About DorkbotPDX

Dorkbot PDX has crawled out of the womb and is in the now permanent (revolutionary) process of defining itself. We meet on an regular, informal basis every other week, but you can find out more on our meetings page. In the future, we plan to hold larger events, so sign up for the mailing lists to find out what's going on. We welcome you to join us at our gatherings and to bring something interesting to view or ponder. Hands-on items (electrical, mechanical, digital, aural, visual, or other) are highly encouraged!


DS1307 breakout, bottom

Mon, 07/14/2008 - 21:17 — drtwist
DS1307 breakout, bottom

bottom of assembled breakout board


DS1307 RTC Breakout Board Rev 1

Mon, 07/14/2008 - 20:44 — drtwist

DS1307 breakout, board only

As part of my clock project (yet to be documented) I needed an accurate real time clock (RTC). I selected the Maxim(Dallas) DS1307. I based the decision mostly on it's popularity and because of the availability of C libraries for the AVR. Sparkfun has breakout board that's similar to this but i didn't feel like paying $20 plus shipping for such a simple board (plus I think that Don's parsimony is rubbing off on me a little). In addition I wanted integrated pull-up resistors in the i2c lines.


DS1307 breakout, layout

Mon, 07/14/2008 - 20:01 — drtwist
DS1307 breakout, layout

parts layout for my DS1307 breakout board


DS1307 breakout, top

Mon, 07/14/2008 - 16:56 — drtwist
DS1307 breakout, top

Top of my DS1307 breakout board showing crystal and clock


DS1307 breakout, board only

Mon, 07/14/2008 - 16:54 — drtwist
DS1307 breakout, board only

post etch of a breakout board for the ds1307


They're HERE! (the Dorkboards have arrived)

Thu, 07/10/2008 - 19:19 — feurig

And if you want to build one out you can get to the next arduino cult induction on the 27th of this month.

Stepper Motor Control With Arduino/Wiring

Thu, 07/10/2008 - 08:26 — feurig

Here is a small example of using the arduino/wiring platform to control things in the real world.

A pretty good reference for the controlling stepper motors can be found at.

http://en.nanotec.com/steppermotor_animation.html

The following Circuit fleshes out the sketch at the site above.

Cables for DorkbotPDX Programmers.

Fri, 06/27/2008 - 23:20 — feurig

In the course of the Arduino Cult Induction series and the group purchases, I have evolved several versions of the DorkbotPDX programmer and released them into the wild. Unfortunately the pinouts for the programming cable have evolved with the programmers so the cables are unique to each. With the batch of programmers we just purchased this will settle down Though the pinout may not make sense in this particular case it will be the same for at least 1000 boards.

In the mean time here is a quick guide to cables for the existing boards.

Benito7 rev a

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