Sunday, May 4, 2008, 07:04 PMWell, it's not really an update on progress, but only to inform the impatient I'm still waiting for some main components for the prototype ;)
I was hoping I would have received them already, but it was hard to find out what programming kit I needed to order; I hope I'm waiting for the right one to arrive now... This kit includes the latest USB programmer from Silabs, and should also include the IDE wìth assembler.
I have absolutely no idea why the online free IDE from Silabs does not include the assembler...
Here's a teaser of the soldered Silabs microcontroller on a prototype PCB ;) :
Friday, April 18, 2008, 01:45 PMWell, the Silabs microcontroller for the prototype has arrived (lovely service of Mouser.com, shipping only 3 different chips without complaining about the order quantity).
I also ordered an adapter board to solder the microcontroller onto, so I can use the chip on an experiment board.
Yesterday I got my hands on an eBay auction for a Silabs development kit for a nice price, so I'm almost ready to build the prototype.
To awnser some questions to the replies on my earlier posts: this project is based on an entirely different microcontroller than the one used on the Kempston Mouse Turbo.
That means it's a real lot work to combine the two interfaces in one microcontroller.
But it should be possible to integrate both onto one final interface. But if anyone is interested in such I doubt; all of you who are interested in this project will probably already have a Kempston Mouse Turbo interface.
I'm thinking of developing the final PC keyboard interface on a very small PCB, that is flat on your desk (not upstraight), so another interface can be connected to it directly, something like this:
That way costs will stay very low, and assembling will not take too much time.
Saturday, April 12, 2008, 07:47 AMThe first auction was a succes, so here's a new one:
Enter this number on your local eBay site.
This auction does not include the free optical scroll mouse, because I don't have any more!
Friday, April 11, 2008, 12:58 PMI updated the Quick Reference Manual for the Kempston Mouse Turbo with information of how to use the Extra Mode.
Here's the link of the PDF.
Wednesday, April 2, 2008, 02:05 PMI've started a new project with a Spanish developer, for a PC keyboard interface that is fully compatible with all modern PC keyboards and is also fully transparent with all Spectrum keyboard functions.
The interface will consist only of a single chip, a Silicon Labs microcontroller.
It will have a PS/2 connector, but you can use usb keyboards with a converter.
The Spanish guy already has a prototype working, and I already ordered the parts for my prototype.
Because of the simplicity I expect the period from now till the final production to take only some weeks, maybe two months.
Price will be around 35 euro, so a lot cheaper than the Proface AT (69 euro at Sintech).