Search found 33 matches

by doodah
Fri Feb 14, 2020 8:34 am
Forum: General Topics
Topic: IDE/Serial terminal question for manual trigger
Replies: 10
Views: 3082

Re: IDE/Serial terminal question for manual trigger

Totally get it, and the other stuff you're doing is awesome. I'll put the bug request in.

Thanks!
by doodah
Thu Feb 13, 2020 10:24 pm
Forum: General Topics
Topic: IDE/Serial terminal question for manual trigger
Replies: 10
Views: 3082

Re: IDE/Serial terminal question for manual trigger

OK. I guess I must be misremembering typing into the IDE terminal. Sorry about all the back and forth. I was able to open a terminal and do just what you suggested using input(). And that's exactly what I was looking to do. If I could do that in the IDE, that would save me the extra step of opening ...
by doodah
Thu Feb 13, 2020 11:14 am
Forum: General Topics
Topic: IDE/Serial terminal question for manual trigger
Replies: 10
Views: 3082

Re: IDE/Serial terminal question for manual trigger

Ok. It sounds like opening a terminal is what I need to do. I still can't type at the prompt in the IDE, even after pressing enter. I could have sworn I was able to before, but I could very well be wrong. Even though I don't need to do this right now, it's bothering me that I can't. See attached, an...
by doodah
Wed Feb 12, 2020 11:53 pm
Forum: General Topics
Topic: IDE/Serial terminal question for manual trigger
Replies: 10
Views: 3082

Re: IDE/Serial terminal question for manual trigger

I tried opening a new terminal and got an error because I'm assuming that the IDE is using the same COM port that the new terminal uses. If not, I will try again. I'll also watch the YouTube video. I haven't put the script on the OpenMV yet. Part of that has to do with me still just playing around b...
by doodah
Wed Feb 12, 2020 5:08 pm
Forum: General Topics
Topic: IDE/Serial terminal question for manual trigger
Replies: 10
Views: 3082

IDE/Serial terminal question for manual trigger

Hi! Why can't I type anything at the prompt in the serial terminal in the IDE? I was trying to trigger the OpenMV using text entered in the serial terminal that would satisfy a conditional in my program. For whatever reason, I can't type anything into the serial terminal in the IDE though. I'm think...
by doodah
Thu Jan 30, 2020 6:05 pm
Forum: Technical Discussion
Topic: Finding small circles
Replies: 3
Views: 963

Re: Finding small circles

Picture attached with an arrow pointing at what I'm trying to locate. This is in my (messy) shop, but when it's in its intended environment, the background will be very consistent. If I can figure out how to reliably find something this small, then I can use a fisheye lens and reduce the camera coun...
by doodah
Thu Jan 30, 2020 5:16 pm
Forum: Technical Discussion
Topic: Finding small circles
Replies: 3
Views: 963

Finding small circles

I am trying to locate white circles on a dark, consistent and static background. I was originally using a standard lens and find_circles pretty successfully. I experimented with a fisheye and realized how much more area I can cover. The downside is that the circles are so small that the find_circles...
by doodah
Fri Jan 24, 2020 10:30 am
Forum: Technical Discussion
Topic: Method speed scaling to 5MP images
Replies: 3
Views: 996

Re: Method speed scaling to 5MP images

I don't really need any optimization until I can get my hands on the H7 plus, but I'd still consider offering financial support. I'll email you for more details. It's good to know that the find_circles will be faster without any optimization work. Right now, when I run find_circles at the VGA resolu...
by doodah
Thu Jan 23, 2020 10:29 pm
Forum: Technical Discussion
Topic: Method speed scaling to 5MP images
Replies: 3
Views: 996

Method speed scaling to 5MP images

Hi again! How will the various algorithms/methods scale to higher resolution images? Will it be linear with pixels? So an algorithm currently running at 640x480 will run 16x slower on a 5MP image? For now I'm using find_circles, but may be using find_blobs or difference. Frame rate isn't that import...
by doodah
Thu Jan 23, 2020 10:17 pm
Forum: Technical Discussion
Topic: Interface Library Discussion
Replies: 12
Views: 3652

Re: Interface Library Discussion

Seems ambitious, but this whole project/business is pretty ambitious so I guess it comes with the territory. Thanks!
by doodah
Thu Jan 23, 2020 10:44 am
Forum: Technical Discussion
Topic: Interface Library Discussion
Replies: 12
Views: 3652

