ABSTRAKSI: Dewasa ini hobby memelihara ikan semakin meluas dikalangan masyarakat. Memelihara ikan kelihatannya merupakan hal yang mudah tetapi tentu saja pelaksanaannya tidak semudah yang dibayangkan. Tentunya proses perawatan ikan ini mulai dari member imakan, mengganti air aquarium, menjaga suhu air, menjaga agar air tetap jernih cukup memakan waktu khususnya bagi orang – orang yang bekerja dan hobby memelihara ikan. Oleh karena itu, dikembangkan metode pemeliharaan ikan di aquarium dari jarak jauh yang dapat dikontrol melalui SMS darihandphone.Sistem ini memberikan keuntungan bagi mereka yang sibuk bekerja namun tetap senang memelihara ikan.
Peralatan–peralatan yang berada di aquarium yang dapat dikontrol yaitu heater, pompa penguras air, pompa pengisi air, lampu, serta ada suatu device yang dapat digunakan untuk memberi makan ikan. Alat–alat tersebut dihubungkan dengan mikrokontroler AT89S52 sebagai pengolah data yang juga terhubung dengan handphone penerima SMS. Di sini handphone yang digunakan untuk menerima SMS adalah handphone yang harus men-support AT Commands yang digunakan untuk pengambilan SMS.
Keberhasilan dalam penerimaan sms dan eksekusi oleh mikrokontroler terhadap device yang dikontrol (menyalakan dan mematikan lampu, menyalakan dan mematikan heater, mengambil data suhu, menguras dan mengisi air, dan memberi pakan ikan) menghasilkan presentasi sebesar 90%. Adapun kendala yang tercipta adalah delay yang terjadi akibat tidak stabilnya trafik komunikasi pada jam – jam tertentu, sehingga perintah harus dikirim ulang. Selain itu, keluaran catu daya sebesar 5 volt yang digunakan untuk meng-cover daya pada handphone dan mikrokontroler agar bisa menerima serta mengeksekusi perintah.Kata Kunci : SMS, Handphone, Sensor Suhu, AT CommandsABSTRACT: Today the fish keeping hobby more widespread among the public. Fish keeping seems to be easy but of course is not as easy as imagined in the implementation. Obviously this treatment process starts from fish feeding, replace the aquarium water, keeping the temperature of the water, keeping the water remains clear. These process spend much time, especially for people who work and hobbies to keep the fish. Therefore, the method of fish keeping in the aquarium that can be controlled via SMS from mobile phone is developed. This system provides benefits for those who are busy at work but still happy in keeping fish.
The equipment the placed in the tank which can be controlled is the heater, the water drain pump, water pump charger, lights, and there is a device that can be used in fish feeding. The tools are connected with microcontroller AT89S52 as a data processor which is also connected with mobile phone SMS recipients. Here the mobile phone that used to receive SMS is a phone that support AT Commands used to capture SMS.
Successfully indicator based on SMS and execute by microcontroller concerning to device which is controlled such as turn on and off the lamp, switch on and off heater, take the data of water temperature, drain the water, and giving food. The result of that is 90% in whole system that work together based on SMS. See the constraint on this equipment is the delay that happened because on communication traffic. It can affect the fluency of command data transmission that must be executed by microcontroller disturbed. So, the command must be sending again by user. Besides that, power output from power supply series is 5 volt which is handled activity of mobile-phone and also microcontroller in order to accept the command and execute it.Keyword: SMS, Mobile phone, Temperature Sensor, AT Commands