algorithmic modeling for Rhino

Andy Payne
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Load Plugin from Different Directory
2 Replies

Started this discussion. Last reply by Andy Payne Nov 6.

Wishlist: Domain Slider
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Started this discussion. Last reply by Andy Payne Jun 24.

Firefly Now Available
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Started this discussion. Last reply by scotland simon Jun 22.


Andy Payne's Page

Latest Activity

Andy Payne replied to Oliver Bucklin's discussion Serial Read as a trigger for next string of serial write in the group Firefly
"Hey Oliver, What you're looking for is a call-back method... So, when one line is completed, it sends a call-back to Grasshopper and then asks for the next line in the execution file.  The Quad-Stepper Firmata (which ships with Firefly)…"
Nov 9
Andy Payne replied to Andy Payne's discussion Load Plugin from Different Directory
"Awesome!  Does the .ghlink file have any sort of structure?  Or just a directory location that I'd like to link to (ie. C:/Program Files/MyApplication/...etc)"
Nov 6
David Rutten replied to Andy Payne's discussion Load Plugin from Different Directory
"If you use the RHI installer engine, it'll work just fine. If you want to use another installer mechanism, you can put a *.ghlink file into the Libraries folder. GHLINK is just a plain textfile which contains an alternative location for a…"
Nov 6
Andy Payne posted a discussion

Load Plugin from Different Directory

I'm wondering if its possible to load a plugin from a different directory on a person's computer (say from Program Files instead of the default Libraries folder for Grasshopper).  I know I can add a folder under the GrasshopperDeveolperSettings dialog...but that would only work for each individual user and what I'm actually looking to do is to create an installer that would automatically tell Grasshopper to pickup the plugin from the Program Files location.  Would I have to create some sort of…See More
Nov 6
Karl Singline commented on Andy Payne's video

Firefly Kinect Hand Tracking

"I am running the latest Firefly with a kinect v2 which is working great. I'm attempting to produce a similar effect to one of your other videos with a LED simply reacting to hand position, was hoping this would help me figure it out, but I am…"
Sep 29
Andy Payne liked Laurent Delrieu's photo
Aug 11
serdar replied to Andy Payne's discussion Firefly Now Available for Rhino 5.0 in the group Firefly
"Hi Evan. I am having the same problem. Did you find a solution?"
Aug 10
Yutao Song commented on Andy Payne's video

G-Code Writer for Surface Milling

"nice example!! it helps me a lot!!"
Jul 24
Yutao Song liked Andy Payne's video
Jul 24
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Jul 24
Andy Payne liked David Rutten's video
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Jul 9
Andy Payne replied to Levent Ozruh's discussion Port Error in the group Firefly
"Hi Piotr.  The oldest version on the food 4 rhino site is 1.0067 (which is 32-bit which is the only one that was created during this versioning).  I believe this will have the required stepper component/code you're looking for.…"
Jun 29
Andy Payne liked Hui Chen's video
Jun 29

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Andy Payne's Blog

New Firefly Website with Shop

I am excited to announce that Firefly has a new and improved website (  The website has many new features including a new forum and an e-commerce shop which includes products like the new Firefly Interactive…


Posted on July 2, 2014 at 8:40am — 2 Comments

Facades+ Interactive Surfaces Workshop

I am excited to be teaching a one-day Interactive Surfaces workshop for the upcoming Facades+ Conference being held in New York City on April 11th-12th.  The…


Posted on March 19, 2013 at 9:47am

Firefly Now Available for Rhino 5.0

Hi Everyone,

After a long time coming, the complete Firefly toolkit has finally been upgraded for Rhino 5.0 (both 32-bit and 64-bit versions).  This new release includes an updated C_sawapan_media.dll (many thanks to Panagiotis Michalatos!) as well as a new installer!  

The installer should automatically remove any previous versions, and copy all of the core Firefly Grasshopper Assembly files (as well as any needed dependencies) into the roaming Libraries folder on…


Posted on February 4, 2013 at 5:54pm — 1 Comment

Firefly Kinect 0.0004

I have just released an update for the Firefly Kinect (ver. 0.004).  There had been a small bug in the Kinect Video Stream and Kinect Depth Stream components which has now been corrected.  As before, this build uses the Microsoft Kinect SDK 1.5, which means the components will only work in Rhino 5.0.  For best results, I recommend using Rhino 5.0 32-bit version as the Firefly Kinect components also rely on some of the C_sawapan_media.dll functions which has only been compiled for 32-bit…


Posted on October 3, 2012 at 12:45pm — 3 Comments

New Firefly Build, Website, and more!

