Arduino Forum

Community => Gigs and Collaborations => Topic started by: pathfinderwy on Jun 04, 2019, 05:59 am

Title: Hiring arduino expert (not a joke)
Post by: pathfinderwy on Jun 04, 2019, 05:59 am
Hi, pro photographer here. Looking to hire an arduino/electronics expert (sorry if wrong forum). Looking for advice on how to build long-range LIDAR based camera trigger. I need a trigger to activate a DSLR camera. Range would be 100 meters.

The device would need:

1. Scan a road/highway constantly
2. Trigger a DSLR camera when car detected
3. Range of 50-150 meters
4. Emit a Lidar Beam diameter less than 1 meter. I don't want a lot of false-hits and want a focused area of detection.

Open to ideas and, if this is your field and you can build the trigger , hiring.
Title: Hiring an expert on sensors/arduino
Post by: pathfinderwy on Jun 04, 2019, 06:22 am
Hi, photographer here. Looking to hire an arduino/electronics expert (sorry if wrong forum). Looking for advice on how to build/buy long-range LIDAR based camera trigger. I need a trigger to activate a DSLR camera. Range would be 100 meters.

The device would need:

1. Scan a road/highway constantly
2. Trigger a DSLR camera when car detected
3. Range of 50-150 meters
4. Emit a Lidar Beam diameter less than 1 meter. I don't want a lot of false-hits and want a focused area of detection.

Open to ideas and, if this is your field, hiring.
Title: Re: Hiring an expert on sensors/arduino
Post by: jremington on Jun 04, 2019, 06:29 am
Do not double post. I've asked the moderator to move your other one to the Gigs and Collaborations section.
Title: Re: Hiring arduino expert (not a joke)
Post by: marco_c on Jun 04, 2019, 07:39 am
There is a "Gigs and Collaboration" forum that is meant for this type of request/post.
Title: Re: Hiring arduino expert (not a joke)
Post by: Coding Badly on Jun 04, 2019, 07:48 am

Threads merged.

Title: Re: Hiring arduino expert (not a joke)
Post by: zwieblum on Jun 04, 2019, 08:40 am
Interesting project, but are you sure you will want to pay the price for a LIDAR? Anyway, what is the budget and timeframe? (And you can answer me with a PM, if you prefer).
Title: Re: Hiring arduino expert (not a joke)
Post by: Riva on Jun 04, 2019, 02:13 pm
You will need to describe your project/requirements in more detail.

Are you wanting LIDAR to just detect the presence of a car or also measure the distance to it?

If your only wanting to detect the car then maybe you could mount a wireless device on the road where you want the car to be detected and it sends a signal back to trigger the DSLR.
The detector could be magnetic, beam break, radar to name a few.
Title: Re: Hiring arduino expert (not a joke)
Post by: jremington on Jun 04, 2019, 05:16 pm
For some ideas, see this incredible LIDAR 3D mapping project (http://www.eevblog.com/forum/projects/hobby-lidar-build/msg1567591/), using the Lidar-Lite from Garmin (40 m range).
Title: Re: Hiring arduino expert (not a joke)
Post by: wvmarle on Jun 04, 2019, 05:18 pm
You want to detect the car from a distance of 100m, right? That's also where the camera is?

Can you give a sketch of your project as I'm joining the ranks of "sounds interesting but I don't get what you really want".
Title: Re: Hiring arduino expert (not a joke)
Post by: pathfinderwy on Jun 04, 2019, 07:04 pm
Thank you all for your reply and not beating me up too badly.

Answers:

1. Timeline is 1 week after all materials bought. I buy all materials of course for you. Send them to you.

2. Trigger would be mounted on my house. So maybe elevation of 5m.

3. Want a trigger that is right next to DSLR camera. Not a trigger that is wirelessly tethered to camera that is some distance away. I'd like trigger and camera very close to each other.

