1. The document describes an instrumentation project to create an automatic plant fertilization system based on soil humidity using an Arduino microcontroller and YL-69 sensor. 2. The system monitors soil humidity levels and automatically activates a pump to supply fertilizer when the soil is dry, as indicated by humidity levels below a threshold. 3. The project aims to understand microcontroller functions and build a simple automatic fertilization system using affordable components like an Arduino, sensor, LEDs, relay, and pump.

1. INSTRUMENTATION PROJECT
AUTOMATIC PLANT FERTILIZATION, BASE ON SOIL HUMIDITY
UTILISING YL-69 SENSOR

2. THANKS TO INSTRUMENTATION
LECTURERS
Name As
C. Bambang Dwi Kuncoro, ST., MT. Supervisor and Lecturer
Muhammad Arman, ST., S.Psi., M.Eng. Lecturer
Ary Surjanto, ST., MT. Lecturer
Drs. Ismail Wellid, MT. Lecturer

3. TITO RIYANTO
(151611030)
Fabia Febriyanti
(151611008)
Reynaldi
Dermawan
(151611023)
CREATED BY

4. PURPOSE
1. Understand the using of Arduino Uno Mikrocontroler
2. Understand the funtion of Yl-69 Sensor
3. Understand the step of fertilizational control base on humidity
parameter
4. Build the simple automatic fertizition system by simple technology
based

5. PLAN1
SCHEMATIC PROCESS2
COMPONENTS3
PROTOTYPE4
PROGRAM5
TOPICS
WIRING6

6. 1. Set up the humidity level of the soil based on the
ideal humdity level of a plant, Ex : 78,20%
2. When the plant humidity is enough,then the red
light will be turned on, and the AC pump will be
turned off
3. If the soil humidity level less than its requirement,
then automatically the red light will be switched off.
4. The green light and the AC Pump switch on
5. After the humidity level is achieved , the AC pump
will be turned off as well as the green light
PLAN1

7. SCHEMATIC PROCESS2
Fertilization
Time
Solid State
Relay On
AC pump
on

8. COMPONENTS3
1. PROJECT BOARD

9. COMPONENTS3
2. ARDUINO UNO

10. COMPONENTS3
3. SENSOR YL-69
This is a simple water sensor can be used to detect soil moisture
when the soil moisture deficit module outputs a high level, and vice
versa output low. Use this sensor produced an automatic
plant watering device, so that the plants in your garden without
people to manage.

11. COMPONENTS3
3. SENSOR YL-69

12. COMPONENTS3
4. LED

13. COMPONENTS3
5. RESISTOR
A resistor is a specialized electrical component that provides
resistance as a circuit element. Resistors are passive, which means
they are not affected by the current they carry.

14. COMPONENTS3
6. AC PUMP

15. COMPONENTS3
7. CABLE
male-male female-female male-female

16. COMPONENTS3
8. RECYCLED AQUARIUM

17. COMPONENTS3
9. SOLID STATE RELAY

18. COMPONENTS3
9. SOLID STATE RELAY
A solid-state relay (SSR) is an
electronic switching device that
switches on or off when a small
external voltage is applied across its
control terminals .

19. COMPONENTS3
10. PIPE

20. COMPONENTS3
11. PCB

21. COMPONENTS3
12. TOOLKITS

22. COMPONENTS3
13. BOARD BASE

23. COMPONENTS3
14. OBJECT PLANT CELERY
Type of Plant
Division : Spermatophyta
Sub Division : Angiospermae
Class : Dicotyledonae
Familly : Apiaceae
Genus : Apium
Spesies :Apium Greveolens

24. COMPONENTS3
14. OBJECT PLANT CELERY
Term Growth :
1. The temperature at seedling 9-20 ⁰C, 15-24 ⁰C while further
growth.
2. Soil Moisture 78-90% moisture.
3. Irradiation is sufficient sunlight.
4. The optimum rainfall of 60-100 mm / month .
5. Ideal Soil: Fertile, organic matter, air and water good governance.
6. The optimum pH from 5.5 to 6.5.
7. Raising altitude 1000-1200 mdl example in Lembang and Cianjur.

