| dc.description.abstract | Organic fertilizers are fertilizers derived from various natural fertilizers such as manure, dead animals and plants, which are rich in minerals and good for soil enrichment. Organic fertilizers are very beneficial for increasing agricultural production both in quality and quantity, reducing environmental pollution, and improving land quality in a sustainable manner. The proposed system uses Arduino Uno as the main controller. MQ-135 sensor and MQ-4 sensor as sensors are used to measure the levels of N, P, K gases contained in chicken manure compost. The data generated by these sensors will be processed by Arduino Uno and displayed on the LCD display. Users can easily see the results of measuring macro and micro nutrients in compost. The working system of this tool is that the system will function to measure the value of macro and micro nutrients in organic fertilizer samples. This measurement uses the gas detection method. The system starts to turn on, then takes sensor data and then sends serial data. For the initialization process. Send sensor level value to slave with system using SPI communication and processed. The MQ 135 sensor measures the content of N, P, K and NH 3. The MQ 4 sensor measures the CH 4 content. Then the sensor data will be displayed on the LCD. The Results Of The Measurements Obtained In Percent Units Are: N: 10, P: 10, K: 9, Ch4: 1.28 And Nh3: 102 | en_US |
