Currently, almost all activities carried out by all parties are inseparable from the sound system. With the sound system, it is not necessary to speak loudly. There are several types of sound systems or models, ranging from the cheapest to the most expensive, with the usual quality up to good. However, there is a problem that can be obtained by a sound system that is of good quality or the usual quality, namely feedback from the speaker to the mic. Feedback will be very annoying because of the entry of sound from the speaker to the mic, which should be avoided. By using the inverse phase method and narrow bandpass filter, the simulation results can eliminate the feedback signal that is 100%. However, there are side effects on the band that occurs feedback, which is the reduction in the sound signal by the feedback power level that occurs between 30% - 100% that are in the frequency band range.
Indonesia has a famous sweet potato called Ubi Cilembu that has a chewy and attractive meat structure. The advantages of this sweet potato, if baked in an oven, will produce a sweet honey flavor. Cilembu Sweet Potato that does not taste honey when eaten will reduce the delicacy because during the roasting process using an oven, there is no temperature control system that causes not toasted properly. Since reversing Cilembu yams is still done manually which can be endangering workers if exposed to a hot part of the oven. Because of this, the researcher will make it easier for users to work on the cilembu sweet potato roasting process more effectively than an oven control system is made. The implementation system is done by entering the temperature setpoint value and the timer via the remote displayed on the LCD, then the data is sent using a wireless module when the oven's half-timer time will rotate automatically by using the servo metal gear. The results are carried out by using a remote temperature control in the oven by entering the temperature setpoint value and the timer via the remote displayed on the LCD, then the data is sent using the wireless module when the furnace timer half time in the oven will rotate automatically using a metal servo gear. The system performance is designed to work within 2 hours with a weight of 1 kg of cilembu sweet potato using a temperature of 100.50 ° C.
Adanya teknologi Wireless Sensor Network (WSN) dimanfaatkan untuk membuat sistem sistem monitoring kadar gas pada tempat pembuangan akhir sampah, khususnya tiga gas yang akan dimonitoring yaitu gas metana (CH4), gas amonia (NH3) dan gas karbondioksida (CO2) yang dapat mengakibatkan penyakit infeksi saluran pernafasan. Sistem monitoring ini memanfaatkan teknologi Wireless Sensor Network supaya dapat memonitoring daerah yang lebih luas dengan menggunakan jumlah node yang banyak. Hasil komunikasi menggunakan modul nRF24L01 dari node sensor ke server dengan model komunikasi peer to peer dalam kondisi Line of Sight dapat berkomunikasi pada jarak maksimal 120meter dengan rata – rata delay yaitu 6.98s dan packet loss saat pengiriman data sebanyak 14% yang termasuk kategori buruk menurut ITU-T G.114. Kemudian untuk mengetahui kualitas jaringan saat melakukan pengiriman data dari server ke firebase dengan software wireshark didapatkan delay 261ms, kemudian untuk packet loss didapatkan nilai 8.3% masuk ke dalam kategori baik menurut ITU-T G.114.
Penggunaan energi saat ini sedang menjadi sorotan pemerintah Indonesia. Salah satu kendalanya adalah penggunaan Penerangan Jalan Umum (PJU). Dengan membuat setiap penerangan jalan umum dapat berkomunikasi, pemerintah dapat memantau setiap penggunaan daya pada penerangan dengan menggunakan algoritma Leach, yang berfokus pada efisiensi daya dalam jaringan untuk menghemat penggunaan daya. Dalam algoritma Leach yang diusulkan, node akan mengirim data ke server melalui kepala cluster yang dipilih. Kemudian kepala cluster akan meneruskan data tersebut ke node master yang secara otomatis terhubung ke server. Dengan mengambil pendekatan seperti itu, penggunaan daya di setiap node akan efisien. Performa yang diperoleh dapat mencapai efisiensi 42% pada proses pengujian dibandingkan tanpa menggunakan algoritma Leach.
Increasing demand for electricity also implies a rise in conventional energy use, and by using conventional energy, leading to disadvantages such as being environmentally unfriendly as a result of fossil fuel use. The system to be researched is a wireless intelligent power switch . The system will be created using 2 types of resources and each load will be linked to a switch to determine the power distribution. The power distribution decision making involves an artificial intelligence based on backpropagation neural network.The results of the comparison between the outcomes of Matlab simulation and the anticipated target showed excellent outcomes after testing the system, with accurate 94.3% and delay transmission 5 -10 second.
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