1 00:00:00,180 --> 00:00:08,810 In the previous lecture, we implemented a new feature in the new Drechsler, which involves this threshold 2 00:00:08,850 --> 00:00:14,990 setting budget, which allow us to manually set the threshold above which would like the pump to begin, 3 00:00:15,690 --> 00:00:24,630 and that involved adding a bunch of nodes, including one that sends the set value for the threshold 4 00:00:24,840 --> 00:00:27,570 to the ESB 32 via this topic right here. 5 00:00:28,230 --> 00:00:36,540 So what we are going to do in this lecture is to make the necessary changes to the inability to sketch, 6 00:00:36,780 --> 00:00:38,380 which is now version three. 7 00:00:38,400 --> 00:00:47,280 This is a version that we are working on right now so that it can acquire this number from the topic 8 00:00:47,580 --> 00:00:53,430 and use it internally to decide when to send an update to the market Kitty. 9 00:00:53,730 --> 00:00:55,200 And therefore to the flow. 10 00:00:55,710 --> 00:01:00,390 So I've already implemented the changes here and I'm going to walk you through them. 11 00:01:01,020 --> 00:01:03,780 First of all, there's a new line here. 12 00:01:04,530 --> 00:01:12,180 We've got a new variable that holds the soil humidity threshold, which, as you can see, points to 13 00:01:12,360 --> 00:01:17,550 this topic, which is a topic that we are sending data from the floor. 14 00:01:17,560 --> 00:01:26,010 We send in the value for the threshold from the slow next year, the on connection established function 15 00:01:26,010 --> 00:01:30,090 of a new callback set for the threshold. 16 00:01:30,100 --> 00:01:39,360 So when the get soil humidity threshold topic has an update, then this function will fire and set the 17 00:01:39,360 --> 00:01:42,680 threshold to a local variable, which is. 18 00:01:46,440 --> 00:01:52,440 This variable here, which I've said I've got a present here to four hundred like its default value, 19 00:01:53,700 --> 00:01:58,560 so let's have a look at the callback function called set threshold. 20 00:02:01,520 --> 00:02:08,720 So here it is, Threshold will receive a string, which is the value coming from the topic, then will 21 00:02:08,720 --> 00:02:16,420 convert that string into an A. and story in the global community threshold. 22 00:02:16,970 --> 00:02:17,930 And that's about it. 23 00:02:17,960 --> 00:02:21,350 Now, the interesting thing happens right here in the report. 24 00:02:21,350 --> 00:02:29,120 So your community function in the previous version of this scourge, we only had this condition for 25 00:02:29,120 --> 00:02:36,980 the sketch to send an update or to publish the the new humidity from the sensor to the soil humidity 26 00:02:36,980 --> 00:02:37,490 topic. 27 00:02:37,940 --> 00:02:41,630 But now I'm also adding this condition. 28 00:02:41,660 --> 00:02:44,420 So this an and I'm also sending this condition here. 29 00:02:44,510 --> 00:02:51,350 So the reporting will take place also when the current humidity is larger than the soil humidity threshold, 30 00:02:51,560 --> 00:02:53,790 regardless of the range. 31 00:02:54,350 --> 00:03:00,320 So I thought this is important because this is going to allow us to to deal with said dry soil without 32 00:03:00,320 --> 00:03:05,110 having to worry about how much change there is between measurements. 33 00:03:05,150 --> 00:03:11,990 So as long as the current soil humidity as it was last measured is over the humidity threshold, then 34 00:03:11,990 --> 00:03:18,140 we'll send this information to the flow so that it can decide whether we need to pump more water into 35 00:03:18,140 --> 00:03:18,690 the soil. 36 00:03:19,100 --> 00:03:24,410 So that's about it with the modification to the sketch to give us the version three of the terrorism 37 00:03:24,410 --> 00:03:24,910 control. 38 00:03:25,430 --> 00:03:27,680 So that's one more lecture in this section. 39 00:03:27,680 --> 00:03:34,490 That's a next one where we'll do a quick test and demonstration of what we have so far to review and 40 00:03:34,490 --> 00:03:37,430 then do a preview of what we're going to do in the next section.