This is a basic piston i printed out to test the pneumatic capabilities of printed objects. I set the fill up to .7 but still have some holes in prints. These holes vary in between a couple of cracks to many holes. In the future i'll be designing thicker walls but if anybody has any ideas and/or comments you're welcome to share them. The piston cap is designed slightly bigger than the piston cylinder walls so that it can be filed down to a perfect fit with the piston walls

Based on an idea I got from MakerBlock, I decided to create a Dalek from the 2005 series. I've used drawings from various groups to create it, so it should be to scale. However, I haven't quite worked out how to attach the eye, plunger, and gun yet, so that will hopefully be in a posted update soon. I could use any suggestions on attaching them!

Thanks

This kit is hard to make! It's SMD soldering and it's freaking hardcore. We're selling them at just a little bit more than cost because this is for alpha users!

We're going to go into production on these and they will come mostly assembled. We are just selling these as alpha kits.

There is no guarantee or warranty at all. Bre has made four of them and three of them required a lot of fussing with the soldering until he got rid of all the solder bridges.

Specs:

* Atmega328 chip with Arduino bootloader on it.
* 6 pin header for bootloading. Also includes access to 4 I/O pins and power and ground
* 6 pin header for programming.
* 4 pin extension header for plugging in other things like sensors or shields that extend the watch.
* 16mhz crystal.
* Piezo buzzer
* 3 pushbutton switches

It has 12 LEDs to mark the hour and 12 LEDs to mark the 5 minute marks plus an extra 4 LEDs to mark the 4 extra minutes that aren't shown. So if it was 12:04 the hour LED in the 12 position would be lit up and the Minute LED in the 12 position would be lit up and the 4 extra minutes would be lit up to show that it's 12:04.

Besides having it work on a watch, there are a number of other possibilities because it's an arduino environment on your wrist!

You will need a TTL Cable and USBTiny programmer to program this kit. (Available here in the MakerBot store.

Documentation is available in the wiki at wiki.makerbot.com/makerbot-watch

We ordered a bunch of prototype boards and I've made them into 18 kits and put made them really cheap to just get them out there in the world and get friends playing with them. This is for alpha users because it is realllllly hard! I have soldered up 4 of them and 3 of them had major solder bridges that made me swear a lot. Be prepared for a serious smd challenge!

Here's the google group for it: groups.google.com/group/makerbotwatch If you get one, you really really really need to join!
Here's the wiki documentation: wiki.makerbot.com/makerbot-watch
Here's the link to the store where you can get it: store.makerbot.com/electronics/electronics-kits/makerbot-watch-kit.html

The power plug for my T61 ThinkPad broke, as they frequently do, just at the point where the wire enters the plug. Grrr. What to do? Print a new one!

Okay, this is not quite done, but I thought I'd throw it out there anyway.

This version is less prone to cracking. Instead of a washer and nut, there is an M6 tapped hole in a piece of aluminum. But best of all, two can be bolted together to form a dual head extruder. Yes, you can have one or two of the same extruder! I'm working on a mount for this right now.

See my YouTube videos of previous versions for theory of operation (http://www.youtube.com/watch?v=HMjVrmLJvIU) and how quickly the filament can be changed (http://www.youtube.com/watch?v=z_isuzpvjBc)

Subversion svn.makerbot.com/users/charles/paxtruder/