OpenSprinkler Forums Hardware Questions OpenSprinkler Pi (OSPi) Large OpenSprinkler Pi System Re: Re: Large OpenSprinkler Pi System




Im working in big project too. My goal is to have an OSPi and 11 extension boards. Each extension board is 50 m from each other, with an distance of 550 m

I allready tested at the midle of the distance and i noticed that i have signal to extension boards but is not enought to turn on the valves.

With the FTP cable that i use to connect each extension board i use 2.5 mm power cable for 24V AC.

This power came from the same power supply.

So if i connect the 3x GND from FTP cable to GND at 2.5 mm power cable (24V AC), in this way the valves work fine. Tested with 1x extension board at 300 m from OSPi.

But now i having some trouble, when i try to connect the 5x extension board there is no answer from OSPi.

My question: using the interval program is there any limitation of extension boards? We need to change the code?