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Author Topic: ATtiny85duino - Tiny85 development board  (Read 3258 times)
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Valencia, Spain
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Last month I designed my first custom PCBs using a program called "Fritzing" and ordered a small batch of them from an online service. You can order really small quantities, I ordered six each of Tiny84 development board, Tiny85 development board and a bunch of tiny boards to put into some Tiny85-based gadgets I've got planned.

The boards arrived last week...


I just got all the parts together to build up one of the Tiny85 development boards, so here it is: The Tiny85duino!



I built the first board in no time. You don't realize how much time you spend cutting up bits of wire, stripping them, tinning them and soldering them until you don't have to do it any more.

It all worked perfectly, here it is blinking its very first LED.



While I was building it I spotted a couple of ways I could improve it, mostly through better labeling of the parts. The labels didn't come out very well because I had to use a very small font to get the text on the board (the PCB is tiny - only 26x17mm, 1 inch x 5/8ths of an inch). I also realized the most logical way to use the device on the table was upside down to the way I designed it.

I don't think I'd change much apart from the labeling though. I had no problems fitting the components apart from the ceramic capacitor which had its legs too far apart (I had to straighten them to get it to fit - no big deal).
« Last Edit: February 11, 2013, 06:10:20 am by fungus » Logged

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Very cool. What service did you use?
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Valencia, Spain
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Very cool. What service did you use?

OSH Park. I liked the purple/gold combination (although in real life it's not as purple as I hoped it would be...)


« Last Edit: February 11, 2013, 03:17:17 am by fungus » Logged

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To make it more purple, put a copper pour / ground plane on it. The copper reflects the light through the purple making it much more striking.

The FR4 substrate is a slightly yellow color, which dulls the purple.
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Quote
The Tiny85duino

How cool is that? How can I get a couple of blank PCBs?
Now that my 'Bobuino' 644P/1284P board is running I need a new target chip to play with.

Lefty
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Should sell them on Tindie, I bet they'd be popular. smiley I love the ATTiny chips, so versatile, and CHEAP. smiley
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Brian from Tacoma, WA
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Valencia, Spain
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I guess I could spare a couple of boards. The price would be $3 each plus postage.

If anybody's interested, send me a PM...
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Awesome!
An really cool project!
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Just to show off my ATtiny85 board I got from fungus in the mail yesterday. Got it blinking today!

Using a USBtiny programmer and used the hardware files from:

http://code.google.com/p/arduino-tiny/

Everything worked first shot, no problems uploading the blink program. More testing to follow, but to be
honest it was almost too easy to be a challenge.  smiley-grin

Lefty


* ATtiny85.JPG (54.89 KB, 640x480 - viewed 96 times.)
« Last Edit: February 20, 2013, 07:56:09 pm by retrolefty » Logged

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Everything worked first shot, no problems uploading the blink program. More testing to follow, but to be
honest it was almost too easy to be a challenge.  smiley-grin

Happy to help!

« Last Edit: February 22, 2013, 12:57:23 pm by fungus » Logged

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Would you be willing to share your files so I can make my own boards?
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very cool indeed!
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Valencia, Spain
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Would you be willing to share your files so I can make my own boards?

I think I'm going to keep control of them for the moment.

(it's not exactly a difficult circuit to reproduce though...)
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very cool indeed!

Thanks!
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Would you be willing to share your files so I can make my own boards?

I think I'm going to keep control of them for the moment.

(it's not exactly a difficult circuit to reproduce though...)


Ok.  I just didn't want to waste time reinventing the wheel.  I'm not an expert at Eagle so it takes me longer to crank something out.  Thanks for the inspiration though.
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