Hi, welcome back, it's me! My team consists of four people. This project is the last project that we'll be working on in this semester. The Arduino used in this project is Arduino Uno. This time, we will be testing soil moisture sensor. My team members and I bought the sensor at An*m store, then tried an experiment on the same day, Friday, April 8th 2016. The sensor costs Rp47.500,00. Although it's kind of expensive, but a potentiometer is included in the sensor module for detecting the sensitivity of wet/dry soil.
Jessica, Eveline, Asta, and Alicia (from right to left)
Team members
We are using this post as our reference, then we built up the components like this. Our soil moisture sensor module is built using the LM393 comparator, gives the active-high (H) output,
Picture 1. Components were built
Then, we uploaded our code using Arduino IDE, and then, we put in the sensor to the soil, then the sensor tried to figure out the humidity level of the soil. Red LED indicates the standby state. While calculating the humidity level, the sensor activated the green LED.
Picture 2. Standby state
Picture 3. The sensor was calculating the humidity level
As we put the sensor into the soil, the value of humidity calculated was shown through the serial monitor. The higher the numbers, the drier the soil is.
Picture 4. The sensor was calculating the humidity
The testing video will be shown below.
Testing Video
The code link will be told in the description of the testing video.. That's it, we're done for that day. Thank you, and wait for the next post regarding the final project. Have a good day guys :)
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