25. COMPONENTS3
15. FERTILIZER
Nitrogen : 16%
Posfat : 16%
Kalium : 16%
Kalsium : 6%
Magnesium : 0,5%

26. COMPONENTS3
15. FERTILIZER
1. Stimulate and promote the growth of leaves.
2. Stimulate new leaf buds and twigs.
3. Accelerate the formation of flowers and fruit.
4. Prevent plants from wilting of leaves, flowers and fruit.
5. Prevents plants from the loss of leaves, flowers and fruit.
6. to make a plant be green leaves and fresh
BENEFITS

27. PROTOTYPE4
Created in SketchUp

28. PROTOTYPE4
That is the design project of automatic fertilization
based on soil humidity utilising Ardunio and YL-69
Sensor. With the 4 inch pipe for growing media and
watering medium using 5/8 inch pipe

29. Start
Humidity (Pin 𝐴0)
Take Humidity Data
If Threshold
Value < 800
Green LED
On
Dry
Pump On
Wet
Red LED On Red LED On
YESNO
Flowchart Program

30. PROGRAM5

31. PROGRAM5

32. WIRING6

33. How The Program’s Work ?
In the program it written if we have the threshold value and the threshold
value is 800 (based on which plant we choose) as
800
1023
𝑥 100% = 78,20 %.
Thus, when the value detected by the sensor shows less than the threshold
value , the red LED will shut down or Off. Menawhile, green LED and the
pumps would turn on. That indicates that the plant needs to fertilization. In
reverse, when the value hits more than the mentioned value or equal to that,
red light will turn on meanwhile green light and the pump will shut down.
This indicates that the plant does not need the fertilization.

34. TRIAL DATA

35. TRIAL DATA
NO TRESHOLD VALUE
INDICATOR
PUMP
GREEN LED RED LED
1 121 ON OFF ON
2 121 ON OFF ON
3 122 ON OFF ON
4 122 ON OFF ON
5 123 ON OFF ON
6 830 OFF ON OFF
7 900 OFF ON OFF
8 1000 OFF ON OFF
9 873 OFF ON OFF

36. REFERENCES
• Art, Edgaras. 2015. “Arduino and Soil Moisture Sensor YL-69”. https://www.youtube.com/watch?v=BKp4ib1UQj8. [ 7
November 2016].
• Dahrul. 2011. “Budidaya Seledri”. http://agrocultural.blogspot.co.id/2011/03/budidaya-seledri.html. [ 7 November 2016].
• Devil, Tasmanian. 2015. “Arduino using a yl-69 and yl-38 moisture sensor”.
https://www.youtube.com/watch?v=EjJW0_VET8I. [ 7 November 2016].
• Hendri, Suhendri. 2013. “Arduino Uno”. http://belajar-dasar-pemrograman.blogspot.co.id/2013/03/arduino-uno.html. [ 7
November 2016].
• Lewi, Bagas. 2015. “Penyiraman dan Pemupukan Tanaman Otomatis berbasis Mikrokontroler”.
https://www.youtube.com/watch?v=rm5JhvnYHo4. [ 7 November 2016].
• Random Nerd Tutorials. 2016. “Guide for Soil Moisture Sensor YL-69 or HL-69 with Arduino”.
https://randomnerdtutorials.com/guide-for-soil-moisture-sensor-yl-69-or-hl-69-with-the-arduino/. [ 7 November 2016].
• Teknik Elektronika. 2015. “Pengertian LED dan Cara Kerjanya”. http://teknikelektronika.com/pengertian-led-light-
emitting-diode-cara-kerja/. [ 7 November 2016].
• Wardana, Kusuma. 2016. “Tutorial menggunakan Sensor Kelembaban Tanah YL-39 dan YL-69 pada Arduino”
https://tutorkeren.com/artikel/tutorial-menggunakan-sensor-kelembaban-tanah-yl-39-dan-yl-69-pada-arduino.htm. [ 7
November 2016].
• Wiki Komponen. 2016. “Prinsip dan Cara Kerja Pompa Air”. http://www.wikikomponen.com/prinsip-dan-cara-kerja-
mesin-pompa-air/. [ 7 November 2016].