Re: Interface Library Discussion

Excellent. I'm sure your time is limited, so I completely understand. I have no sense of how long all this would take. Would the I2C portion of it be done by the time the H7 plus is in stock? My project involves multiple OpenMV's at a higher resolution, so I'm on hold until those are available. If t...
by doodah
Wed Jan 22, 2020 2:31 pm
Forum: Technical Discussion
Topic: Interface Library Discussion
Replies: 12
Views: 3652

Re: Interface Library Discussion

This will be great to have. Writing a robust and reliable communication interface always seemed pretty daunting to me, so I appreciate the effort that will go into it. It would be really nice if one of the libraries could allow for a single Arduino to accommodate multiple OpenMV's as slave processor...
by doodah
Fri Dec 13, 2019 2:24 pm
Forum: General Topics
Topic: Communicate between Multiple OpenMV's and another board
Replies: 3
Views: 1343

Re: Communicate between Multiple OpenMV's and another board

OK. Thanks! In the uart_control example it says "Always pass UART 3 for the UART number for your OpenMV Cam." I guess I assumed that it was because the board used UART1 to communicate with the computer, like some Arduinos do. If that's available, then problem solved. Do you think daisy chaining is t...
by doodah
Fri Dec 13, 2019 9:59 am
Forum: General Topics
Topic: Communicate between Multiple OpenMV's and another board
Replies: 3
Views: 1343

Communicate between Multiple OpenMV's and another board

Hi! In past questions in this forum, I've been encouraged to use UART over I2C or SPI to communicate with another board. I have multiple OpenMV's that need to communicate with a "main" board. I was originally going to hook multiple OpenMV's to an Arduino and use SofwareSerial on the Arduino to commu...
by doodah
Sat Nov 16, 2019 3:44 pm
Forum: Project Discussion
Topic: How to send coordinate to arduino nano?
Replies: 4
Views: 2241

Re: How to send coordinate to arduino nano?

I was going to use I2C and an I2C mux to communicate with multiple cameras and an arduino. Is that a bad idea? Can the OpenMV be a good I2C slave?
by doodah
Mon Nov 04, 2019 10:33 am
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

Re: OpenMV for 5MP image?

Got it. That makes sense. Thanks!
by doodah
Fri Nov 01, 2019 2:39 pm
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

Re: OpenMV for 5MP image?

Can you explain the I2C bus limitation a little more? I guess I don't understand how a bus can be limited to only 1 device. I may not understand buses that well either...

Thanks!
by doodah
Wed Oct 30, 2019 10:48 am
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

Re: OpenMV for 5MP image?

I understand. I was just trying to describe what I was thinking, in the hope that you might think it was cool and/or potentially had a market and consider building a mux shield. As stated, it was a long shot. From your hints, I wasn't sure how the video stream would be accessed, hence my comment on ...
by doodah
Tue Oct 29, 2019 11:10 pm
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

Re: OpenMV for 5MP image?

OK. Thanks. Is there any way that this custom board could interface with the OpenMV headers the way the existing shields do? You'd need an input connector on the OpenMV and then connectors on the shield for additional cameras. The OpenMV cam would be the main camera, and you could drive the other ca...
by doodah
Tue Oct 29, 2019 10:26 am
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

Re: OpenMV for 5MP image?

I totally understand pricing. I only recently dove deeper into Raspberry Pi, and realized how "magical" their prices truly are (especially when you think about them having to limit the number you can buy of certain products.) Having spent some time with the H7 and the IDE, you're offering quite a bi...
by doodah
Fri Oct 25, 2019 2:45 pm
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

Re: OpenMV for 5MP image?

That's amazing. Nice work! Have you guys settled on a price point?

Off the top of your head, can you think of any way to hack a multiplexing option together, with 4 sensors and 1 processor?

Thanks!
by doodah
Fri Oct 25, 2019 10:39 am
Forum: General Topics
Topic: OpenMV for 5MP image?
Replies: 14
Views: 2362

OpenMV for 5MP image?

