Abstract
Fish is one of the high-protein foods that are very helpful for the development of the human brain. Then, it is necessary to maintain the freshness of the fish for consumption. At this time, fishers and fishmongers preserve the freshness of fish by using Ice in the fish storage. However, it is considered ineffective due to improper ice change time. Therefore, monitoring temperature is very important and helpful to find the right time when replacing the Ice used to ensure the quality of fish. The development of this device uses Arduino ESP32, DHT21 Sensor, Micro SD Module, Internet of Things system, monitoring using Blynk Application and notifications using Telegram App. DHT21 sensor test results obtained a data conformity level (Error Level) of 2%. At the fish storage room temperature, there is the lowest temperature of 10.50 oC and ice temperature conditions in the storage of 0 oC. Therefore, the best state to keep fish fresh that researchers want is 0 oC to 2 oC at ice temperatures or 11.50 oC obtained in testing the time it takes to replace Ice by about 10 hours.
Highlights
Fish is one of the high-protein foods that help the development of the human brain
In the implementation of the device, the storage area used is a box made of styrofoam cork that can maintain the temperature inside the storage so that it is not affected by the temperature from outside the storage area
The results of the testing data of mini-size fish storage equipment began with testing using a fish storage place made of Styrofoam cork with a size to withstand the cold temperatures inside the storage area
Summary
To maintain the freshness of the fish to be consumed, the fish storage process must be as well as possible. Modern fish storage containers are pretty expensive, and users only use a container filled with ice cubes as a cooler to keep the fish fresh for a few days. Conventional fish storage that exists today has several drawbacks. One of the drawbacks is when the user wants to know the stored ice supply. Stored ice supplies will affect the temperature, humidity, and quality of the fish. Users have to look directly into the fish storage area to find out the stock of Ice stored. The checks carried out are less effective because they are time-consuming and coupled with limited human memory, which often forgets, causing the quality of the fish to be poor
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