Launch Node-Red On Startup With a Batch File
Node Red command prompt

I want Node-Red to start up (and other command line programs) when Windows 10 starts. Batch files are a simple way to achieve this.

One feature, bad or good, is the batch file will open a command prompt window that essentially acts like a live log viewer for node-red. This is fine for my application because I have a PC dedicated running 24-7 for a camera video server, MQTT server, and now Node-Red. I like being able to see what Node-Red is doing, if you want Node-Red to run in the background as a service you will want to use a different method.

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Custom Cortana MQTT Commands
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image Cortana can easily be extended to aid you with your DIY home automaton projects. In this example Cortana sends MQTT commands to open and close a garage door as well as ring the doorbell with custom jingles. By the way, you don’t have to use MQTT, you can also do a whole lot of other things as well from opening a file, opening a program, or launching your favorite websites.

As of the writing of this entry I am frantically trying to finish documenting the MQTT Doorbell and Garage Door Opener devices in separate posts. Hopefully I can get those whipped out in a few days.
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DIY BUBBLE OVERKILL!!!

Homemade  bubble machine complete with variable speed bubble wand, variable speed fan. PID loop controlled heaters to heat the air to give the bubbles more lift.

Parts:

  • 150W PC power supply
  • Fan: NIDEC BetaV M# 35291-35 2.3A
  • EZ HEat 300W band heater 1.5”
  • PID controller REX-C100
  • 12 Volt gear motor from Tokyo Micro
  • Fotek Solid State Relay SSR-25DA

Here is the 3d printer file for the bubble wand holder…

TI LaunchPad MQTT I/O Demo
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This demo connects two TI LaunchPad devices together using MQTT. I have every intention to add other devices to the mix like Arduino, Netduino, RaspBerry Pi, and BeagleBone in the future.

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HC-21 Simple Wifi Serial for Arduino Tutorial
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The Simple Wi-Fi HC-21 module is a meager $10-$15 bucks on ebay right now. It is a simple Wi-Fi serial port server or virtual serial port. This means it is self contained and will handleimage all the overhead of negotiating a Wi-Fi connection and communication leaving more room for your application in the Arduino.

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Windows 10, Should I get it?
Windows 10 Tech Preview2

Windows 10 (Threshold, Technical Preview)

Microsoft released a “Technical Preview” of their new upcoming version of Windows operating system on October 1, 2014. This version of Windows will be named Windows 10. Here is a brief review that should help the average users decide if Windows 10 is for them. Keep in mind a lot could happen between now and mid 2015 when windows 10 is released.Windows 10 Tech Preview2

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Arduino error: expected unqualified-id before numeric constant
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error: expected unqualified-id before numeric constant

This Arduino IDE error blew my mind for a while, come to find out it can be caused from syntax errors. look for a missing semi colon or accidental text at the top of your sketch.

The Error

Thermostat1:1: error: expected unqualified-id before numeric constant
In file included from Thermostat1.ino:9: Read More…

DIY Arduino Mini BMO
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Arduino Mini BMO

BMO from Comedy Central’s Adventure Time is adorable, if only someone would make one that can walk! Atleast we can make one with a personality. Here is a build using easy to get parts including Arduino Pro Mini, Nokia 3310 LCD screen, audio playback, accelerometers, and distance sensors.  Read More…

X10 Control Using Arduino, Modbus, and ScadaBR
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X10 Lighting and appliance modules are cheap on Ebay, I wanted to control them with my HMI (ScadaBR) so I put a X10 and Modbus library together in an  Arduino to turn on and off the modules.

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How To Scale A Thermistor for An Arduino
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Thermistors And Your Microcontroller

A thermistor is a simple temperature component, basically it is a variable resistor that the resistance changes in it depending on the temperature. Such a simple device needs a few more components and scaling in the microcontroller to give the desired C or F temperature reading.

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