"Geoffrey,
First of all, thanks for a very interesting site and product.
Second, how soon to you think the Aphid's will be on the street?
And third, after reading your comment about hooking the project up to a low power micro controller, I…"
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Geoffrey L. Barrows's Discussions
ArduEye Aphid Standalone Example #1: Generate PWM based on light position
INTRODUCTIONAs an experiment, I've decided to make a few ArduEye Aphid examples written specifically for an Aphid, and written for "very easy" use. Specifcially, these examples will meet the…Continue
Started Mar 22
ArduEye Aphid Initial Tutorial (Part 3): Exploring the ArduEye Examples
IntroductionOn the ArduEye Wiki site there are three "Utility Sketches" that demonstrate different aspects of the ArduEye libraries. All three of…Continue
Started Mar 14
ArduEye Aphid Initial Tutorial (Part 2): Sample Firmware Shipped with Sensor
Note: It is recommended that you look through the "Getting Started Guide" on the ArduEye site (www.ardueye.com). In particular, look through the sections on…Continue
Started Mar 13
ArduEye Aphid Initial Tutorial (Part 1): Hardware Overview
This tutorial introduces the ArduEye Aphid hardware. Firmware and software examples will be provided in another section.PICTURES AND PINOUTS…Continue
Started Mar 12
Geoffrey L. Barrows's Page
Latest Activity
Bobb Craig commented on Geoffrey L. Barrows's blog post Internet of Things (IoT) car traffic counter camera using an ArduEye and COSM
Dan Loesch replied to Geoffrey L. Barrows's discussion Use of Stonyman chips with an Arduino Due (or other 3.3V ARM)"I have finals this coming week and after that I am leaning into this full boar. You are going to have to adjust the port mapping to that of the Arduino Due. I'm attaching links to explain this and give you port tables. I hope…"
Clinton McKinnon replied to Geoffrey L. Barrows's discussion Use of Stonyman chips with an Arduino Due (or other 3.3V ARM)"If it's any use the below is a link to where we were doing a similar thing with teensy3, second bottom. Teensy 3 is an ARM working on an arduino platform, however it is NOT a due running on the arm version of arduino. I have no…"
Richard replied to Geoffrey L. Barrows's discussion Use of Stonyman chips with an Arduino Due (or other 3.3V ARM)"I just made a quick attempt to compile FirstApp on the Arduino Due. I connected the stonyman breakout board to the normal pins on the board as indicated by Geof:
D4 = INPHI
D5 = INCV
D6 = RESV
D7 = INCP
D8 = RESP
A0 = ANALOG
I commented out all the…"
Geoffrey L. Barrows replied to Clinton McKinnon's discussion embedded IR vision using current die structure"A thought, though this is 10 years old: http://www.airpower.au.af.mil/airchronicles/apj/apj04/spr04/phispr04.html"
Geoffrey L. Barrows replied to Mangibu's discussion Stonyman library - calculation of the mask"Yes this calculation is correct. img_a is the image grabbed when the texture is blank.
The reason we use mask_base and mask[i] rather than putting everything in mask[i] is that if we first subtract out the base, then we can use just 8-bit values for…"
Geoffrey L. Barrows replied to Mangibu's discussion Stonyman Vision Chip - Level shifting"I'd be interested in seeing what you get, if you are willing to share it (openly or closed)."
Geoffrey L. Barrows replied to Clinton McKinnon's discussion embedded IR vision using current die structure"Clinton- Good question- Some of our customers have expressed a LOT of interest in extending our sensors to the thermal IR region, but I don't see an easy way to do this without either a rather expensive MEMS type of fabrication (microbolometers…"
Geoffrey L. Barrows replied to Chris Majoros's discussion feasibility"You should be able to do what you suggest, though it depends on what you mean by "very fast". Ambient light will not affect the motion of the ball."
Geoffrey L. Barrows replied to Mangibu's discussion Stonyman Vision Chip - Level shifting"Wow- Thanks for the detail! I took a closer look at the chip schematic and what you report is correct- the chip draws more power with INPHI high.
A future chip we are working on will draw less power."
Geoffrey L. Barrows replied to yoyochan's discussion OFO algorithm"Yoyo,
The "scale" variable is a basic scaling parameter. It was selected so that reasonable values could be obtained when using fixed-point arithmetic, which is faster than floating point arithmetic especially on an Arduino. It really…"
Geoffrey L. Barrows replied to yoyochan's discussion Displaying the full array in Matlab"Sorry about the delay responding. What was the problem? It appeared as if you hadn't set the CONFIG register properly."
