Raspberry Pi Remote Camera

HogCommander · Oct 13, 2017

W2D said:
Could you send me the phone code and RPi code? Did you use an iPhone? I’d PM you my email address.

Yep, happy to help just hit me with a PM with email address. The phone code is html and the RPi code is Node Red but this will only get you Bullseye-style turning targets. The first picture below is what I see on my phone:

Target Scan is a commercial app that you have to pay for. Second picture below is a screen shot that shows what it looks like after using the app to score a target. It's also capable of exporting scores as just data. Very cool.

gamer_jim · Oct 14, 2017

W2D said:
That’s a good idea. I looked up some reviews on that device and it’s iffy if it will work with Linux. You used it with the RPi?

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Yes, I wrote about it here:

https://www.mdshooters.com/showthread.php?p=4336253&highlight=cantenna#post4336253

My goal was to have a portable wifi extender. Particularly when we go on vacation where we have poor wifi. I wanted to set the Pi up and point the cantenna at the nearest access point, then use my android tablet to log into the Pi, connect to the wifi and then relay through the Pi.

I never got the tablet part of my plan to work. I got as far as getting the cantenna to work from the Pi but I needed ssh console to administer. I've dabbled in Android app writing so that might be fun some day to finish.

whistlersmother · Oct 14, 2017

You can get connectbot for android to get ssh console to another computer from the android - unless I misundersand what you need.

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gamer_jim · Oct 14, 2017

whistlersmother said:
You can get connectbot for android to get ssh console to another computer from the android - unless I misundersand what you need.

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Thanks, I'll check that out.

Basically all I want is to remotely tell my pi the password for an access point from my tablet.

I do have the remote ssh console but it's a pain to do from the android tablet.

W2D · Oct 24, 2017

Actually got an iPhone app to “work”. It’s a start.

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ToolAA · Oct 24, 2017

W2D said:
Actually got an iPhone app to “work”. It’s a start.

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Here let me help out a bit.

Looking forward to seeing how things progress.

W2D · Oct 24, 2017

ToolAA said:
Here let me help out a bit.

Looking forward to seeing how things progress.

Like this?

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W2D · Oct 24, 2017

Even without the camera function, it could still be a handy score pad if the user touched the screen to place where the shot hit.

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W2D · Oct 24, 2017

gamer_jim said:
Yes, I wrote about it here:

https://www.mdshooters.com/showthread.php?p=4336253&highlight=cantenna#post4336253

My goal was to have a portable wifi extender. Particularly when we go on vacation where we have poor wifi. I wanted to set the Pi up and point the cantenna at the nearest access point, then use my android tablet to log into the Pi, connect to the wifi and then relay through the Pi.

I never got the tablet part of my plan to work. I got as far as getting the cantenna to work from the Pi but I needed ssh console to administer. I've dabbled in Android app writing so that might be fun some day to finish.

The WiFi adapter arrived, along with a handful of SMA connectors to experiment with Cantennas. I’ll be going grocery shopping to find the perfect can of something edible.

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gamer_jim · Oct 26, 2017

W2D said:
The WiFi adapter arrived, along with a handful of SMA connectors to experiment with Cantennas. I’ll be going grocery shopping to find the perfect can of something edible.

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Awesome! Let us know how it goes.

Read the articles I posted in the other thread. The guy explains what the perfect sized can is and why. I'm a licensed amateur radio operator so I was able to follow the description somewhat.

I couldn't find the perfect one at the grocery store. I ended up with a large can of greenbeans. We feed the salt-free greenbeans to my dog to add filler to her meal.

Even if the can isn't perfect sized getting close enough will give you good results. You can find commercial solutions as well, pre-built long range wifi antennas but I had fun building it myself.

Good luck!

Boom Boom · Oct 26, 2017

Interesting thread. I'm curious what value you folks would see in an alternative to Pi that has:
- 4x the CPU bandwidth
- 2-4x more SDRAM memory
- the same I/O interfaces and probably more
- hardware-decoded video (likely H.265)
- user-friendly programmable hardware resources to implement custom features in hardware without affecting CPU bandwidth
- easy support for high-bandwidth expansion cards
- far better build quality
- priced around $100, maybe $75

eddiek2000 · Oct 26, 2017

Boom Boom said:
Interesting thread. I'm curious what value you folks would see in an alternative to Pi that has:
- 4x the CPU bandwidth
- 2-4x more SDRAM memory
- the same I/O interfaces and probably more
- hardware-decoded video (likely H.265)
- user-friendly programmable hardware resources to implement custom features in hardware without affecting CPU bandwidth
- easy support for high-bandwidth expansion cards
- far better build quality
- priced around $100, maybe $75

Hardkernel/ODROID has this covered:
http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438

W2D · Oct 26, 2017

Sweet!