4. Trigger just for presence of car. Not distance or speed.

5. Budget flexible. Let's talk if interested. I have other projects too.

Thanks so much again. Awesome little world of electronics. If I wasn't an art major...this would've been great hobby.
Title: Re: Hiring arduino expert (not a joke)
Post by: pathfinderwy on Jun 04, 2019, 07:14 pm
Maybe something like this to start:

https://www.sparkfun.com/products/15180

Title: Re: Hiring arduino expert (not a joke)
Post by: wvmarle on Jun 04, 2019, 08:01 pm
1. Timeline is 1 week after all materials bought. I buy all materials of course for you. Send them to you.
Buy and have shipped directly makes more sense.

Quote
3. Want a trigger that is right next to DSLR camera. Not a trigger that is wirelessly tethered to camera that is some distance away. I'd like trigger and camera very close to each other.
Mechanical or electronic trigger?

Quote
4. Trigger just for presence of car. Not distance or speed.
Do you want to make a distinction between car and person appearing? Car and truck? Car and elephant? All have their own challenges.

Easiest is "make photo when something appears". Basically a camera trap. Taking a photo is cheap; you can easily sort through the photos later.
Title: Re: Hiring arduino expert (not a joke)
Post by: zwieblum on Jun 04, 2019, 09:55 pm
Some other thoughts:
- should it work at night?
- in bad weather?
- rain and snow?
- on dark cars, too?
Title: Re: Hiring arduino expert (not a joke)
Post by: pathfinderwy on Jun 05, 2019, 01:02 am
Awesome replies.  Here were my thoughts:

1. Yes, a 'car trap'.  Don't need to take pictures of people and not sure can even do so at that distance anyway. Just car.

2. Not sure if mechanical vs electronic trigger...how is a DSLR Nikon camera triggered? Here is a sample trigger using IR/sound:

https://www.bhphotovideo.com/c/product/1074910-REG/miops_miops_n2_miops_for_nikon_2.html/?ap=y&gclid=Cj0KCQjwrdjnBRDXARIsAEcE5YmgdYsnQ03fx77Qq4QK_r6JRWvMcDpKgvTSjDZ2mjAUsRaHmDE3kz0aAplUEALw_wcB&lsft=BI%3A514&smp=Y

3. Would like it to work in poor weather, on dark cars etc.

 
Title: Re: Hiring arduino expert (not a joke)
Post by: wvmarle on Jun 05, 2019, 04:50 am
The most reliable car detection is by induction loop in the tarmac. It'll detect any big hunks of metal basically, regardless of the weather, rain and snow, whatever. It will work. You'd need a link (wireless makes most sense) between the point where you want to detect the car and the camera.

I don't see an easy way of detecting a car from 100m distance. LiDAR doesn't normally get that far.

2. Not sure if mechanical vs electronic trigger...how is a DSLR Nikon camera triggered?
I'd suggest you have a good look at your camera, and check the manual of it on how to trigger it. That link is obviously an electronic trigger.
Title: Re: Hiring arduino expert (not a joke)
Post by: zwieblum on Jun 05, 2019, 09:11 am
Wen I made a panaorama image device for a friend, we went to using a mechanical wire trigger on Nikon. IR is fine, but not that reliable (and you have to mount it somewhere where the camera sees it)
Title: Re: Hiring arduino expert (not a joke)
Post by: Riva on Jun 05, 2019, 06:01 pm
3. Want a trigger that is right next to DSLR camera. Not a trigger that is wirelessly tethered to camera that is some distance away. I'd like trigger and camera very close to each other.
The camera would remain at your house just a small (hidden) wireless transmitter near the point you want to detect the car that when triggered sends a signal to a receiver next to your camera and the receiver triggers the camera shutter.
Title: Re: Hiring arduino expert (not a joke)
Post by: pathfinderwy on Jun 05, 2019, 08:50 pm
Yes, electronic trigger looks right. 

Lidar speed guns have a range of 1000m+, so it would seem possible to detect cars at 50-100m, right? I mean, here is a module that detects up to 180m:

https://www.sparkfun.com/products/15180

Nice idea but I can't do an induction loop in the road. 
Title: Re: Hiring arduino expert (not a joke)
Post by: wvmarle on Jun 06, 2019, 04:05 am
In ideal circumstances, it can get that range. Certainly not in the rain or snow.
Title: Re: Hiring arduino expert (not a joke)
Post by: zwieblum on Jun 06, 2019, 10:48 am
Speedguns (that sort used by pocice) are expensive and the opening angle is bigger than your defined 0.6°. And the operation proncipal is not the same as in your application. You need a kind of switch for object moving perpeniculat to your line of sight, not parallel to your line of sight.

