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Solar irradiance is one of significant parameter to describe to available potential of solar energy in a particular location. Measuring solar irradiance can be implemented by using different types of sensors, namely: pyranometer, pyrheliometer, light dependent resistor, photodioda and phototransistor. However, when implementing these sensors for solar energy potential measurement, a number of factors must be considered such as: sensor’s price and measurement capability. Therefore, the aim of this article is to analyze the used of low price solar irradiance sensor as part of automatic solar station for measuring solar energy potential in a particular site. BH1750 was used in this article where it has been found that it has limitations such as maximum capability is up to 55.000 lux. A method was introduced to increase measurement capability by putting a cover on the sensor. With this additional cover, specific calibrations need to be carried out to overcome sensor’s accuracy.

Adaptability in precordial lead placement is one of the sources of electrocardiography inaccuracy. The present experimental study aimed to investigate the modified precordial lead ECG SafOne on electrocardiography recordings. Fourteen subjects were selected using purposive sampling. All the artefacts that emerged in the ECG recording results from the subjects using both the modified precordial lead ECG SafOne and precordial lead standard ECG were measured and identified. Data were analysed using a t test to examine the difference in the artefacts from all ECG recordings. The electrocardiography recordings of males aged 21–25 years using modified precordial lead ECG SafOne showed that out of 168 precordial leads from 14 subjects, two indicated artefact images in lead II (1.19%) and three in lead III (1.79%). The statistical test showed no significant difference in terms of artefacts that emerged in the electrocardiography recording results from both standard ECG and modified precordial lead ECG SafOne (p = 0.096). The modified precordial lead ECG SafOne showed no significant effect on ECG recordings related to artefacts. Additionally, the precordial lead ECG SafOne had no substantial difference in the presence of artefacts compared to the standard ECG. Therefore, ECG SafOne was usable as an ECG precordial lead for electrocardiography recording.

Budidaya ikan lele merupakan salah satu usaha di Pondok Pesantren Markiz Daarul Qur’an Kecamatan Lipat Kain, Kabupaten Kampar Kiri dengan tujuan untuk memenuhi kebutuhan sehari-hari bagi santri yang ada di pondok. Kegiatan utama pengabdian masyarakat ini adalah memanfaatkan teknologi tepat guna untuk pemberian pakan ikan lele di ponpes Markiz Daarul Qur’an sehingga kegiatan pemberian pakan ikan dapat diberikan secara teratur dan otomatis. Selain mempermudah dalam pemberian pakan juga mengurangi tingkat kanibalisme ikan lele, sehingga ikan lele dapat diproduksi dalam jumlah yang sama dengan padat tebarnya. Kegiatan ini dimulai dengan melakukan survei oleh tim pengabdian dan mahasiswa Kukerta. Kedatangan tim pengabdian disambut oleh pihak pesantren dan mengantar tim untuk melakukan pengecekan ke tempat kolam budidaya ikan lele yang menjadi tempat pemasangan alat teknologi tepat guna (TTG) pemberi pakan ikan otomatis. Kondisi kolam dalam keadaan baik. Padat tebar benih ikan lele yang dibudidayakan yaitu 750 ekor, dengan jadwal pemberian pakan pada tiga waktu yaitu, jam 07.00 WIB untuk pagi hari, jam 15.00 WIB untuk sore hari dan jam 21.00 WIB untuk malam hari. Penerapan TTG pemberian pakan ikan lele di ponpes ini secara tidak langsung telah membantu  biaya operasional dan penyelenggaraan pendidikan santrinya, karena kebanyakan berasal dari golongan masyarakat kurang mampu dan anak yatim dari berbagai usia.

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