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W2D · Nov 12, 2017

So, I got the basic functionality of totaling the score and total number of bullseyes. B4x (Basic 4 Android/iPhone/Arduino) is relatively simple programming, but still takes time to learn. I should be able to make an app for Android phones too. Still haven’t made the UDP network connection to the RPI, but I think I’m close. I did make progress getting the image processing of the target working.

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songlaw · Nov 12, 2017

Any concern about splatter harming camera?

Is there any concern about your or your neighbors’ bullet fragmenting and hitting your equipment?

ToolAA · Nov 12, 2017

W2D said:
So, I got the basic functionality of totaling the score and total number of bullseyes. B4x (Basic 4 Android/iPhone/Arduino) is relatively simple programming, but still takes time to learn. I should be able to make an app for Android phones too. Still haven’t made the UDP network connection to the RPI, but I think I’m close. I did make progress getting the image processing of the target working.

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Are you able to actually detect the shots or is the app intended to create a UI overlay onto a live video feed? Either is useful IMO.

By the way I updated my thread for my own Wireless Cam. I’ve not gotten the basic hardware down to less than $100 for under close range and about $140 for long range. (Should work to 1mi with direct line of sight).

https://www.mdshooters.com/showthread.php?t=201095

I would love to have a real app interface for tracking, recording and measuring shot groups.

W2D · Nov 12, 2017

songlaw said:
Is there any concern about your or your neighbors’ bullet fragmenting and hitting your equipment?

Yes.

. It will have to have some sandbags in front. If it’s on the ground some 25 feet in front, I should still get a good view of the target. I haven’t looked at lenses for a camera yet.

Maybe some hardened glass to protect the lens?

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W2D · Nov 12, 2017

ToolAA said:
Are you able to actually detect the shots or is the app intended to create a UI overlay onto a live video feed? Either is useful IMO.

By the way I updated my thread for my own Wireless Cam. I’ve not gotten the basic hardware down to less than $100 for under close range and about $140 for long range. (Should work to 1mi with direct line of sight).

https://www.mdshooters.com/showthread.php?t=201095

I would love to have a real app interface for tracking, recording and measuring shot groups.

That image looks like something I could process. Is that the foscam?
If been using a usb camera, but I should be able to use an ip camera just as well.
What I’m trying to do is feed the camera image into the Raspberry Pi (RPi), which takes a before and after image of the target every second or so and looking for any change. The RPi would subtract the before and after images (see post #11), then calculate the position of the center of the bullet hole to the center of the target.
The center of the target and distance to each ring is set up before hand in a startup sequence.
What would be sent back to the phone would be a single image, and the X,Y coordinates of the shot. The phone app would overlay the blue donut at the XY coordinates on the image, and determine the score.
Sounds simple, right?

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ToolAA · Nov 12, 2017

W2D said:
That image looks like something I could process. Is that the foscam?
If been using a usb camera, but I should be able to use an ip camera just as well.
What I’m trying to do is feed the camera image into the Raspberry Pi (RPi), which takes a before and after image of the target every second or so and looking for any change. The RPi would subtract the before and after images (see post #11), then calculate the position of the center of the bullet hole to the center of the target.
The center of the target and distance to each ring is set up before hand in a startup sequence.
What would be sent back to the phone would be a single image, and the X,Y coordinates of the shot. The phone app would overlay the blue donut at the XY coordinates on the image, and determine the score.
Sounds simple, right?

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Yes. This image was captured at 600yd using a Foscam HD WiFi Security Cam. I did replace the wide angle plastic lens with a more narrow and better quality glass lens which really sharpens up the image nicely. I usually set the camera about 10ft from the target.

If you ever get to the point when it’s time to build a nice enclosure please let me know. I have a small CNC machine and a decent 3D printer so I can build any parts we would need.

One thing that would also be useful is a way for Pi to correct for the image perspective distortion which will occur when the camera is positioned below the target. It’s not too bad in my image above but at some ranges you really have to post the targets high.

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W2D · Nov 12, 2017

ToolAA said:
Yes. This image was captured at 600yd using a Foscam HD WiFi Security Cam. I did replace the wide angle plastic lens with a more narrow and better quality glass lens which really sharpens up the image nicely. I usually set the camera about 10ft from the target.

If you ever get to the point when it’s time to build a nice enclosure please let me know. I have a small CNC machine and a decent 3D printer so I can build any parts we would need.

One thing that would also be useful is a way for Pi to correct for the image perspective distortion which will occur when the camera is positioned below the target. It’s not too bad in my image above but at some ranges you really have to post the targets high.

Sent from my iPad using Tapatalk

Yea, I was going to say I would have to stretch the image vertically to compensate for the low angle. Octave Image tools should have a function for that.
Maybe a + and - button on the GUI to adjust it.
The longer the lens focal lengths, the less that would be needed too.
I’ll work on that another time.

I just connected a touchscreen to the Pi so I’m not tied to the computer to program the Pi code.

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Raspberry Pi Remote Camera

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