Activity

From 08/24/2017 to 09/22/2017

09/21/2017

05:59 pm Pixy Software: RE: I can't get passed step 2.5 Build and install libpixyusb
Hello,
It looks like you don't have cmake installed.
Depending on your type of system, it might be a command l...
Edward Getz

09/19/2017

02:21 pm Pixy Software: I can't get passed step 2.5 Build and install libpixyusb
2.5 Build and install libpixyusb
2.5.1. Build the library
In the terminal window type:
cd pixy/scripts
./build_...
Gil Pollak

09/18/2017

07:48 pm Pixy Software: RE: Smaller blocks often not Returned
Just thought I'd share this. Flushed with success, I upped the speed even more using TWI_FREQ 800000L. Now I get al... Dave Coleman
07:43 pm Pixy Software: RE: Smaller blocks often not Returned
Hooray! Glad it worked :D let us know if you need anything else!
Best,
Jesse
Jesse French
07:22 pm Pixy Software: RE: Smaller blocks often not Returned
Just tried speeding up I2C from "slow" to "fast" by modifying the Arduino Wire library twi.h to specify #define TWI_F... Dave Coleman
06:44 pm Pixy Software: RE: Pixy interaction with ROS
Hi Luciano,
unfortunately we don't have a ton of experience with ROS - here are some threads I found from users he...
Jesse French
06:40 pm Pixy Software: RE: CS Error and Reorder over I2C on Arduino Uno
Hi Richard,
can you be more specific? What errors are you seeing? In PixyMon, or in the Arduino IDE?
Thanks,
J...
Jesse French
06:39 pm Pixy Software: RE: Smaller blocks often not Returned
Hey Dave,
yes, I suspect that's what's happening - basically a buffer overflow on the Pixy side. When this happens...
Jesse French
02:08 pm Pixy Software: RE: Smaller blocks often not Returned
Back from Travels... The reason I went with SPI is from a previous use of the Pixy where I was logging to an SD card... Dave Coleman

09/16/2017

11:28 pm Pixy Software: CS Error and Reorder over I2C on Arduino Uno
I keep getting intermittent errors. Anything in particular that usually causes this? Maybe cable length? Richard Johnson

09/13/2017

08:48 pm Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Here's a diagram found by @tarzan from the Teensy forum. It verifies the SPI 3.3V pins. This is good news. No need... Rand Vibe
04:35 pm Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Hmm, good point - we don't list voltage levels on the pinout. Maybe I can make that happen...
Here's the diagram, ...
Jesse French
01:04 am Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Edward Getz wrote:
> Hello Rand,
> The SPI signals are 0 to 3.3V. Pixy runs off of 5V, but none of its signals ar...
Rand Vibe

09/12/2017

10:28 pm Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Hello Rand,
The SPI signals are 0 to 3.3V. Pixy runs off of 5V, but none of its signals are 0 to 5V except for I2C...
Edward Getz
09:01 pm Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
The aforementioned Pixy functions for SPI communication with the Teensy 3.5 are working well. Now I want to try the s... Rand Vibe

09/09/2017

02:51 pm Pixy Software: Pixy interaction with ROS
Hello I want to integrate Pixy with ROS and found two nodes based on this link
http://forum.erlerobotics.com/t/pix...
Luciano Silveira

09/08/2017

07:46 pm Pixy Software: RE: Smaller blocks often not Returned
Hi Dave! Sounds like a smart approach. Off-hand, I'd guess this is a bus speed limitation. Try increasing the baudrat... Jesse French

09/07/2017

04:26 pm Pixy Software: RE: Run scripts without sudo
That's another good solution. Thanks for sharing!
Edward
Edward Getz
04:26 pm Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Hello Rand,
I believe you don't want to exceed 1.5Mhz for a cable less than 1 ft in length.
Congratulations on...
Edward Getz
04:27 am Pixy Software: Python "close" pixy USB connection
Hy
I have python script where I use the block detection of the pixy cam.
This works great, however after the scri...
Andreas -
03:50 am Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Hello Jesse, I understand the Pixy is the slave, but there should be a maximum clock rate it can handle. Is it 1 Mhz... Rand Vibe

09/06/2017

08:49 pm Pixy Software: Smaller blocks often not Returned
I've built a line following (blob following) application running on Arduino and using Pixy via I2C. I divide the Pix... Dave Coleman
03:18 pm Pixy Software: Detecting a laser at a distance
Hello,
I'm trying to get my Pixy to track a red laser and I'm having some trouble getting it to track it from any si...
Raxius Bloom

09/05/2017

10:44 am Pixy Software: RE: Run scripts without sudo
thx jesse
I did now add the pixy folder to the visudo so that all user have permission to run any script without s...
Andreas -
10:42 am Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Hi Rand,
When Pixy talks over SPI, it does so as a "slave", which means that it takes the clock rate from the maste...
Jesse French
10:38 am Pixy Software: RE: Run scripts without sudo
Hi Andy,
Sorry, I was confused. The programs that use Pixy need to run as root because of the device permissions f...
Jesse French
04:07 am Pixy Software: RE: Pixymon modified with a custom tracking algorithm with no colors!
Hi everybody,
Great work. I am trying to use this motion tracking algorithm with small adjustments for my needs. I...
Ales Pogacar

08/31/2017

04:31 am Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Yes, I was able to configure my Pixy board through the PixyMon app. When I choose SPI with SS, it does not allow me ... Rand Vibe
02:35 am Pixy Software: can't activate block detection after grab_frame
When I use the "hello_pixy" demo the first time I get all block detection without problem.
However if I stop the pro...
Andreas -
12:40 am Pixy Software: RE: Run scripts without sudo
for example the helo_pixy script. I can only run this with sudo.
It's also described in the Wiki
@cd /pixy/build/...
Andreas -

08/30/2017

07:01 pm Pixy Software: RE: Pixy Camera with Teensy 3.5 and SPI
Hello Rand,
We do have SPI with SS supported. :)
http://cmucam.org/projects/cmucam5/wiki/Interface_Pane
Edward
Edward Getz
07:00 pm Pixy Software: RE: Run scripts without sudo
Hello Andreas,
I'm not sure what your pixy script does. Can you describe?
Edward
Edward Getz
06:06 am Pixy Software: Pixy Camera with Teensy 3.5 and SPI
A couple of years ago I transitioned from the Arduino-Due to Teensy, specifically Teensy 3.2 and recently 3.5 & 3.6. ... Rand Vibe
05:36 am Pixy Software: Run scripts without sudo
Hy
I have several scripts that are execute after booting the sytem. How can I launch
a pixy script without sudo?
...
Andreas -

08/28/2017

06:56 pm Pixy Software: RE: Pixy coordinates
Hi Ramesh,
It's true that you can use a lens that's designed for a larger sensor. It will give you a narrower fiel...
Jesse French
06:33 am Pixy Software: RE: Pixy coordinates
Great. Can i use a m12 lens designed for 1/2.3" sensor? We can use higher image sensors larger than 1/4" right? Ramesh Warusavitharana

08/25/2017

08:19 pm Pixy Software: RE: Pixy coordinates
Hello Ramesh,
The default lens that comes with Pixy is fairly wide field of view, which leads to some distortion. ...
Edward Getz

08/24/2017

04:34 am Pixy Software: RE: Pixy coordinates
Well i'm making a length measuring device using pixy. it tracks two led's and get the length between them in pixels t... Ramesh Warusavitharana
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