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Ambient Light Monitor: Understanding and Implementing the ADC

Ambient Light Monitor: Understanding and Implementing the ADC

Part 2 in the "How to Make an Ambient Light Monitor" Series. Our smart ambient light monitor will need to digitize and analyze signals from an optical detector, so it is time to explore the EFM8’s integrated analog-to-digital conversion functionality.


Projects Aug 05, 2015 by Robert Keim
Ambient Light Monitor: Measuring and Interpreting Ambient Light Levels

Ambient Light Monitor: Measuring and Interpreting Ambient Light Levels

Part 3 in the “How to Make an Ambient Light Monitor” series. The project continues by building an ambient light sensor circuit on a breadboard, digitizing the circuit’s output signals, and interpreting the digitized measurements.


Projects Aug 05, 2015 by Robert Keim
Intermediate LTSpice Tutorial

Intermediate LTSpice Tutorial

LTSpice possesses several features that can be used to test your design beyond simple transient analysis and AC sweeps. This article will go over a few advanced functions.


Transmit Temperature with Raspberry Pi

Transmit Temperature with Raspberry Pi

How to interface a Raspberry Pi to an I2C temperature sensor (TMP102) and then publish the data to a Google sheet and graph.


Basic Circuit Simulation with LTspice

Basic Circuit Simulation with LTspice

LTSpice is a versatile, accurate, and free circuit simulator available for Windows and Mac. This is an overview of AC and DC simulation, as well as how to analyze output signals.


Introduction to Arduino SPI Library with LTC1286 and DAC714

Introduction to Arduino SPI Library with LTC1286 and DAC714

Introduction to the Arduino SPI Library with example sketch for the LTC1286 12 Bit ADC and the DAC714 16 bit DAC.


Projects Jul 17, 2015 by Aaron Dennis
Build Your Own Alarm System with an LM386 Amplifier and an NPN Transistor

Build Your Own Alarm System with an LM386 Amplifier and an NPN Transistor

Build an analog booby-trap alarm system with an LM386 amplifier and an NPN transistor. This alarm system is activated by a trip sensor that sets off a screeching noise, alerting everyone and scaring off thieves.


Projects Jul 13, 2015 by Patrick Lloyd
Fritzing Takes Your Design from Concept to PCB

Fritzing Takes Your Design from Concept to PCB

Fritzing is an open-source software package that makes designing a PCB a more attainable reality.


Special Cases in Nodal Analysis

Special Cases in Nodal Analysis

This article describes certain special cases when performing nodal analysis.


Mesh Analysis and Dependent Sources

Mesh Analysis and Dependent Sources

This article describes the technical aspects of Performing Mesh analysis with Dependent Sources.


Delta/Wye Transforms: Behind the Scenes

Delta/Wye Transforms: Behind the Scenes

Delta/wye transforms allow us to replace part of a circuit with a different circuit that, while equivalent in behavior, can make circuit analysis much simpler. Here we learn where these transforms come from.


Understanding and Applying the Hall Effect

Understanding and Applying the Hall Effect

Learn about the Hall effect and how it enables accurate, isolated current measurements.


Understanding Inductor Designs for Converters

Understanding Inductor Designs for Converters

A handy technical article demonstrating filter inductor design for boost converters, design of the coupled inductor for a two-output forward converter, and the design of flyback transformer in continuous conduction mode.


Beyond the DMM: Components and Circuits for Measuring Current and Voltage

Beyond the DMM: Components and Circuits for Measuring Current and Voltage

Learn about devices and techniques used for in-circuit monitoring of currents and voltages.


Voltage and Current Dividers: What They Are and What They Do

Voltage and Current Dividers: What They Are and What They Do

This article describes what voltage and current dividers are and how they can be used.


Five Places to Find Part Info Online

Five Places to Find Part Info Online

These online sources not only help you find part data quickly, but can also help you determine availability and manage bills of materials.


Understanding Noise and PSRR in LDOs

Understanding Noise and PSRR in LDOs

The effect of noise and Power Supply Rejection Ratio (PSRR) in Low-dropout (LDO) regulators.


Remote Viewing: Communicating with an Arduino via Infrared Light

Remote Viewing: Communicating with an Arduino via Infrared Light

An infrared (IR) light sensor allows the use of an Arduino to receive and decode signals from a TV remote control.


Projects Jun 14, 2015 by Tim Youngblood
The Basics of Power Semiconductor Devices: Structures, Symbols, and Operations

The Basics of Power Semiconductor Devices: Structures, Symbols, and Operations

Learn about various power electronic devices which act as solid-state switches in the circuits, meaning they act as a switch without any mechanical movement.


Converter Evaluation and Design

Converter Evaluation and Design

List of common converters and calculations of switch stresses/utilization are presented in this article. Converter design with the aid of computer spreadsheet is also shown here. A short list of converters is provided based on the basic topologies and circuit manipulations of the converters discussed on other technical articles.