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by yop
Thu Jan 24, 2013 6:51 pm
Forum: Automation, sensing and robotics
Topic: Photovoltaic/solar systems monitoring
Replies: 117
Views: 57791

Re: Photovoltaic/solar systems monitoring

I'll stop drinking asap, i promess. Here is the link for the epsolar protocol. 3 pin usefull txd rxd gnd, im happy i didnt try to plug in to a ethernet port as 12v is send from the other pin (wich we could use to power the raspi?) http://db.tt/knGFNSfO By the way, epsolar didnt answer at all, its an...
by yop
Thu Jan 24, 2013 10:53 am
Forum: Automation, sensing and robotics
Topic: Photovoltaic/solar systems monitoring
Replies: 117
Views: 57791

Re: Photovoltaic/solar systems monitoring

Hi I finaly got the protocol info about epsolar lcd screen. The screen is the same for all epsolar controler so it would be nice to add it to this monitoring software. Epsolar are cheap a will probably apear in many house. I'll try to work on my side because as explained earlier im working on a proj...
by yop
Thu Jan 24, 2013 10:44 am
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

Hope this would work

http://db.tt/knGFNSfO


Hope we will do a nice interfacing to play with :-)
by yop
Thu Jan 24, 2013 10:00 am
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

I finaly got an answer from the german resseller of epsolar so we will communicate easily with the epsolar now. As i cant attach neither .doc .pdf or send a zip here i'll try to post it somewhere later this day. It seem simple to do. Maybe directly trough ethernet after cutting the alim wire of the ...
by yop
Wed Jan 23, 2013 3:40 pm
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

Why is it so expensive in norway? 20years ago solar panel was out of price but now.. You can watch on ebay, write in maybe. ( panneaux solaires ) There is a guy in belgium who sell chinese panel for cheap (3x125w for around 300€) Also this is definitly a good idea to put them full south as you wilm ...
by yop
Sun Jan 20, 2013 1:51 am
Forum: Automation, sensing and robotics
Topic: Modulable OS solar controler/logger
Replies: 1
Views: 418

Re: Modulable OS solar controler/logger

Can i use python to do this as i need a permanent mesurement of the current? Voltage is less needed, every few seconds is enough. Relay must be able to be open immediatly. As quick a possible, far under a sec is necessary. As well as the current mesurment. So in case many relay are on and a cloud is...
by yop
Sat Jan 19, 2013 9:35 pm
Forum: Automation, sensing and robotics
Topic: aquarium temperature sensor with email
Replies: 5
Views: 1904

Re: aquarium temperature sensor with email

I discovered thinkerforge product yesterday (I know i do ads but i find it so cool) They provide cheap modulable things you can plug to your rasp; you should have a look , they got temps sensor and IR temps sensor so you can mesure, the glass temp and maybe 20cm under water or maybe a stone or somet...
by yop
Sat Jan 19, 2013 9:24 pm
Forum: Automation, sensing and robotics
Topic: Modulable OS solar controler/logger
Replies: 1
Views: 418

Modulable OS solar controler/logger

Hi there, I'm working on a project to control and monitor any renewable energy source with a raspi for off-grid system. Not really satisfied with market product who are expensive and not evolutive so I start thinking about my own controller. Actually pro sell you an equilibated system (solar power, ...
by yop
Sat Jan 19, 2013 5:52 pm
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

Well, im really aware about solar things but not about electronics. Like for the relay card i juste learned to use mosfet piloted or to add diode 'de roue libre' (sorry i dont know in english) to avoid inductances when tension change. The point of opennsources communitys is to share knowledge. So im...
by yop
Sat Jan 19, 2013 4:56 pm
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

No they came from belgium and germany but i appreciate you take some, i cant handle all by myself, i also need a computer working :-) On the epsolar, i got 3x3 80w pv So its about 60voc 5amp each 3 string. So 60voc 15amps input Can your adc pi board handle this? Otherwise i think i will use the rasp...
by yop
Sat Jan 19, 2013 1:54 pm
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

It would not be tje same as the LCD. It is said that the lcd refresh every 10sec. So its just a toy.

There must be some way to do it. But it look like a really bad hack :-)



For voltage mesurement, have a look to tinkerforge website :-)
by yop
Sat Jan 19, 2013 1:46 pm
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

I would not trust the number either. I wrote to epsolar but no answer yet. If there any way to mesure with a rasp before the mppt (so mesure 60v *A) i dont need to talk to the regulator. Because i want to dynamicaly plug/unplug more pv in order to always charge at full rate. But as mppt can charge l...
by yop
Sat Jan 19, 2013 4:36 am
Forum: Automation, sensing and robotics
Topic: Power monitoring with Raspi
Replies: 3
Views: 1684

Re: Power monitoring with Raspi

Hi is it possible with dc ?
I really need some cheap tool to mesure 0-150v and 0-30amps in DC.
Precise a least 0.5A, more is better.

I need to control a relay board depending on power mesurement.

Thanks a lot!
by yop
Sat Jan 19, 2013 3:39 am
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

And panel and batterie are not that expensive. 1 can get 3kwc of pv for 2000€. So somebody stole you somewhere. Keep you battery like that. Eventually buy another panel. But no more. With the snow it should charge at full speed, this is not normal that you have so small power. Put your panel in wint...
by yop
Sat Jan 19, 2013 2:58 am
Forum: Automation, sensing and robotics
Topic: WiMAX Solarcam Pi
Replies: 24
Views: 9529

Re: WiMAX Solarcam Pi

Hi, it is really strange that you cant have more power. My house is off grid and I have a system with only one 80w 12v solar panel on a 130ah batterie. It is powering 10 3w led lights, a water pump 6amp who run for washing dish and 2adult showering, a electrificator for horse and an android phone as...
by yop
Sat Jan 19, 2013 12:14 am
Forum: Automation, sensing and robotics
Topic: Photovoltaic/solar systems monitoring
Replies: 117
Views: 57791

Re: Photovoltaic/solar systems monitoring

Hi everyone. This is a very cool project! I also have a epsolar 30a mppt with the TTL rj45 com port. I want to monitor the contrôler with the raspi, ont only to log but mainly to control a USB relais board. I explain. I got a solar array who can produce the maximum that contrôler accept. Its Ok most...

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