Comments for Stuff http://chriscoleman.com/stuff Just another weblog Tue, 07 Sep 2010 00:58:54 +0000 http://wordpress.org/?v=2.2.1 Comment on skateboard by Erik Meinke http://chriscoleman.com/stuff/?page_id=5#comment-12982 Erik Meinke Sun, 15 Mar 2009 20:33:51 +0000 http://chriscoleman.com/stuff/?page_id=5#comment-12982 7 months later and I'm finishing up on the program. I've got the frame, mechanical, and electrical all in place but my program is glitchy. It doesn't respond very fast and when it finally does it doesn't give enough power to the OSMC to make a difference. I've given the OSMC the same amount of power as my Arduino's only command (without the entire balancing program) and it's a whole lot more powerful. I'm thinking that I made it too basic to control the board. I'm only using the accelerometer because it hasn't given me any bad values even when I'm shaking the heck out of it. If you'd be willing, could you take a look at my program? My email is ehm724 [at] yahoo [dot] com. 7 months later and I’m finishing up on the program. I’ve got the frame, mechanical, and electrical all in place but my program is glitchy. It doesn’t respond very fast and when it finally does it doesn’t give enough power to the OSMC to make a difference. I’ve given the OSMC the same amount of power as my Arduino’s only command (without the entire balancing program) and it’s a whole lot more powerful.

I’m thinking that I made it too basic to control the board. I’m only using the accelerometer because it hasn’t given me any bad values even when I’m shaking the heck out of it. If you’d be willing, could you take a look at my program? My email is ehm724 [at] yahoo [dot] com.

]]> Comment on About by admin http://chriscoleman.com/stuff/?page_id=2#comment-12228 admin Thu, 12 Feb 2009 06:31:14 +0000 http://chriscoleman.com/stuff/?page_id=2#comment-12228 take a look at the parts list. There's a part number and a link to mcmaster. take a look at the parts list. There’s a part number and a link to mcmaster.

]]> Comment on About by Alfonso Loya http://chriscoleman.com/stuff/?page_id=2#comment-12226 Alfonso Loya Thu, 12 Feb 2009 05:58:03 +0000 http://chriscoleman.com/stuff/?page_id=2#comment-12226 <p>Hello Chris, I am writing you from Parral Chihuahua Mexico, we are strugling with the control of the hammer and we are thinking that the 3 way valve may be the cause, one question: the valve you are using is an L flow pattern or a T flow pattern?</p> <p> We are using an L flow pattern, is this the right valve??</p> <p>We will appreciate your advice! thank you in advance for your feedback!!</p> <p>Alfonso</p> Hello Chris, I am writing you from Parral Chihuahua Mexico, we are strugling with the control of the hammer and we are thinking that the 3 way valve may be the cause, one question: the valve you are using is an L flow pattern or a T flow pattern?

We are using an L flow pattern, is this the right valve??

We will appreciate your advice! thank you in advance for your feedback!!

Alfonso

]]> Comment on hammertime by Gary Davis http://chriscoleman.com/stuff#comment-10449 Gary Davis Sat, 27 Dec 2008 22:50:42 +0000 http://chriscoleman.com/stuff#comment-10449 Chris, I want to thank you for taking the time to freely offer your ideas. I am sure, your generosity will repay you many times over. As a machinist and tool designer, I was very impressed with your work and thoughts. Gary Chris,

I want to thank you for taking the time to freely offer your ideas. I am sure, your generosity will repay you many times over.
As a machinist and tool designer, I was very impressed with your work and thoughts.

Gary

]]> Comment on skateboard by stephen http://chriscoleman.com/stuff/?page_id=5#comment-8407 stephen Sun, 23 Nov 2008 14:48:54 +0000 http://chriscoleman.com/stuff/?page_id=5#comment-8407 I was wondering if you had to adjust the frequency of the PWM signal from the arduino to the OSMC. OSMC is spec'd to take 2, 4, 8, 16, or 32 kHz, but the arduino analogWrite() function outputs at around 500 Hz. How did you do your PWM? I was wondering if you had to adjust the frequency of the PWM signal from the arduino to the OSMC. OSMC is spec’d to take 2, 4, 8, 16, or 32 kHz, but the arduino analogWrite() function outputs at around 500 Hz. How did you do your PWM?

