Hello guys, I'm here to get some advice and feedback from the Raspberry Pi Community to a project hopefully open source.
I live in a higher part of my city in a 16 floors building near a local music event and near the airport. Because of my location I thought I could make a timelapse of one year or even two years of city activity from my roof top, to do so I need a hardware kind of small and capable of self generating energy.
I thought I could use one Raspberry Pi has the main core of the hardware with a Raspberry Pi Camera Module powered by one battery with one solar panel, inside a small structure like in this project: http://www.fotosyn.com/simple-timelapse ... coffee-tin
I strongly recommend you that use a strong outdoors cabinet for your Pi Camera setup, with the appropriate Fan/Heating devices according to your location on Earth.
The Coffee tin can be useful for housing the project for some days, or even some weeks, but it will not survive to months or even years of direct weather exposure.
Joaogl wrote:For this it needs to generate its own power day and night, I need to have a way to get the data and to do so, I thought in using the lan port to connect to the raspberry pi and get the data weekly or monthly.
Some months ago I did a similar experiment for monitoring the life of some nests termites that are infecting my brick & cement house (well, in fact I think we
are infecting her
), My setup was powered for homebrew supply connected to a small UPS for sorting some shorts power outages (In my oil rich country, the unscheduled mains power cuts of 3 or more hours are common several times a month).
More or less my setup was the following:
* Raspi & Camera setup in a small tripod pointing to the invasor (?) nest
* A 5VDC & 12VDC power supply for feeding the setup (the +12VDC was for a 2watt homebrew LED lamp for the night shots, I think this particular doesn't apply for you).
* For reducing the wear & tear on the SD card, I created a RAM disk for storing & processing the stills, after the processing.
* The "processing" was simple: printing the ambient temperature, the timestamp relative to the image and some nice copyright message in to every taken still, then numbered every file in a correlative fashion for storing and later processing.
* Then, the stills were uploaded to another linux box (running CEntOs) in my local network via SFTP,
* After the observation time has expired (about 2 or 3 days), the Video was "manually" assembled (I tried to do in my CEntOs box, but I-don't-remember-right-now-was-went-wrong and ended assembling the videos in my old windows laptop).
Joaogl wrote:Where I need your advice and feedback:
- Is it worth it? even if it is just for fun?
- Is the Camera Module capable of such thing?
For sure can bring good results, as long you don't point the camera module directly to the sunrise/sunset horizon points.
Joaogl wrote:- Should I have a Camera NOIR Module for Night time?
- Should I have two bateries(one has backup)?
Since you are planning capture the events over a long period, you should have at least two independent and redundant (I mean, OR'erd to the RasPi) power supplies, for ensuring the continuous power feeding to the RaspiCam.
Joaogl wrote:- Is a solar panel capable of powering the all system?
Please have a look here:
http://www.raspberrypi.org/forums/viewt ... 79&start=0
http://www.adafruit.com/blog/2013/08/09 ... spberrypi/
I'm not affiliated to any of the providers cited in
Joaogl wrote:- Should I have some kind of cooling system on the bottom of the structure with a fan or something to cooldown the system when needed? (since its on a roof top on the summer it can get from 20Cº to 40Cº all day.)
The SoC temperature can be easily logged, also you can use this value for controlling a local fan for circulating the air inside the cabinet or turning on a heater just in case you need it.
Joaogl wrote:- Should I include some sensors to measure temperature, humidity, etc? (maybe for statistics I dont know?)
I'll be glad to help you with this particular.
Joaogl wrote:- Should I use constant video or photos.
It's up to you. I'm not an expert on that matters, But I think the direct video option can use massive amounts of disk space ..
Joaogl wrote:- How often should the data, being data the video or photos and sensors info, be collected every second or minute or hour...etc?
For the humidity & ambient temperature sensor data can be pulled every 1 or 5 minutes...some people use a ten minute interval. In my past job in meteorology we decide to monitor all the variables every minute, since this can bring more "finer" granularity data and is more easy to spot sensor failures for automated means.
Joaogl wrote:- How often would I need to extract the data from the pi? (since its max. SD capacity is 32G I think)
In the setup that I mentioned earlier, I use a small capacity (4GB) SD card, all the data collected was stored in other server with enough disk space.
Joaogl wrote:- Is there anyone that might need this data for a university project or something that I should give the data to?
Contact your local College/University/Research Institute
Joaogl wrote:- Should I consider anything else?
Having fun & learning are always good reasons!
Joaogl wrote:My goal with this is, one, have fun and learn, two, give one more open source project to the community and finally but not least, make a cheap system using recycled materials.
PS: the battery that I currently own and I'm thinking for this project has a capacity of 12000 mAh.
Thanks for your time,