Wie programmiere ich meinen ersten Mini-Computer?

1. 00:00In today's lesson. we're doing a stakeout for
2. 00:03build your flowers so that no longer has to dry up.
3. 00:06For this you need your ESP32 microcontroller, the
4. 00:10Plug-in board, the Soil moisture sensor, 3 jumper cables
5. 00:15and a plant. The Jumper cables are needed, because
6. 00:18you have to connect the cables to the Soil moisture sensor not so in
7. 00:21plug in the plug-in board because there are no pins.
8. 00:24are on it. The structure is super fast, because
9. 00:28you only need the three pins of your Soil moisture sensor with
10. 00:31extend the jumper cables and then into the plug-in board
11. 00:33I have to put it in. Use for this we 3.3V and GND to get the
12. 00:38Sensor with current to and pin 13 to supply the
13. 00:41to read the values. The Soil moisture sensor plugged in
14. 00:44you then into the earth of your plant.
15. 00:47It's the same with us. Now, we want to remove the moisture
16. 00:50of the earth and dependent on the of which the built-in
17. 00:53LED of the microcontroller light up, if the
18. 00:57plant needs water.
19. 00:58Then we know about it. can water the plant.
20. 01:02We want the LED only glows when the plant is
21. 01:05water required, therefore we use the Logic block.
22. 01:09with a suitable
23. 01:10Condition to create a branch.
24. 01:13To set the values of the soil moisture sensor
25. 01:15to experience, we use the block "read analog" for pin 13.
26. 01:20There we expect Values from 0 to 4095. Now.
27. 01:26you can decide for yourself, when your flower was watered
28. 01:29should be. One high value means that
29. 01:32the earth is dry. We now specify that all
30. 01:35Values above 4000 "too dry". and switch the LED on.
31. 01:40As a reminder: The Build-In LED goes on when we
32. 01:44set them to LOW. Now we turn the LED on yet
33. 01:48if we don't water it. I have to. Then we lay
34. 01:52for 100 milliseconds a We'll take a break, since we're going to
35. 01:55not ask so often I have to. Ten times a second
36. 01:59is quite enough. Now you can already see from afar
37. 02:05to see if you're gonna be you should be watering. Besides
38. 02:08we show you in a later lesson about how you can
39. 02:12the values online in a Display diagram
40. 02:14and so also on vacation
41. 02:16always know how your plants are.
42. 02:20Here you can you can check our plant monitoring
43. 02:22in action. as soon as the water humidifies the earth
44. 02:25has made enough, the LED off and on again,
45. 02:28when the earth is too dry will be. We have the reflection
46. 02:31the LED on the flower pot with a red dotted
47. 02:34circle, because at our recording a Jumperkabel
48. 02:37the LED's a little obscured. The project can be
49. 02:40of course also with a Extend the water pump by
50. 02:43the plant automatically to irrigate. A peristaltic pump
51. 02:46is suitable for Example very good. Then you must
52. 02:49you don't have to do it yourself anymore. water.
53. 02:52It can also be used in this project to problems are coming. For example
54. 02:57you don't have to take use serial monitor
55. 03:00while you're watching the LED you want to light up.
56. 03:03We had in the lesson to the pins that
57. 03:07the pin, which is connected to the LED is connected, actually, for
58. 03:11serial communication is meant to be. Through the
59. 03:15USB connection, also universal Serial Bus, this data will be
60. 03:20then in the serial monitor is displayed. So if you're gonna
61. 03:25the values from the sensor with View the Serial Monitor
62. 03:29you shouldn't want to be simultaneously control the LED.
63. 03:32And the other way around. you want to control the LED,
64. 03:36you should be able to see the blocks remove the messages, send them to
65. 03:40send the computer.
66. 03:42This ends week one. Next week, we'll be launching
67. 03:46then with an overview about different
68. 03:48Types of engines.

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