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The development of red chili cultivation has not been so good in the conventional way, namely farming, technology of modern cultivation systems is needed, namely microcontrollers - sensors, aeroponic systems and greenhouses, as well as observing environmental conditions including oxygen. To observe the condition of oxygen, it was necessary to experiment with integrated equipment of aeroponic and green house microcotrolers which were carried out for 3 trials in the morning, afternoon and evening. In the morning the data collection was carried out at 9:00 a.m. to 10:00 p.m. Figure 5 is the result of oxygen monitoring in the morning. The set point needed for oxygen is 15 to 20 ppm (Part Per Milion). On oxygen control less than 15 ppm, pure oxygen will be given, but if the oxygen level exceeds 20 ppm the fan will be wrong to reduce the oxygen gas content around the roots of the red chili plant.