Abstract
The ship robot uses a pH meter sensor to measure the water acidity and LDR sensors for measuring water clarity. The measurement results will be sent directly using bluetooth communication. This ship robot is made with the aim to facilitate in doing research on pH levels and water clarity level To get accurate results required sensitivity and proper sensor placement. Testing sensitivity on ship's pH robot sensors by comparing two gauges to see the difference in measurement values obtained. Sensory clarity test by looking at the change in Lux value (Lighting Refraction) based on sensor placement distance. Lux value is the readable value of the smartphone to display the clarity level in the water. Sensory clarity test using 3 samples with the clear category, somewhat clear, cloudy. The distance of sensor placement ranging from 1-5 cm. For acidity measurements, the SKU pH sensor: SEN0169 has an average accuracy of 0.06-2.33%. While on the measurement of clarity, the higher the value of lux then the higher the level of clarity and the lower the value of lux then the lower the level of clarity.
Highlights
One of the essential daily needs of living beings in this inseparable world is water
PDAM water testing is performed to see the change in the value of lux from the measurement of the sensor of clarity based on the distance specified
Comparison of measuring results can be seen in the following graph. This test is performed to see the change in the value of lux from the measurement of the sensor of clarity based on the distance that has been determined
Summary
One of the essential daily needs of living beings in this inseparable world is water. Bluetooth module used is arduino bluetooth module with type HC-05 which function to transmit data result of pH sensor and LDR sensor in detecting pH level and water clarity level. Through this bluetooth network data will be sent directly to the user and will be displayed through android smartphone that has been installed blue term applications. While figure 5 (b) is a block diagram describing the working system of pH meter sensor measurement and LDR sensor in meas-. The authors add a series of pH meter sensors and LDR sensors to measure the acidity and clarity of the water. Figure 9. placing the sensor distance using the Figure 7. pH level measurement and water cla- ruler rity
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