OpenSprinkler › Forums › Hardware Questions › More than 3 / 5 expansion boards › Re: Re: More than 3 / 5 expansion boards
October 16, 2013 at 12:30 pm #25549
I assume you have OpenSprinkler 1.x hardware. If you increase the MAX_EXT_BOARDS, the program will require more RAM to store the station status and information etc. Unfortunately ATmega328 only has 1KB RAM space, and I am pretty sure increasing MAX_EXT_BOARDS to 4 will cause the RAM consumption to exceed 1KB, causing the mcu to fail to start.