Hi! I am trying to measure the distance of a small circular object (cross section of 2.2 in^2) at distances of up to 5 meters outdoors, all around the camera. In order to do this, I mounted an OpenMV with a super telephoto lens and a laser measuring module from https://www.jrt-measure.com/ onto a pa...
by doodah
Fri Oct 11, 2019 10:29 am
Forum: Technical Discussion
Topic: Hex message with UART
Replies: 2
Views: 731

Re: Hex message with UART

Thanks for the tip! This is what ended up working for me:

Code: Select all

message = 'AA0001BE00010001C1'
uart.write(ubinascii.unhexlify(message))
by doodah
Thu Oct 10, 2019 5:50 pm
Forum: Technical Discussion
Topic: Hex message with UART
Replies: 2
Views: 731

Hex message with UART

Hi! (again...) I've looked around the internet a good bit, and can't seem to figure out the right way to send a Hex message to another devices over UART. The code below is where I'm at, with no success. Any suggestions? uart = UART(3, 19200) message = b'\xaa\x00\x01\xBE\x00\x01\x00\x01\xC1' uart.wri...
by doodah
Thu Oct 10, 2019 3:54 pm
Forum: General Topics
Topic: Error Installing Update
Replies: 6
Views: 1184

Re: Error Installing Update

Thanks! Didn't realize it was the connection the error was referring to was the internet. I moved out of my garage shop and into my house (and a different network) and it worked. Thanks!
by doodah
Thu Oct 10, 2019 1:38 pm
Forum: General Topics
Topic: Error Installing Update
Replies: 6
Views: 1184

Re: Error Installing Update

Any ideas on how to deal with this error? Or should I just reinstall?

Thanks!
by doodah
Thu Oct 10, 2019 1:33 pm
Forum: Technical Discussion
Topic: Snapshot lag in loop
Replies: 3
Views: 719

Re: Snapshot lag in loop

Thanks! That helped. I changed the code to for i in range(5): clock.tick() s2.pulse_width(700 + 425*i) time.sleep(500) img = sensor.snapshot() sensor.flush() #time.sleep(1500) It still seems to get "behind" in that the the servo has occasionally moved onto the next position before the IDE displays t...
by doodah
Wed Oct 09, 2019 10:31 pm
Forum: Technical Discussion
Topic: Snapshot lag in loop
Replies: 3
Views: 719

Snapshot lag in loop

Hi! I have an H7 attached to a Pan/Tilt module and am trying to take a series of pictures as the camera incrementally pans. As the servo increments every x degrees, it seems that the image being displayed in the IDE is from 2 positions back. I tried to add a while loop to wait for sensor.snapshot to...
by doodah
Wed Oct 09, 2019 4:00 pm
Forum: General Topics
Topic: Error Installing Update
Replies: 6
Views: 1184

Re: Error Installing Update

The OpenMV IDE resources update.
by doodah
Wed Oct 09, 2019 12:15 pm
Forum: General Topics
Topic: Error Installing Update
Replies: 6
Views: 1184

Error Installing Update

Hi!

When I choose to install the update upon opening the IDE, it hangs and eventually gives "Error Connection Closed." Any suggestions on how to get past this? It happens when the camera is plugged in and when it is disconnected.

Thanks!
by doodah
Sat Feb 02, 2019 10:35 am
Forum: General Topics
Topic: Pan/Tilt + Motorized zoom
Replies: 6
Views: 3864

Re: Pan/Tilt + Motorized zoom

Ok, cool. Thanks! So the MFT is one of the results of the FFT calculation? Good point re: the instability. This will require some tweaking, but hopefully since the zoom and focus are separately controlled it may make it easier to manage. Also, the fact that the ball will always be moving away from t...
by doodah
Fri Feb 01, 2019 5:58 pm
Forum: General Topics
Topic: Pan/Tilt + Motorized zoom
Replies: 6
Views: 3864

Re: Pan/Tilt + Motorized zoom

Thanks so much for the response. That's what I gathered. As for adjusting the focus as the zoom increases while the ball flies, is there any functionality that could detect the "blurriness" of the blob? Also, since the motors driving the lens motors are regular 8 VDC motors, I would have to control ...
by doodah
Thu Jan 31, 2019 11:43 am
Forum: General Topics
Topic: Pan/Tilt + Motorized zoom
Replies: 6
Views: 3864

Pan/Tilt + Motorized zoom

Hi! I am in the planning stages of a project that will track a ball that travels parallel to the field of view (as opposed to across it.) Imagine the camera is mounted to the top of a soccer/football goal and it is tracking a ball kicked by the goalkeeper. I'd like to use the OpenMV camera to track ...

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