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An ATMega328-based Data Acquisition System

An ATMega328-based Data Acquisition System

In this article I will show you how to use the internal EEPROM of an ATMega 328P microcontroller. I will use a USB-to-serial converter, and an LM35 temperature sensor. I will also give you some tips and tricks when designing a PCB.


Communicate with Your Arduino Through Android

Communicate with Your Arduino Through Android

Want to send text to an Arduino with an Android smartphone? Here's how! This article will show how an Arduino (or almost any other microcontroller) can "talk" with your smartphone, sending and receiving text in both directions.


How To Build A Thermostat with a PICAXE

How To Build A Thermostat with a PICAXE

An inexpensive PICAXE microcontroller makes it easy to read a temperature sensor, compare the temperature to a setpoint, and turn a heater or cooler circuit on or off.


Make an LED Light Strip AHRS with Arduino and MPU-6050

Make an LED Light Strip AHRS with Arduino and MPU-6050

Use a WS2812 RGB LED strip to visualize the pose of an MPU-6050 6-degree-of-freedom IMU in three dimensional space.


Projects Oct 13, 2015 by Patrick Lloyd
Hack a Mousetrap with a 433MHz RF Module

Hack a Mousetrap with a 433MHz RF Module

You can buy cheap 433MHz RF modules from Mouser and DigiKey. This article will show you how to use them with a PICAXE microcontroller to hack your own mousetraps.


Raspberry Pi Project: Control a DC Fan

Raspberry Pi Project: Control a DC Fan

Control a fan based on the current temperature with a Raspberry Pi!


Make a BLE Temperature Sensor with the nRF51

Make a BLE Temperature Sensor with the nRF51

This article demonstrates how to use the built-in die temperature sensor on the nRF51. The die temperature is not the same as ambient temperature, but can be calibrated to ambient temperature by using a correction factor.


An Introduction to Freescale’s Kinetis Design Studio

An Introduction to Freescale’s Kinetis Design Studio

Jump start your embedded projects with Freescale's new software platform!


Projects Oct 04, 2015 by Nash Reilly
How to Build a Real-Time Clock with a PICAXE

How to Build a Real-Time Clock with a PICAXE

Teaming up a PICAXE µC, a DS1307 real time clock module, and an LCD117 serial adapter with a liquid crystal display is a fun, educational way to assemble your own date and time demo.


How to Build a Web-based Garage Door Controller

How to Build a Web-based Garage Door Controller

Use your Android device to open and close your garage door! Much better than that clunky remote you've been using.


Light Bar “Relative Comfort” Thermometer with NodeMCU

Light Bar “Relative Comfort” Thermometer with NodeMCU

Create a wireless "relative comfort" light bar thermometer by broadcasting temperature data across multiple ESP8266 modules running NodeMCU using MQTT.


Projects Sep 28, 2015 by Patrick Lloyd
How to Add Bluetooth to a Ceiling Fan

How to Add Bluetooth to a Ceiling Fan

How to add BLE capabilities to a wireless ceiling fan by incorporating the nRF51 in the remote control. Part of our series on the nRF51.


Introduction to FreeRTOS on the nRF51

Introduction to FreeRTOS on the nRF51

This article demonstrates porting FreeRTOS to the nRF51 with a softdevice so you can use an RTOS with the BLE functionality.


Arduino Motor Shield Tutorial

Arduino Motor Shield Tutorial

A tutorial for the Arduino Motor Shield with a simple project. The motor shield has quite a few features such as current measuring and the ability to drive a single stepper motor.


Projects Sep 23, 2015 by Alex Udanis
Using a Serial LCD with a PICAXE

Using a Serial LCD with a PICAXE

Using an LCD increases the versatility of any microcontroller by displaying data outputs and memory contents. This serial adapter uses only one I/O.


How to Use RTC with Arduino and LCD

How to Use RTC with Arduino and LCD

This article will show you one way of making an accurate clock by using the Real Time Clock IC DS1307. The time will be shown on a LCD display.


BLE using nRF51: Creating a BLE Peripheral

BLE using nRF51: Creating a BLE Peripheral

How to create a custom BLE GATT peripheral using the nRF51 by creating a service and characteristics.


How to Communicate with a Custom BLE using an Android App

How to Communicate with a Custom BLE using an Android App

Learn how to communicate with a custom BLE peripheral using an Android device.


An LCD for Your Microcontroller Using a Single I/O

An LCD for Your Microcontroller Using a Single I/O

LCDs are great for showing info from your microcontroller. A serial adapter is inexpensive, uses only one I/O, and is easy to connect and to use.


EFM8 Sound Synthesizer: Playing Melodies via USB

EFM8 Sound Synthesizer: Playing Melodies via USB

Part 3 in the “How to Make an EFM8-Based Sound Synthesizer” series.


Projects Sep 17, 2015 by Robert Keim