Please look at the datasheet of https://www.sparkfun.com/products/15180 (https://www.sparkfun.com/products/15180): 180m@90% reflectivity,70m@10% reflectivity / 130m@90% reflectivity&100Klux, 50m@10%reflectivity&100Klux --> You will detect new white cars at 100m distance in clear weather.

Title: Re: Hiring arduino expert (not a joke)
Post by: zoomx on Jun 06, 2019, 04:17 pm
Just other questions
After resolving the car detecting task there is the photo task.
Which lens do you use?
Camera will be fixed? Car arrive from one direction only?
What about a photo taken in night? Long exposure mean a blurry car image.
What about photo taken in bad weather condition? In heavy rain, for example.

Title: Re: Hiring arduino expert (not a joke)
Post by: wvmarle on Jun 06, 2019, 05:10 pm
What about photo taken in bad weather condition? In heavy rain, for example.
Just mount some wipers on the camera lens, what's the problem?
Title: Re: Hiring arduino expert (not a joke)
Post by: zoomx on Jun 06, 2019, 05:51 pm
What about heavy snow? Or simply fog?
Title: Re: Hiring arduino expert (not a joke)
Post by: pathfinderwy on Jun 07, 2019, 09:46 pm
Don't worry too much about details. I wanna pay someone $1200-$1500 for help prototyping this thing. I have reasonable expectations around performance and it does NOT need to be perfect.  If interested and experienced, shoot me a message. thanks!
Title: Re: Hiring arduino expert (not a joke)
Post by: bobcousins on Jun 08, 2019, 04:16 pm
Don't worry too much about details.
Well, engineers have to worry about details, because if the details are wrong, then it doesn't work => unhappy customer.

For example, a range finder will return the range of whatever is pointed at. It can't tell the difference between a car, a fence, etc. Something like the TF03 may be able to reliably detect the difference of a few meters, maybe not.

Looks like a fun project, I might even get a TF03 to play around with. Either way, this is really a research project.
Title: Re: Hiring arduino expert (not a joke)
Post by: wvmarle on Jun 08, 2019, 05:06 pm
The devil is in the details. That's why details matter - and where management and engineering always clash.

The one detail that is still missing from here is how to actually detect those cars from that distance, allowed false positives, allowed false negatives, etc.

All I know is you can't put an induction loop in the road. Well, seriously, that comes as no surprise. But unsure to me is what you CAN place at/near the road, if anything at all.
Title: Re: Hiring arduino expert (not a joke)
Post by: J-M-L on Jun 16, 2019, 11:52 am
As the end goal seems to take a picture 100m away, weather and lighting conditions should matter much, right? If you were To correctly detect the presence of a car but can't take a good picture, what's the value of the information?

If that's a right assumption I would build a system based on a video constant scan of the precise location (requires great optics) where you want to see a car and use Model based AI to recognize a car which would then trigger the photo capture from another camera which would have the right aperture, zoom etc...

This probably could run easily on a modern smartphone (or possibly a RPi) connected to a Input video stream as they embed google tensorflow - with good quality and enough training the code could even tell you the brand of the car :)


The LiDAR approach if you 'hit the road' with an angle (ie if the signal does not disappear on the horizon) will not be super  as at that distance i doubt you get the precision to measure the change in hitting the car versus the road (+/- 1m precison at 100m means potential 2m variations between measures)
Title: Re: Hiring arduino expert (not a joke)
Post by: zwieblum on Jun 16, 2019, 01:25 pm
Na, that would be too easy. Just imagine, juo could simply do a "apt-get install motion" and had a ready to go soluton. No way!
Title: Re: Hiring arduino expert (not a joke)
Post by: zoomx on Jun 16, 2019, 04:51 pm
Taking a good picture 100m away during night can be very expensive.