Archive

Archive for the ‘Project’ Category

Hive13CNC progress

March 23rd, 2011 1 comment

A quick status update on the CNC / stepper board:

Following parts came together Voltron style after this evening’s meeting:
  • Stepper test rig, which has 3 stepper motors and 3 Hive13 driver boards mounted on it. [Jim, James]
  • Opto-isolated parallel port breakout board [Paul]
  • Various power supplies [Paul, me]
  • Desktop PC [Dave B]
  • Irresponsible lack of sleep [Dave M, me]
So, we now have a setup with a PC driving 3 stepper motors successfully!
Currently it is running EMC2 using the LinuxCNC distribution, but no worries Jim, the machine has an XP license so as soon as we have Windows install media handy it will dual boot to run Mach3.
This is about 90% of the electronics for a CNC. Missing is an ESTOP button, home / limit switches, and random wiring.



Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Project Tags:

Hive13 Glass Block Window Project

December 2nd, 2010 1 comment

Glass block display in progressAt Hive13 we have a 5′ × 5′ glass block wall/window in our space and the first thing we thought of when we saw it was a 7 × 8 pixel grid.

We want to build a programmable full color, lo-res display using RGB LEDs.

To do this we obivously need LEDs – lots of LEDs. The brighter the better.

We could use these nice ShiftBrite modules, but we’d really rather go all out and get the ShiftBrite’s big brother – the MegaBrite.

ShiftBrites are about $3.50 each and MegaBrites are about $7.75 each. And we need 56 of them. We’ll also need some cabling to connect them all up. The cables are about $1.50 each too. Finally, we’ll need a a good power supply to power it all; that could be as much as $100.

So,

($3.50 + $1.50) * 56 = $280

($7.75 + $1.50) * 56 = $518

All told, we’re going to need somewhere between $300 – $700 to do this. We’re shooting for $400 here. If we go over and get to $700, awesome. If we only get to $300, we’ll make do. Any funds raised here, but not used, will go directly to the Hive13 general fund.

Here’s the stuff on our shopping list:

ShiftBrites:
http://macetech.com/store/index.php?main_page=product_info&cPath=1&products_id=1

MegaBrites:
http://macetech.com/store/index.php?main_page=product_info&cPath=1&products_id=9

Cables:
http://macetech.com/store/index.php?main_page=product_info&cPath=3&products_id=3

Here’s the project page with our progress and prototypes so far:
http://wiki.hive13.org/Glass_Block_LED_Matrix

Click here to lend your support to: Hive13 Glass Block LED Window Matrix and make a donation at www.pledgie.com !

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Glass Block Display is Growing

December 23rd, 2009 2 comments

Glass Block Display ColumnsCJDavis and I were at the hive until about 1:20 am this morning working on finishing up a second strand of LED lights for the Glass Block Matrix LED Display.

In this image we are diffusing the LED’s with a sheet of paper towel which causes a nice soft glow, however it greatly reduces the brightness.  Therefore we are leaving the paper towels off even though they make for a great picture and viewing experience from inside the bathroom.

We have had some technical issues with both the RGB LEDs and the wiring system we are using.  A good amount of the LED’s seem to have an issue where they will turn on even when the anode wire is not connected to anything.  We are talking nothing, like it is just soldered into a proto-board.  Current speculation is that either the LED’s are bad or the proto-boards are bad.

Another problem we have been having is that originally we were using Cat-5 to wire up each anode for the 8 LED’s in a column, however the current in the twisted pairs was enough to induce a current in the second pair causing issues with LEDs coming on when they are not supposed to.  This is a fairly limited problem so far as the LEDs only glow faintly.  In any case we are altering how we wire up future anodes.

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Project Tags: ,

Arcade Night

December 14th, 2009 1 comment

Bee Game Sunday December 20th is Arcade Night.  This is were anybody who is interested in fixing up arcade machines or building your own game system or augmented reality game should come and collaborate!  Starting at 5pm on Sunday show up to help out or start your own project.  We will be fixing up several standup cabinets as well as the rather large arcade units.

