From support2005 at dontronics.com Mon Apr 11 17:41:52 2005 From: support2005 at dontronics.com (Don McKenzie) Date: Mon Apr 11 17:42:16 2005 Subject: [SimmStick_Group] Micro-VGA Adapter. RS-232 DB-9 to VGA DB-15. Message-ID: <425AEF20.4030001@dontronics.com> New specs in pdf format have just been posted, and we hope to have the first units for sale in a few days. Yet to determine what units (open/closed-A&T) will be available first, but I will post further details when I am sure. Either way, people that have ordered in advance, will not have to wait long now. Don... ============================ Due Apr-2005 Micro-VGA Adapter. RS-232 DB-9 to VGA DB-15. New resolutions and modular format announced: - uVGA-128 : 128x64 (64 colours) due April 2005 - uVGA-256 : 256x200 (64 colours) due April 2005 - uVGA-320 : 320x240 (64 colours) due May 2005 - uVGA-640 : 640x480 (64/256 colours) due June 2005 - uVGA-800 : 800x600 (64/256 colours) due June 2005 The MicroVGA is a graphics adaptor that allows the display of text characters & an unlimited number of graphic patterns. The MicroVGA can be interfaced to any host micro controller, embedded device or a PC with a serial port. The 15 pin connector is simply connected to any standard VGA monitor. http://www.dontronics.com/micro-vga.html -- Don McKenzie E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics RS-232 to VGA. Many resolutions http://www.dontronics.com/micro-vga.html USB to RS232 Converter that works http://www.dontronics.com/usb_232.html From support2005 at dontronics.com Tue Apr 12 17:08:14 2005 From: support2005 at dontronics.com (Don McKenzie) Date: Tue Apr 12 17:08:33 2005 Subject: [SimmStick_Group] I have a project with a deadline in a few days. In-Reply-To: <425c376a.c7.39b5.8226@internode.on.net> References: <425c376a.c7.39b5.8226@internode.on.net> Message-ID: <425C38BE.9000006@dontronics.com> Sorry Connor, but I am not in a position to do this, however I have posted this message to my SimmStick group in my usual fashion, and any interested party can contact you directly. This method has proven successful on many previous occasions, good luck. Cheers Don... connor martin wrote: > > > ****** Forwarded Message Follows ******* > > > ------------------------------------------------------------------------ > > Subject: Sales Transactions *** ONLY *** - Via Email Contact Page From: > connor martin Date: Tue, 12 Apr 2005 15:45:30 -0400 > To: sales2005@dontronics.com > > To: sales2005@dontronics.com > > > Message sent via http://www.e-dotcom.com/ecp.php?un=Dontronics > > > Hi, I am in a bit of a fix. I have a project with a deadline in a few days. I > don't have time to learn coding in that length of time. I have attached it > below but the equations didn't come out. If you have an email address I will > resend it attached. The project basically involves subtraction, > multiplication, division, integration, high pass filtering Could you take a > look at the project and see what you think, in terms of a quote or timeframe, > or if you are busy yourself, could you recommend another person/s who could > code this project, any info would be greatly appreciated, Connor > > OVERVIEW > > I have a hardware design with 2 inputs > > 0.1 V P-P 100 Hz signal > > 1.0 V P-P 10 Hz signal > > There are 2 outputs from the hardware > > and > > These two signals are input to the Pic. There are 3 equations/algorithms > implemented. The eventual output from the Pic will be which will be > converted to analogue with an R2R network. > > Detail is a wave with a minus DC offset. I separated the DC offset and scaled > the remaining wave by 3 to get a better A-D resolution i.e. the amplitude is > multiplied by 3. So there are two components to , the minus DC offset and > the remaining scaled wave. The scaled wave once digitised needs to be divided > by 3 in amplitude and the minus DC offset needs to be added back to it. The 2 > components are as follows The DC offset is ?3.9V. Hopefully the Pic can > sample a minus DC value The remaining wave is a 4V P-P 20 Hz wave with a > 200Hz signal superimposed on it. This wave needs to be sampled at least at > 600 Hz. Once