![]() I ran the CAT6 cable between the two controllers, and connected the cable from the solenoids to the new controller.įor scheduling of the irrigation controller, I had a few different ideas, but the one I moved forward with was to use the Google Calendar integration in Home Assistant to allow turning the switches on and off based on appropriately named calendar entries in Google Calendar. So, then I was ready to start connecting the new controller. I needed 7 separate connections between the controllers to do this, and fortunately the CAT6 cable I was using had 8. This required me to wire up the solenoids such that the controllers acted as parallel switches. I also realised that if I connected the two controllers up cleverly, I could leave them both functional, meaning that I could control the solenoids through either controller. The solution I eventually came up with, was to piggy-back on the power supply in the existing Holman irrigation controller, but leave the Holman unit operating. The power supply in the Holman irrigation controller would have been suitable, but it would have been necessary to sacrifice the Holman controller to install that power supply in my new controller, which I was reluctant to do until I knew it was going to work. The 24 Vac power adaptor I had used for testing was not suitable for use outside. One of the problems I needed to solve was how to get power into the enclosure. The remaining lines send serial commands to the secondary micro-controller for the change in state of each dummy button.Īfter this, I could successfully switch the relays on and off using the Tasmota web GUI, as shown below. But, setting the baud rate to 115200 seemed to resolve that issue. I found that when the baud rate was set to 9600 the serial commands did not work after MQTT was enabled. I actually had some issues with this as the instructions I mentioned earlier proposed setting the baud rate to 9600. The first line of the rule involves setting the baud rate on startup. On Power4#State=0 do SerialSend5 A00400A4 endon On Power4#State=1 do SerialSend5 A00401A5 endon ![]() On Power3#State=0 do SerialSend5 A00300A3 endon On Power3#State=1 do SerialSend5 A00301A4 endon On Power2#State=0 do SerialSend5 A00200A2 endon On Power2#State=1 do SerialSend5 A00201A3 endon On Power1#State=0 do SerialSend5 A00100A1 endon On Power1#State=1 do SerialSend5 A00101A2 endon On System#Boot do Backlog Baudrate 115200 SerialSend5 0 endon
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