I have all the parts from Digikey(arrived yesterday) and I'm working on a layout of the board. I'll start soldering tonight. I don't have the STK500 or any of...
Programmed a chip tonight with the ISP cable I mentioned and ponyprog from www.lancos.com. Had to reboot after plugging the programmer into the parallel port...
At 2:45 AM it already is tomorrow, John ;-) I should look it up but if you have it handy are any of the 5 pins you're bringing out for in-circuit programming...
Welcome indeed and I think I've finally deduced how to adjust the settings on this yahoo group thing. Hopefully anyone can now post without having to join...
John McKown
john_mckown@...
Dec 16, 2002 6:51 pm
6
Does any one have an estimated cost for one of these? I would need to make/build a programmer, and buy all the chips. Not including the cost of the actual...
... Well, I think the purchasable electronic parts will come to something like $40 plus the programmer. That allows about $7 to fab a perf board or buy 1/9th...
I've corrected wrong PS/2 connector pin numbers on the schematic in the zip file downloadable at chordite.com. The correct pins are (hopefully) clock ---- pin...
Nope, not too much jargon, thanks for giving me that estimate. If i got a programmer I would build it, as i believe that would be cheaper... Thanks for that...
Definitely cheaper to build it yourself. Programming the chip with the programming cable on http://freespace.virgin.net/seant.ellis/avreval.htm worked for me....
I'm a little technically retarded. I'm having a bit of an issue with connecting the cables to the Rocker Switches. Take for example the red wire off the...
Tom <magical_yak@...>
magical_yak@...
Dec 19, 2002 1:09 am
13
... example ... are ... close ... of ... ===== The switch terminals you want are marked (something like) NO for normally open and C for common. They're...
... circuit. ... NO's ... zip ... also a ... Absolutly. Thank you, I'll give it a go this weekend. I wasn't so sure on the grounding part. This is more my...
From the other builders out there, do you find the switches he used work? During finals, someone threw a keybaord out of a window, and i managed to get some...
Finally got back to this project. Connected up all the components for the keyboard, but it didn't work. Removed all the connections for the programmer; still...
Found some incorrectly connected wires. Corrected them. That wasn't it. Tested the pins with a continuity tester. They are fine. That wasn't it. I guess...
IT WORKS! I guess the next step is to add the programming components back in and see if the programmer and the keyboard can coexist peacefully. I'll post again...
Added back in the programming components. The keyboard still works, but I can't get ponyprog to write to or read from the device. Once I figure out which...
Finally, I have the in-system-programmer ( http://freespace.virgin.net/seant.ellis/images/ponyprog_sch.png ) working with the keyboard. By cutting the...
... 6 ... the ... for ... shack ... ============== So it looks like the 4.3K (or 4.7K) pull-up resistor required on the PS/2 data line interfers with...
John, I'm confused about exactly where the two AA cells are. Maybe the drop across the diode somehowe reconciles the +5v from the port with the +3v from the...
I only connect the two AAs during programming. I connect them at the capacitor. Programming works without the led. Also, I realize now that my past two posts...
The switches listed in John McKown's chordite parts list(Digikey SW343-ND) are really great. I was originally planning to try some pushbutton switches I had...
If you are want to look at these switches before buying, you can go to radio shack and check out part #275-017A. These radio shack switches are almost...
Currently, I'm experimenting with mounting the switches. I've made several trips to Radio Shack, Orchard Supply Hardware and Home Depot looking for materials...
Check out the "minibox" project here: http://w1.132.telia.com/~u13205992/buttonbox/index.htm It looks like the author has written code for the Atmel that lets ...
Good idea. One thing I should probably say here is that, IMHO, it's very important to select the switches and key caps carefully. There is a huge difference...
This updates and replaces a previous note. Here are _two_ approaches to adjustability, offered not as serious designs but merely as an argument that...
Here are 2 adjustable strategies I've been considering: 1) Telescoping arms. 2 thin tubes(one slightly thinner than the other) and a tiny clamp(to freeze the...
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