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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.


The New Wireless Thread Network Protocol

The New Wireless Thread Network Protocol

Thread, a network protocol released July 2015, is optimized for the connected home network. It is IPv6 based, uses IEEE Standard 802.15.4 and runs on existing hardware.


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.


Introduction to the MQTT Protocol on NodeMCU

Introduction to the MQTT Protocol on NodeMCU

MQ Telemetry Transport (MQTT) is a popular low-overhead messaging protocol used by many IoT devices to communicate. This tutorial will show the user how to to set up a basic MQTT network using Python on his or her computer and an ESP8266 running the NodeMCU firmware.


Projects Sep 15, 2015 by Patrick Lloyd
BLE using nRF51: ARM-GCC Build Environment

BLE using nRF51: ARM-GCC Build Environment

How to set up the build environment for the nRF51 system-on-chip using makefiles and ARM-GCC.


Upgrade Your Power Wheels with Motor Control Basics

Upgrade Your Power Wheels with Motor Control Basics

Adding variable speed control and battery monitoring to a Power Wheels truck!


An Introduction to the Wunderbar

An Introduction to the Wunderbar

Learn how to set up the Wunderbar platform to begin building your own IoT apps. This will demonstrate the "Can't Touch This" and "Tell Me When" demo applications to measure WunderBar sensors and perform actions based on them. Some of the major bugs are discussed.


Projects Aug 29, 2015 by Patrick Lloyd
Getting Started with PSoC®

Getting Started with PSoC®

Getting started with PSoC®, the Programmable-System-on-Chip by Cypress Semiconductor for developing and testing embedded systems.


FSK Explained with Python

FSK Explained with Python

This article will go into a bit of the background of FSK and demonstrate writing a simulator in Python.


Make an Automatic Water Softener Reporter

Make an Automatic Water Softener Reporter

Create a smart home by displaying the current salt level of your water softener with the CC3200 and a proximity sensor.


PICAXE Programming Basics - Part 2

PICAXE Programming Basics - Part 2

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


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.


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.


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.


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
Estimating Wireless Range

Estimating Wireless Range

How to estimate wireless communication range from radio parameters.


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