Note:  This is not a night to play arcade games but to build/refurbish them.  Although we will always need to test our final products, of course…

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Events, Project Tags:

RGB Glass Block Matrix Update

December 7th, 2009 No comments

PVC FrameworkI had some spare time down at the hive last night so I finished assembling the framework for the RGB Glass Block Matrix display.   The next step is going to be to mark out where to drill the holes for the LED.

After that is done we can start soldering up the LEDs.

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Project Tags: ,

New toy at the hive!

December 5th, 2009 4 comments

A few of our members stopped up at the UC surplus sale on saturday and picked up a couple of largeish projectors.  One of them had a working bulb and a bad powersupply ($25), the other had a bad bulb ($50).

After moving the bulb from the projector with a bad powersupply to the projector that just had a bad bulb we discovered that we now had a very nice working projector.

This should provide a nice start for our Laser Graffitti projects, also, we still have the other projector that needs a new powersupply but could serve as the base for testing more powerful light sources.

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Project Tags: ,

New Hive13 Project – Meltdown

November 26th, 2009 3 comments

This is another project initiated by PlayerTwo.  This is an older arcade game called Meltdown.  The way the game works is the game will move a goal box up and down a center tube.  Inside the center tube is a radioactive sample that the gamer must keep centered inside the goal box by adjusting the flow of the air through the center tube.

The main problem at the moment is that the goal box is on a cable that keeps getting snagged and is a bit stretchy so it slips.  Once this problem is worked out there is a bit of surface work that needs to be done.

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Project Tags: , ,

First of the flouresent lights mounted

November 12th, 2009 No comments

Some of our members picked up five flouresent light fixtures that would normally mount under a shelf in a cubical at the University of Cincinnati surplus sale.  I was down at the hive tonight and decided to look into how we might mount them on the workbench and have worked out what seems to be a good method.

First take the bulb out, then drill out the rivets that hold the light fixture to the case of the light.  Then use the holes left by the removed rivets for screws.  The end result looks fairly nice and seems pretty sturdy.

Now… just need to mount the remaining four light fixtures.

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Project Tags: ,

Friday night project: windowmatrix

October 21st, 2009 1 comment

After our regular weekly meeting last night, Dave Menninger mentioned on the way out the door an idea he’d been kicking around: wiring up LEDs in the 5×7 glass block window above the entrance to the hive. Enthusiasm was expressed, and several of us came back in put together some tests with a couple of LEDs.

This was deemed a great success, and the project brainstorming quickly escalated from a simple 8×7 array of single color LEDs to a full color display capable of video. The video part we will hold for phase 2.

So, this Friday, we will be building phase 1 of the Hive13 windowmatrix. How capable it will be depends on just what parts we are able to procure by Friday.

Stay tuned…

update: The rainbowduino LED controller board has arrived – thanks to Great customer service from NKC Electronics – http://www.nkcelectronics.com/ I can definitely vouch for that!

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Meetings, Project Tags:

Zen PIN

October 13th, 2009 No comments

One project that was used for the passcode challenge is called the Zen PIN.  The problem is people who shoulder surf can see your PIN on a keypad system.  So a fun and simple solution is to have the user memorize an algorithm instead of a PIN number.  For a Proof-of-concept the Zen PIN was developed that uses three lights.  The user enters a random PIN and the system then generates an internal random PIN.  It then blinks certain lights to indicate if the next number is greater or less than the one last pressed.  The user follows these visual clues to "unlock" the keypad.  In the PoC this just lights up the green light and plays a "good" tone.

Zen PIN Inside of ZenPIN

You can take any type of spin with this.  Such as, using multi-colored LED buttons that randomly display a color and the user knows to always press to the left of the "orange" button.  Etc.

For more information on this project see the wiki

Post to Twitter Post to Facebook Post to Google Buzz Post to LinkedIn Post to Reddit

Categories: Contests, Project Tags: