This idea started when I was
handsoldering some protoboard to make my second Attiny programmerboard
that fits onto an Arduino. Then a major brainfart struck. Why do i need
to buy an expensive Arduino to play with my Attiny's? I guess you dont.
Why do i need to pop my Attiny chip into the programmer to refresh the
firmware on it every time? Why don't i just make a board that Attiny
fits into that i can program directly and just plug in my shields or
just hook it to the protoboard real quick? Why not make it smaller?
A few ideas on the outline of the new boarddesigns follow:
- The design is so simple that anyone with a very basic set of
tools and some vero/protoboard will be able to make it from scratch,
both the programmer and the shields.
- Think modular, all the way.
- The pinouts will fit any 100mil pitched protoboard.
- Making your own shields will be far simpler than making a shield for
an Arduino.
- Since PCB etching and manufacturing is not for everyone, all you need
to build and explore/expand should be more protoboard and some
headerpins.
- Smallest possible outline(at least for the X5) allows you to make far
smaller builds and use less protoboard and space.
- All pins of the chips are accessible from all the shields stacked on
top or underneath.
- This way you can have different shields with different
components/sensors combined for different
applications/prototypes/buildingkits, suitable for classrooms etc.
- Stackable PCB's will fit in different types of spaces than "2D"
boards.
I want this standard to really only
cover 2 boards/shields and their connection with other shields.
Lets call them
the X5 and the X4.
The X5 board supports the Attiny 13/25/45/85 and the X4 supports Attiny
24/44/84.
X5:
- No outline defined.
- Pinhole pitch X and Y is 100mil or 2.54mm.
- Outer pinhole row and columncount is 4x6. (Attiny 13/25/45/85 pdip
package cover 4x4 holes in a 100mil pitched board.)
- The Attiny or its pdip socket sits in the center of this board.
- Two 4pin headers sits directly next to the pins of the Attiny
25/45/85.
X4:
- No outline defined.
- Pinhole pitch X and Y is 100mil or 2.54mm.
- Outer pinhole row and columncount is 8x8. (Attiny 24/44/84
pdip package cover 8x4 holes in a 100mil pitched board.)
- The Attiny or its pdip socket sits in the center of this board.
- Two 8pin headers sits on the edges of the 8x8 hole board allowing a
short track from every pin to the header.
That is for now the entire standard. Go play with it! ... oh.. wait..
you need a programmer?
Thats why i made the X45, connects to either an Arduino or an in
circuit programmer.
If you do not need the Arduinosupport thers is the ISP45.
The files/layout are totally open source, do whatever you like with
them, if you do something cool shoot me an e-mail.
Even shoot me an e-mail with a picture if you make it by hand;)
Well, since i am kind of lazy i have gotten a few of these manufactured,
it was kind of expensive but if you shoot me an e-mail i might have
some left for sale, with headerpins. etc etc.
There is more pending designs waiting to end up in the downloads
section.
This programmerboard is not covered by the standard, but I made it as simple as possible to copy or handcraft using standard protoboard. The X45 will connect either to your Arduino or a 6pin ISP connector. If you do not feel like crafting this board for hand you can always head over to the downloads-section and grab the gerberfiles for manufacturing or you can order a complete X45 PCB kit directly from me.
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