|This is an early announcement of an AVR microcontroller-based monophonic synthesizer project. It uses a microcontroller as a combined tone generator, envelope controller, filter controller, and MIDI controller. Having the microcontroller do ALL THAT WORK saves a lot on overall component cost, while in many ways simplifying the design. More info on the project's web page.|
|SFT Power Supply||A prototype switching 'bench' power supply, providing 4 different voltage outputs, and controlled using a single microcontroller. An LCD display continuously displays output voltages, and also indicates the voltage setting when one of the 3 voltage setting knobs is changed. More info on the project's web page.|
|SFT Component Tester||Another prototype device that uses an AVR microcontroller to perform various tests on an 'unknown' electronic component, identifying the component and its value, and whether or not it is 'good', using an LCD display. A recent change to the design (to improve consistency for higher impedence measurements) will require software updates and extensive testing. This device was primarily used for testing various proofs of concept, including the development of the 'base' calibration program and serial port communications functions used by other AVR-based devices.|
|X11workbench||A pre-alpha native X11 project featuring a lightweight GUI toolkit. It is intended
to (eventually) become an integrated development environment, similar to Microsoft's Visual Studio (but without the cruft).
Again, more info on the SourceForge project web page.
|The use of microcontrollers in place of discrete components or custom logic chips, or even specialized devices that might actually COST MORE than a microcontroller. The software is a fixed cost, so B.O.M. cost can be much lower, leading to lower prices or higher profit margins.|
'Top Level Packages'
|Whenever I update the ports on FreeBSD, which typically must be BUILT FROM SOURCE, I find a LOT of problems if I attempt to leave things installed and just upgrade the changes. To facilitate a 'clean re-install' I developed a script that uses a similar technique to 'BOM leveling' typically used by an MRP process.|
|Network Devices||A review of a couple of very useful and highly available networking devices that are both compatible with microcontrollers. It could help you 'Wifi' and/or 'Ethernet' your next microcontroller-based project|
|Making Gnome 3 Usable||There appears to be a current trend by software makers to change the way we use our computers, whether
we like it or not. Gnome version 3 and Microsoft Windows™ 8 both
exhibit this, in my view. But for gnome desktop users, I have provided some INSTRUCTIONS on how to get
back MOST of the functionality and appearance of your familiar Gnome 2 desktop, with a bit of tongue-in-cheek.
It's worth pointing out that the MATE desktop retains all of the old Gnome 2 functionality, with packages and installation instructions for many of the more popular Linux distributions, and source for everythign else. And several OS distributions have already included the MATE packages within their own repository.
|Computing Trends||A set of articles on Computing and Internet Trends, multi-threading and SMP, and the failure of the '.Net' initiative (more to come)|
|Windows to UNIX||Converting a network with a Windows Server to a UNIX or Linux Server|
|Data Encryption Methods||A discussion of methods used to encrypt data|
|Using Interix||Helpful information regarding Microsoft's POSIX subsystem.|
|Windows vs UNIX/Linux||The debate continues! UNIX/Linux vs Microsoft Windows(tm) Operating Systems|
|M.R.P. III||The definition for M.R.P. III, an evolutionary change in M.R.P.|
|M.R.P. Simulation||An effective inventory modeling tool for E.C.O.'s and end-of-life products|
|Bandwidth Management||Information on BANDWIDTH MANAGEMENT|
|Forecast Accuracy||Information on improving sales forecast accuracy|
|Mechanical Forecasts||A discussion of computer-generated forecasts based on statistical models|
|XMODEM library||A generic open source XMODEM library, written with microcontrollers in mind, and suitable for use with POSIX-compatible (Linux, BSD) and Arduino (and compatible) devices|
for the Arduino Uno
|A USB to serial driver for the Arduino Uno for FreeBSD, as a kernel module 'uarduno'. This corrects some of the issues regarding USB device identifiers for various Arduino devices under FreeBSD, as well as giving you the capability of adding your own manufacturer/device identifier pairs (if needed)|
|DEC's PDP-11||When I was in High School I first learned how to program on a PDP-11 using 'mark sense' cards. Later at SJSU I became familiar with more detailed aspects of RT-11 and RSTS/E, writing various programs in BASIC, FORTRAN, and 'MACRO-11' assembly language. These old computers really were on the bleeding edge in a lot of respects, from the ability to add custom hardware (and write custom drivers), and 'complex instruction set' CPUs (making assembly language much less tedious), to being a major platform upon which the 'C' language and UNIX were developed. We owe at least a little respect for our 'computer roots' with the PDP-11, for helping to get us where we are today.|
Stewart~Frazier Tools, Inc. is a software development and consulting
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improve productivity, with special emphasis on manufacturing industries,
networking, embedded devices, and improving process quality for
Manufacturing Planning through accurate Demand Forecasting.
For more information about S.F.T. Inc., press HERE.
|Bob Frazier||E-Mail: BobF (at) mrp3 (dot) com|
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