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Ambient Light Monitor: Zero-Cross Detection

Ambient Light Monitor: Zero-Cross Detection

Part 4 in the “How to Make an Ambient Light Monitor” series


Projects Aug 16, 2015 by Robert Keim
How to Use MAX232 to Communicate Between a PIC and a PC

How to Use MAX232 to Communicate Between a PIC and a PC

This is one simple way to control a LED, fan, relay or solenoid with a computer and a PIC.


Using Interrupts on Arduino

Using Interrupts on Arduino

We've all been there - you've spent hours and hours trying to get that sketch working, but somehow, you're not reacting well to time critical events in your system. Maybe it's a wireless peripheral indicating when a packet is ready. Maybe it's an external Flash device signaling when data is ready to be read out. Maybe it's as simple as a button push that you need to react quickly to! But, try as you might, it seems the best way to see these sort of events is to just digitalRead() that pin over and over in your main loop() function until something interesting happens. ...or is it?


Build an Audio Detector

Build an Audio Detector

Detect audio with an electret microphone and a TI CC3200 Wifi microcontroller. This handy project will allow you to set up an audio detection device that can be used to catch your roommate stealing things from the fridge or send you an alert if the noise in your room goes above a certain threshold.


How to Use a DHT11 with a PIC16F628A and LCD

How to Use a DHT11 with a PIC16F628A and LCD

How to read humidity and temperature from a DHT11 and display it on a LCD with a PIC microcontroller. In this example we're going to use a PIC16F628A.


Fundamentals Of Quantum Computing

Fundamentals Of Quantum Computing

This article walks through the very basics of quantum computing and how they are designed. It will also provide accurate information about the principles behind quantum theory that helps quantum computing work. The objective is to help you understand this new age technology and its benefits.


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
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.


PICAXE Programming Basics - Part 1

PICAXE Programming Basics - Part 1

This article is part 1 of a two-part series that introduces the tools and techniques for programming PICAXE microcontrollers. Part 1 focuses on construction of a test circuit and the AXEpad IDE; part 2 will cover the PICAXE Editor 6 IDE.


What are Integrated Development Environments?

What are Integrated Development Environments?

Integrated Development Environments (IDEs) are software applications that provide a programming environment to streamline developing and debugging software programs.


An Intro to Multiplexing: Basis of Telecommunications

An Intro to Multiplexing: Basis of Telecommunications

Multiplexing was developed in the early 1870s, but it’s become much more applicable to digital telecommunications in the late 20th century. Today, frequency division multiplexing (FDM), time division multiplexing (TDM), and wavelength division multiplexing (WDM) have become an extremely important asset to telecommunication processes and has greatly improved the way that we transmit and receive independent signals over AM and FM radio, telephone lines, and optical fibers.


PICAXE to PC Connections

PICAXE to PC Connections

This article describes in detail the connections necessary for two way communications between PICAXE microcontrollers and personal computers. Both serial connections and USB to serial conversion connections are covered.


Electronics Design on Linux

Electronics Design on Linux

Interested in using Linux for your everyday tasks, but worried about compatibility? This article will provide a brief overview of the new tools available to you.


Introduction to KiCad on Ubuntu

Introduction to KiCad on Ubuntu

Learn how to install the new and improved KiCad on Ubuntu 15.04 and then build a simple microcontroller board to blink an RGB LED.


Introducing the PICAXE System

Introducing the PICAXE System

This introduction to the PICAXE microcontroller overviews the economical, versatile, and fun-to-use MCU family with which all designers should become familiar.


Ambient Light Monitor: Display Measurements on an LCD

Ambient Light Monitor: Display Measurements on an LCD

Learn how to use an EFM8 microcontroller to convert current and voltage measurements to digits that can be displayed on an LCD. We'll discuss a convenient way to report analog-to-digital conversion values that represent current and voltage amplitudes.


Projects Jul 26, 2015 by Robert Keim
How to Display an Image on an LCD using an EFM8 Microcontroller

How to Display an Image on an LCD using an EFM8 Microcontroller

Use the EFM8’s USB functionality to transfer an image from your PC to an LCD.


Projects Jul 24, 2015 by Robert Keim
How to Make an Interactive TCP Server with NodeMCU on the ESP8266

How to Make an Interactive TCP Server with NodeMCU on the ESP8266

Learn how to connect your device with Linux Screen using the built-in Lua interpreter to set up the file system and connect to the network. Then, learn how to automate the scripting process with Luatool and put it all together with a basic TCP server that can interact with a pulse-width modulated LED, a potentiometer, and a switch.


Projects Jul 22, 2015 by Patrick Lloyd
Guts of the IoT: Building NodeMCU from Source for the ESP8266

Guts of the IoT: Building NodeMCU from Source for the ESP8266

Compile and install NodeMCU on the ESP8266 IoT chip using Linux tools and the ESP Open Source SDK


Projects Jul 18, 2015 by Patrick Lloyd