diff --git a/README.md b/README.md new file mode 100644 index 0000000..5d9b319 --- /dev/null +++ b/README.md @@ -0,0 +1,56 @@ +KaBoard +======= + +What is kaboard ? +----------------- + +Kaboard is a development board for Atmega8 or Atmega328 microcontrollers. +It was designed for small one of projects or prototypes. + +It's main features are : + * Onboard LM1117 voltage regulator providing 5v with 800mA + * All mcu pins broken out on pin headers + * Vcc and GND pins near every mcu pin, usefull for supplying power to peripherials or for pullups or pulldowns + * ft232rl serial to USB konverter + +The components on the board were selected mostly, because they are cheap and easily obtianable at my local distributor. +One exception is the ft232rl. +Many fellow hackers told me, that an Atmega with integrated USB would be cheaper and could be used for more then just RS232 over USB. +I decided to stick with the ft232rl for 2 reasons : + * It's easy to use a serial bootloader like optiboot, that doesn't eat up much flash, for programming. + There is even the possibility to use the a pin of the ft232 to reset the mcu, + so even with a crashed programm you can switch to the bootlaoder, without pressing buttons on the board. + + * Whenever I used usb so far I needed a simple way to exchange a few bytes between a mcu and a computer. + Emulated RS232 is usually sufficiant for this. + I've allready looked into the LUFA USB stack and I've played with usb on the stellaris launchpad. + Afterall I've come to the conclusion, that an extra chip like the ft232 provides a more selfcontained + and also easier to use implementation for RS232 over usb. + Also I learned the hard way with my steallaris launchpad, that a usb can be a real pain in the ass when it comes to debugging it. + + +What the !/%ยง)"" does KaBoard mean ? +------------------------------------ +The name is actually inteded to be pun for german readers. +"Kaputt" is german for broken (or as dict.leo.org told me for kaput). +In the palatinate dialect this word pronouced rather "Kabutt" or even "Kabudd", +which sound similar to KaBoard. + + +Licenses +-------- +Anything in the folder libs/smisitoto_eu/ is taken from http://smisioto.no-ip.org/elettronica/kicad/kicad-en.htm +The files are made avaible under the Creative Commons license rev2.5 Attribution-ShareAlike. (see https://creativecommons.org/licenses/by-sa/2.5/) +Also I'd like to thank Walter for his footprints and 3d models here, they've been of great help in my hobby projects. + +The scale.pl script (libs/scale.pl) which was used to create the Kicadfiles for the KaBoard logo, can be found in this zip-archive:http://oshwlogo.com/logos/OSHW_logo_KiCad_scalable.zip +All credits for this nice little script go to Robert Spitzenpfeil http://blog.spitzenpfeil.org/wordpress/ + +The anything else in the project folder, like the board layout, the schmeatics and the KaBoard logo, are published under Attribution-ShareAlike 3.0 (see https://creativecommons.org/licenses/by-sa/3.0/) + + + + + + +