]]> Comment on skateboard by Alessandro Faccioli http://chriscoleman.com/stuff/?page_id=5#comment-6702 Alessandro Faccioli Sun, 12 Oct 2008 18:14:13 +0000 http://chriscoleman.com/stuff/?page_id=5#comment-6702 Hi Chris, I'm from Italy and I'm trying to build an electric skate like yours, but I need some help (I promise, I'll not ask you the code :) ).. could you contact me by email? Hope to hear from you soon, thank you :) Hi Chris, I’m from Italy and I’m trying to build an electric skate like yours, but I need some help (I promise, I’ll not ask you the code :) ).. could you contact me by email?
Hope to hear from you soon, thank you :)

]]> Comment on hammertime by Mike Selinsky http://chriscoleman.com/stuff#comment-4433 Mike Selinsky Sun, 31 Aug 2008 16:48:44 +0000 http://chriscoleman.com/stuff#comment-4433 I wanted to thank you for sharing such a great design. I've recently built a 200lb kinyon style hammer with your control system, using twin 2" cylinders and larger valving, the machine works great, great control, I have the control for small forgings and the ability to work with larger materal as well. Thanks again I wanted to thank you for sharing such a great design. I’ve recently built a 200lb kinyon style hammer with your control system, using twin 2″ cylinders and larger valving, the machine works great, great control, I have the control for small forgings and the ability to work with larger materal as well. Thanks again

]]> Comment on skateboard by admin http://chriscoleman.com/stuff/?page_id=5#comment-4280 admin Wed, 27 Aug 2008 19:24:55 +0000 http://chriscoleman.com/stuff/?page_id=5#comment-4280 I actually tried a simple-h to start with but couldn't get it to work well. Not sure why. I futzed with it for quite awhile and then finally gave up and went to the osmc, which got me going within minutes of hooking it up. sometimes paying for the good stuff upfront actually does end up saving a lot in the end. good luck. I actually tried a simple-h to start with but couldn’t get it to work well. Not sure why. I futzed with it for quite awhile and then finally gave up and went to the osmc, which got me going within minutes of hooking it up. sometimes paying for the good stuff upfront actually does end up saving a lot in the end. good luck.

]]> Comment on skateboard by Erik Meinke http://chriscoleman.com/stuff/?page_id=5#comment-4272 Erik Meinke Wed, 27 Aug 2008 16:15:18 +0000 http://chriscoleman.com/stuff/?page_id=5#comment-4272 I was wondering why you used the OSMC instead of something a bit cheaper? I am planning out one of these and I am trying to make it as affordable as possible. I was looking at the Simple H controller which is http://robotpower.com/products/simple-h_info.html . Is there any reason this would be harder to use? Or not able to use it at all? Thanks. I was wondering why you used the OSMC instead of something a bit cheaper? I am planning out one of these and I am trying to make it as affordable as possible. I was looking at the Simple H controller which is http://robotpower.com/products/simple-h_info.html . Is there any reason this would be harder to use? Or not able to use it at all?

Thanks.

]]> Comment on skateboard by Alan http://chriscoleman.com/stuff/?page_id=5#comment-3449 Alan Wed, 06 Aug 2008 14:04:11 +0000 http://chriscoleman.com/stuff/?page_id=5#comment-3449 Hey, I actually just finished the mechanical side of my one wheeled skateboard... and have some nice little features in mine. for example i have a small momentary switch which controls the entire power on and off of the board rather than a big mechanical switch. when the momentary switch is pressed a relay is flipped which allows power to flow to the motor controller. the arduino is always on in a standy-by mode just waiting for someone to click the momentary switch... i've written all the nice code which makes my relay flip and all the subroutines with the stand-by mode and such but i havent a clue where to start with the balancing subroutine and my research has not helped me at all! COULD YOU PLEAAAAASSSE HELP ME!!!!!! Hey, I actually just finished the mechanical side of my one wheeled skateboard… and have some nice little features in mine. for example i have a small momentary switch which controls the entire power on and off of the board rather than a big mechanical switch. when the momentary switch is pressed a relay is flipped which allows power to flow to the motor controller. the arduino is always on in a standy-by mode just waiting for someone to click the momentary switch…

i’ve written all the nice code which makes my relay flip and all the subroutines with the stand-by mode and such but i havent a clue where to start with the balancing subroutine and my research has not helped me at all! COULD YOU PLEAAAAASSSE HELP ME!!!!!!

]]>