the LM386 but most of them had way too much noise, popping, and other interference. Finally I found one that sounds great, so I’m going to […]

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How to Hack a Headphone Jack http://www.circuitbasics.com/how-to-hack-a-headphone-jack/ http://www.circuitbasics.com/how-to-hack-a-headphone-jack/#comments Fri, 27 Mar 2015 10:01:43 +0000 http://www.circuitbasics.com/?p=927 At some point in your DIY audio projects, you’re going to need a way to input audio into your circuits. One of the most versatile ways to do that is to use a 3.5 mm stereo audio jack. These can be salvaged from an old set of portable audio headphones. If you cut off the ear buds, you […]

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555 Timer Basics – Bistable Mode http://www.circuitbasics.com/555-timer-basics-bistable-mode/ http://www.circuitbasics.com/555-timer-basics-bistable-mode/#comments Sat, 03 Jan 2015 03:54:09 +0000 http://www.circuitbasics.com/?p=208 This is part 2 of a series of articles on the 555 timer. If you haven’t already, you may want to read part 1, 555 Timer Basics – Monostable Mode first, to see the layout and functions of each pin. Bistable Mode of the 555 Timer The 555 timer in bistable mode is also known as a flip-flop circuit. […]

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555 Timer Basics – Monostable Mode http://www.circuitbasics.com/555-timer-basics-monostable-mode/ http://www.circuitbasics.com/555-timer-basics-monostable-mode/#comments Sat, 03 Jan 2015 03:53:29 +0000 http://www.circuitbasics.com/?p=206 The 555 timer could easily be the most common chip used in DIY electronics projects because it’s small, inexpensive, and very useful. It’s considered a timer because it can output pulses of electrical current for exact amounts of time. For example, it could be used to turn an LED off exactly 5 seconds after a button is pressed. It can […]

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555 Timer Basics – Astable Mode http://www.circuitbasics.com/555-timer-basics-astable-mode/ http://www.circuitbasics.com/555-timer-basics-astable-mode/#comments Wed, 31 Dec 2014 18:08:00 +0000 http://www.circuitbasics.com/?p=166 This is part 3 of a series of articles on the 555 timer. Part 1 goes into more detail about the pins and how the chip functions, so you might want to start there if you haven’t read it already: 555 Timer Basics – Monostable Mode. Astable Mode of the 555 Timer The astable mode is what most people […]

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