I'm really excited to announce the release of several new Firefly endeavors I've been working on over the past few months.  The first is the release of a new Firefly Build (1.0067) which is compatible with the latest version of Grasshopper (0.9.0006).  This release has a lot of new features…


Posted on August 17, 2012 at 2:26pm — 9 Comments

Comment Wall (24 comments)

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At 11:49am on March 31, 2015, manny ferro said…

Hello ,

Andy I sent you a friends request. I am emanuel From the workshop at

TEXFAB.  I am having a issue with the steppers and was wondering if you could take a look at the Grasshopper build that i have used from the library samples.

Thank You

Manny Ferro

At 7:06pm on June 15, 2014, Matthew Gilbride said…

Thanks Andy. That cleared up a lot and reinforces what David explained. Had the same thought about handling the high frequency data on Arduino and sending data much less frequency to Grasshopper. Sounds like a challenge that will take some time to figure out. 

At 11:22am on June 15, 2014, Matthew Gilbride said…

Hey Andy. Have much enjoyed your gcode definitions in the past and have started using firefly, another great tool. I am trying to do something that sounds like it may have a technical roadblock. I want to read pulse output from an arduino that is running the gcode interpreter GRBL. I use grbl with my diy cnc but I am trying to cobble together a simulator for testing and understanding the firmware and gcode programs I use. The arduino pumps out pulses that are only 5-50 microseconds wide. I think I can set them as big as 255 microseconds wide. I can read the output at 1ms intervals using firefly but obviously drop a lot of information. Do you think there is a way to successfully read those pulses in through firefly? 

At 2:35am on June 8, 2014, Anan Ashour said…

Hey Andy,

many thanks for your great plug-in.

I am trying to start using Kinect in Grasshopper and I am wondering if you can provide me with some tutorials/hints for beginners?

Many Thanks

At 12:54pm on February 14, 2014, philip pappas said…

Hi Andy,

i've hooked up a dc motor with an h bridge circuit and i have been able to control the rotation and speed so far through Arduino code. Now i wanted to do the same through Firefly, but it keeps working with the Arduino sketch ignoring the current values i am sending through Firefly, shouldn't the Arduino sketch be overwritten? However that was not the case with servos..

Should i reset the Arduino?

Thank you

At 11:06am on December 18, 2013, shahriar akbari said…

Hi andy 

I've been trying to work with OSC lately,but unfortunately i was not able to send data from my ipad to grasshopper although I was able to send some data from grasshopper to ipad. all the port numbers and page numbers and stuff seem to be right. i was wondering if you could help me. thnx in advance 

At 4:00pm on October 25, 2012, lmnts said…


FYI, I just hooked up a different type of stepper motor ( and the speed is much better.  This must be a hardware issue I'll have to look at.  Sorry for the trouble.


At 2:06pm on October 25, 2012, lmnts said…


I really appreciate the quick response.  My issue here is speed.  I took a look at AccelStepper.h, which mentions that speeds above 1000 steps/sec are just to test it, I tried setting the stepper speed to 1000 on the quadstepper component.  The steppers I'm using are vextas:, which have a step angle of .9.  So a speed of 1000 should give me an rps of 2.5, but when I set the quadstepper to a speed of 1000, the actual rps I'm getting is really slow, its more like .2 rps. 

At 1:39pm on October 25, 2012, lmnts said…


Thanks again for your help today with the capacitors. I have another question regarding quadsteppers and I'm not sure which forum for Firefly is current.  Is the most recent forum at  I had trouble finding a discussion part on the new web site. 

Anyway, I posted a question there about increasing stepper speeds with the Quadstepper driver.  I'm trying to attach a dremel to a reprap to turn it into a router.  The quadstepper works great, but I just need some more juice.  Thanks for any help.


At 10:56pm on September 13, 2012, Alina Minassian said…


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