Search for: Log In Register OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Trouble with Zimmerman Method Tagged: zimmerman This topic has 103 replies, 22 voices, and was last updated 8 years, 4 months ago by Ray. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Trouble with Zimmerman Method