digitised the amplitude needs to be divided by 3 and the minus > DC offset added to it. > > is simpler. It is a 4V P-P 10 Hz wave with a 100Hz wave superimposed on it. > It needs to be sampled at least at 300Hz. > > Calculations > > Once the 2 signals are in digital format the calculations are as follows. The > calculations to be implemented in software are numbered 1 to 3. > > > Calculation 1 > > Where is just a name given to the result of the equation > > > By an equation given here this is also equal to ? > > > > High Pass filtering is needed here to remove is a 10 Hz signal > > Calculation 2 High Pass Filtering to remove A DSP algorithm is needed to > implement the high pass filtering > > > Then > > And can be calculated as follows: > > dt Calculation 3 > > The Pic chip I am using is the 16F877A. I need the code in assembler. I am > using an R2R ladder network to covert the final value to analogue. Could you > include the pin out of the final result. > > > Thanks, Connor. > > -- Don McKenzie E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics RS-232 to VGA. Many resolutions http://www.dontronics.com/micro-vga.html USB to RS232 Converter that works http://www.dontronics.com/usb_232.html From support2005 at dontronics.com Wed Apr 13 03:56:55 2005 From: support2005 at dontronics.com (Don McKenzie) Date: Wed Apr 13 04:08:51 2005 Subject: [SimmStick_Group] 4D Systems On Screen Display Message-ID: <425CD0C7.4080400@dontronics.com> Advance Information only. At this stage, this product has been put here to judge if it is worth going ahead and manufacturing some of these units for sales. 4D Systems On Screen Display http://www.dontronics.com/4d_osd.html Don... -- Don McKenzie E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics RS-232 to VGA. Many resolutions http://www.dontronics.com/micro-vga.html USB to RS232 Converter that works http://www.dontronics.com/usb_232.html From support2005 at dontronics.com Wed Apr 20 02:04:20 2005 From: support2005 at dontronics.com (Don McKenzie) Date: Wed Apr 20 02:04:28 2005 Subject: [SimmStick_Group] Micro-VGA Adapter. RS-232 DB-9 to VGA DB-15 Message-ID: <4265F0E4.6090405@dontronics.com> After one or two minor hickups, the uVGA units are now shipping. People that have ordered in advance, have packages on the way now. In stock we have: uVGA-UB1 OEM base board uVGA-256-Core uVGA 256x200 core uVGA-256+uVGA-UB1 uVGA 256x200 core and OEM base board uVGA-256-RS232 256x200 core with enclosed case, RS-232 Input, assembled http://www.dontronics.com/micro-vga.html and don't forget to visit: 4D Systems On Screen Display http://www.dontronics.com/4d_osd.html Don... -- Don McKenzie E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics RS-232 to VGA. Many resolutions http://www.dontronics.com/micro-vga.html USB to RS232 Converter that works http://www.dontronics.com/usb_232.html From support2005 at dontronics.com Mon Apr 25 22:07:26 2005 From: support2005 at dontronics.com (Don McKenzie) Date: Mon Apr 25 22:07:45 2005 Subject: [SimmStick_Group] a Multi-Function-Development (uVGA-MFD) board Message-ID: <426DA25E.3020702@dontronics.com> Atilla just posted a message to the uVGA BBS, however as this list is in it's infancy, I felt it could have more relevance on this BBS at this point. His message is below: Cheers Don... ========================================= We are currently designing a Multi-Function-Development (uVGA-MFD) board for the microVGA. It will include the following interfaces: PS/2 Mouse, PS/2 Keyboard, RS232 DB9, 15pin VGA, 2 x Joystick, Homebrew Games Paddles (4pins), 20pin uVGA Core header and several I/O for external use. The MFD will be based on the powerful PIC18F6520 running at 10MIPs 40Mhz. There will be a range of downloadable software such as games, control, measurement, security and various other applications. Any suggestions before the design is finalised (by 30/04/05) is welcomed. Atilla Aknar 4D Systems Pty. Ltd. -- Don McKenzie E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics RS-232 to VGA. Many resolutions http://www.dontronics.com/micro-vga.html USB to RS232 Converter that works http://www.dontronics.com/usb_232.html