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 handle all the overhead of negotiating a Wi-Fi connection and communication leaving more room for your application in the Arduino.
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.
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.
Thermostat1:1: error: expected unqualified-id before numeric constant
In file included from Thermostat1.ino:9: Continue reading
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. Continue reading
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.
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.
A Programmable Logic Controller, PLC or Programmable Controller is a digital computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or light fixtures. PLCs are used in many industries and machines. http://en.wikipedia.org/wiki/Programmable_logic_controller
A HMI (Human Machine Interface) is the system by which people can interact with a machine. The user interface includes hardware (physical) and software (logical) components.
Here are some 3D printer accessories and modifications I couldn’t live without.
Here is a nice looking filament spool holder to go with my Kossel Mini 3D printer. It uses printed parts and 15x15mm Mitsumi extruded aluminum. The rod is 8mm or 5/16 diameter. You can make this holder as large as you want. Continue reading