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Topic: Cheap small self contained microprocessor (Read 12519 times) previous topic - next topic

fungus


I wanted to buy one of these:

http://shop.evilmadscientist.com/productsmenu/tinykitlist/652

But I'm not paying $40 shipping for a $35 order. :(


To be fair...that *is* huge.
Advanced Arduino

nickgammon

Please post technical questions on the forum, not by personal message. Thanks!

More info: http://www.gammon.com.au/electronics

nickgammon

Anyway, I ordered one. I thought it would be fun to have. :)
Please post technical questions on the forum, not by personal message. Thanks!

More info: http://www.gammon.com.au/electronics

MichaelMeissner

Ok, I decided to go with the following vendor for 10 ATtiny85's at $13.93 (US).  Sure I may have been able to find an even better deal with more searching, but it should get here with plenty of time for me to rig up a programmer, figure on a mounting and power solution, and settle what I want the thing to do.  In terms of timeline, I need one done by the last week in November, as we typically celebrate Christmas early with my in-laws shortly after US Thanksgiving before they head down to Florida for the winter.  For the rest, my wife likes to get the shipping done for the other relatives by the 1st week in December.  http://www.ebay.com/itm/190938100394?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649.

Thanks everybody.

MichaelMeissner

BTW, in looking around for programmers, I found the following programmer on tindie.com that plugs directly into the UNO's pins and provides a capacitor so that you can easily change your Uno to be a programmer, and then back if you put the normal Uno stuff on a breakout shield: https://www.tindie.com/products/rwinscot/attiny-85-programmer/

The same seller also has a pcb board that would allow you to quickly reprogram an ATtiny85 using a 6 pin or 10 pin hardware programmer (you would need a dip-8 socket to hold the ATtiny85): https://www.tindie.com/products/rwinscot/isp-to-dip-adapter/.

Neither is 'necessary' in that you can always just attach wires, but it looks like it would simplify the setup for the occasional use.  I just ordered both of them.

Docedison

#35
Oct 29, 2013, 06:34 pm Last Edit: Oct 29, 2013, 06:39 pm by Docedison Reason: 1
"I" used the Adafruit programming shield... and rewired the zif socket to program XX13's and 85's. I also wired the ISP connector so I could plug it into any other ISP connector to reprogram any other "IDE recognised" chip... It works a treat especially with a socket board I bought from Alex @ inside gadgets for this board Item no.ATPA-PCB... 5 sockets wired to the ISP connector (6 OR 10 pin) covers all that the IDE does and all the tiny's too... 8 to 28 pins. It works a treat for me.. With the ArduinoISP or the USBtinyISP. I also made one of Nick Gammon's ISP cables with the reset wire broken out for using an Arduino to directly program any target chip that has the 6 pin ISP conector...Was really easy and fun too when it worked the first time I tried it. I added one more "Mod" to the Adafruit project in that I used an RGB (clear) LED and it makes for a nice light show...
All simple and easy, I just sort of added what I liked best to one project.
(note: the AT-PA board has holes for crystals/resonators, 3 holes center is GND and the loading caps for the crystals too.)
Added the missing information about the AT-PA

Doc
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

SirNickity

Not sure what you had in mind for the ornament itself, but with simple circuits and these tiny micros, dead bug style works well.  Here's my latest project:

http://www.anchoragemakerspace.org/web/index.php/projects/75-rj45-jack-o-lantern

The project is a Halloween pumpkin with an oversize RJ45 jack carved into it, and of course a matching cardboard plug.  For the link/activity LEDs, it uses an ATtiny13A, which is pin-compatible with the 85 -- and at least in my case, almost perfectly software compatible too.  (I had to use two #ifdef checks.)  Anyway, with the component count being so low and the parts so cheap, I just soldered everything together and sealed it in hot glue.  Might be preferable to bothering with perfboard and all.

mrburnette


MichaelMeissner

Yeah, I haven't really thought about packaging yet.  I figure, I'll wait until I get all of the parts before worrying about it.  In its current configuration, it will just have a neopixel ring attached to one pin, and maybe a button attached to a second pin.  Power will be with a USB cable to bring out +5v and ground and use a cell phone charger.

I am fighting the temptation to add a PIR motion sensor, and add an ISD1820 chip to play some Christmas carol when somebody walks near.

nickgammon


I am fighting the temptation to add a PIR motion sensor, and add an ISD1820 chip to play some Christmas carol when somebody walks near.


Good. We had a toy that did that which I nearly destroyed in a fit of rage.
Please post technical questions on the forum, not by personal message. Thanks!

More info: http://www.gammon.com.au/electronics

MichaelMeissner


Good. We had a toy that did that which I nearly destroyed in a fit of rage.

As my wife said, do you hate your family?  If I do that for a private copy, I would put a clearly marked off switch on the back.  Ah well.....  Best not to do it.

nickgammon


As my wife said, do you hate your family?  If I do that for a private copy, I would put a clearly marked off switch on the back.  Ah well.....  Best not to do it.


Not at all. But there are only so many times you can listen to "Jingle Bells Rock" when you walk down the hallway.
Please post technical questions on the forum, not by personal message. Thanks!

More info: http://www.gammon.com.au/electronics

Docedison

I don't know, I listened to my wife for all of our marriage, until she died... The secret is in learning what to listen to and what to tune out.
Once you learn how to tune it out completely them you learn what to listen for..

Doc
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

mrburnette

The secret is in learning what to listen to and what to tune out.  XD

For me, 40 years together is largely due to My understaining that When She rings the bell, I'm to play like Pavlov's dog.

Ray

MichaelMeissner

FWIW, as an amusing coincidence, I ordered the neopixel rings from Adafruit (about 200 miles away), and the 10 ATtiny85's from the Hawaii seller on Monday October 28th, and both arrived today Friday November 1st (using the cheapest post office first class mail delivery).  I would have expected the ATtiny85's to take a little longer, but I notice it usually takes a day or two before Adafruit gets around to shipping the item with the cheaper delivery options.

Now, if the programmers show up, and I can get some time to play with it.

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