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Figure 1. Block Diagram for Formaldehyde Detection in Food Ingredients In this study we design a system block diagram is a set of activities that describe in detail how the system will run, designing details of the system to be made so that the system is in accordance with the requirements set in the system analysis stage. This system design aims to determine the source of input, data processing, and output carried out by the system. The components needed in the block diagram are the Arduino Uno, the HCHO sensor, relay, start button, fan button, LCD, and the LM2596 stepdown module [6], [7]. The block diagram design can be seen in Figure 1.

Figure 1 Block Diagram for Formaldehyde Detection in Food Ingredients In this study we design a system block diagram is a set of activities that describe in detail how the system will run, designing details of the system to be made so that the system is in accordance with the requirements set in the system analysis stage. This system design aims to determine the source of input, data processing, and output carried out by the system. The components needed in the block diagram are the Arduino Uno, the HCHO sensor, relay, start button, fan button, LCD, and the LM2596 stepdown module [6], [7]. The block diagram design can be seen in Figure 1.

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eT ee a, SE Re a oe eT ee In the complete circuit above, this circuit consists of arduino uno, HCHO sensor, start button, fan button, relay, 16x2 LCD, and LM2596. The HCHO sensor circuit consists of one sensor module, and this sensor functions to detect formaldehyde levels in the food ingredients to be tested,
eT ee a, SE Re a oe eT ee In the complete circuit above, this circuit consists of arduino uno, HCHO sensor, start button, fan button, relay, 16x2 LCD, and LM2596. The HCHO sensor circuit consists of one sensor module, and this sensor functions to detect formaldehyde levels in the food ingredients to be tested,
The power supply is used to supply electric current so that the electric current becomes unidirectional. The power supply output voltage in this circuit is 12.30 volts. The power supply components can be seen in Figure 3. BIG ULS We LUWEL VUVPPLY CUHIVPULHELILDS The HCHO sensor is used to detect formaldehyde in gaseous food ingredients and the esults will be displayed on the LCD. And the result of the multi meter test is 1.67 volts when the ood ingredients are detected by formalin. And when the food does not contain formalin, it changes 0 0.15 volts as can be seen in Figure 4 a-b.
The power supply is used to supply electric current so that the electric current becomes unidirectional. The power supply output voltage in this circuit is 12.30 volts. The power supply components can be seen in Figure 3. BIG ULS We LUWEL VUVPPLY CUHIVPULHELILDS The HCHO sensor is used to detect formaldehyde in gaseous food ingredients and the esults will be displayed on the LCD. And the result of the multi meter test is 1.67 volts when the ood ingredients are detected by formalin. And when the food does not contain formalin, it changes 0 0.15 volts as can be seen in Figure 4 a-b.
Design and Manufacture of Formaline Detection in Food Ingredients... (Siska Narulita Siboro)
Design and Manufacture of Formaline Detection in Food Ingredients... (Siska Narulita Siboro)
The following is a test of formaldehyde detectors on food ingredients as a whole can be seen in Table 1. Login : Jurnal Teknologi Komputer, Vol. 14, No. 2, December 2020: 363 - 367
The following is a test of formaldehyde detectors on food ingredients as a whole can be seen in Table 1. Login : Jurnal Teknologi Komputer, Vol. 14, No. 2, December 2020: 363 - 367
Figure 5. a. LM2596 Stepdown Module Components, b. Component Detection Button when not Pressed, c. Key Detection Component when Pressed, d. Series of Designing and Making Formaldehyde Detectors in Arduino-Based Food Ingredients. rormaln Ls INot Vetected lor FOod ingredients. The LM2596 Stepdown Module is used to reduce the voltage from 12 volts to a voltage of 5 volts whose function is to provide a working voltage to a circuit that requires a voltage of 5 volts. The output voltage on the LM2596 stepdown module is 4.97 volts. The LM2596 stepdown component can be seen in Figure 5a. The detection button is used to start the formalin detection process. The component of the detection button when not pressed can be seen in Figure 5b and when pressed can be seen in Figure 5c. Display of a series of tools for designing and making formaldehyde detectors in arduino-based foodstuffs. This circuit uses the HCHO sensor and a button as input. Arduino Uno as a process or controller. Relay, fan and LCD as output as Figure 5.d.
Figure 5. a. LM2596 Stepdown Module Components, b. Component Detection Button when not Pressed, c. Key Detection Component when Pressed, d. Series of Designing and Making Formaldehyde Detectors in Arduino-Based Food Ingredients. rormaln Ls INot Vetected lor FOod ingredients. The LM2596 Stepdown Module is used to reduce the voltage from 12 volts to a voltage of 5 volts whose function is to provide a working voltage to a circuit that requires a voltage of 5 volts. The output voltage on the LM2596 stepdown module is 4.97 volts. The LM2596 stepdown component can be seen in Figure 5a. The detection button is used to start the formalin detection process. The component of the detection button when not pressed can be seen in Figure 5b and when pressed can be seen in Figure 5c. Display of a series of tools for designing and making formaldehyde detectors in arduino-based foodstuffs. This circuit uses the HCHO sensor and a button as input. Arduino Uno as a process or controller. Relay, fan and LCD as output as Figure 5.d.
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