Geoffrey L. Barrows replied to Mangibu's discussion Stonyman Vision Chip - Level shifting"The amplifier was not designed to be shut off, but it shouldn't draw very much current- probably no more than 100uA.
You *might* be able to reduce the current a little as follows:
1) keep selamp = 0
2) set VREF = 63
3) hold INPHI high.
I…"
Geoffrey L. Barrows replied to Pengyu's discussion circuits powered by VDDA"Basically I just meant allowing for a longer settling time. You might want to play independently with NBIAS and AOBIAS- most likely one of these will give you more power decrease w/o sacrificing speed than the other."
Geoffrey L. Barrows posted a discussionArduEye Aphid Standalone Example #1: Generate PWM based on light position
INTRODUCTIONAs an experiment, I've decided to make a few ArduEye Aphid examples written specifically for an Aphid, and written for "very easy" use. Specifcially, these examples will meet the following criteria:The source code must fit all within one sketch, and not require any external libraries other than standard Arduino libraries. All you need to program the sensor with the firmware is the Arduino IDE.The source code does not require any modification to use- you can compile it and program…See More
Profile Information
- Hometown (All questions are optional)
- Washington, DC
- About me
- Founder of Centeye, Inc.
- Technical interest
- optics, image sensor chips, vision hardware, image processing, ground robotics, airborne robotics, sensor networks, art or music
- Website
- http://www.centeye.com
Geoffrey L. Barrows's Blog
Updated Stonyman data sheet
We have updated the Stonyman data sheet to include software exemples (in Pseudocode). Version 1.0 is here: Stonyman_Hawksbill_ChipInstructions_Rev10_20130312.pdf
Posted on March 12, 2013 at 11:57am
ArduEye Aphids first batch now available
We have a small batch of ArduEye Aphids that are now available for serious beta users. An Aphid is essentially a clone of an Arduino Pro Mini but with a Stonyman vision chip and an external 12-bit 100ksps ADC added. For more details and for ordering, please visit the…
Posted on March 6, 2013 at 9:30am
Internet of Things (IoT) car traffic counter camera using an ArduEye and COSM
Eager to make a little foray into the "Internet of Things", I decided to experiment with the use of an ArduEye as an "Eye for the IoT". My house is on a fairly busy street, of which I have a good vantage point from my attic home office. A car traffic counter seemed like a good choice…
ContinuePosted on February 19, 2013 at 5:00pm — 3 Comments
BCIT students make eye tracking computer input device, for ALS patients, using Centeye chip
This is the type of news that makes everything we do worthwhile! This past January, I was contacted by Alex Sayer, Alan Kwok, and Benny Chick, students at the British Columbia Institute of Technology (BCIT) in Vancouver, who wanted to use some of our Tam2 chips for a class project in which they would provide a human-computer interface (HCI) for people suffering from ALS (Lou Gehrig's disease) and could not operate a computer using their hands. Their idea: Use a low resolution image sensor,…
ContinuePosted on August 13, 2012 at 5:56pm
Comment Wall (3 comments)
- At 6:59am on February 28, 2011,
Hari said… Dear sir,
I'm doctoral student interested to work on these chips for 3-Dimensional position (linear motion) tracking with good precession( <3mm) , accuracy and fast update-rate(>50Hz) . If it is possible for you to design the chips to meet the above requirements, we will place an order as soon as possible. I would like to find an alternative to WII remote .
Thanks
Harinath
- At 8:44am on February 17, 2012, Nicola Massari said…
Hi Geoffrey,
I am really sorry about my late answer! Actually your question is complex and need more time to answer it. I personally think that, in general, vision sensors are complex detectors and usually need strong knowledge and in particular strong experience in visual processing in specific applications. I am not particularly expert in processing and often I trust to my intuition to design my sensors and sometimes I realize that this is not the correct way to proceed. On the other hand the potentiality of vision sensors is really high. Just think about human eye can do and how many tasks we can perform only thanks to eyes!
Thank you for your interest!
Regards
Nicola
- At 10:42pm on March 22, 2012, Paul Atkinson said…
Hi Geof,
Thanks for the comment recently. I did received the Tam2's chip yesterday. I have seen some info about how to use the 5-pins on the rox1 board such as:Vdd(onboard),Gnd(onboard),ANA(onboard),IO6 & IO7 onboard represents CLKIN AND CLB(RESET) respectively if that's the correct order or vice-versa of the two I/O pins onboard. Just like to know if those are 5 pins used for the tam2 chip?, also does ANAOUTBIAS and COLOOUTBIAS pins available on the rox1 board whereas a 1- 10k is tied to them to Gnd for bias purpose. Thanks again! with lots of appreciation.
PS. Are these lens pinhole type, if possible do you know the focal length?.
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