ABSTRACT− Thickness measurement tools of materials based on microcontroller has been done. This instrument consists of mechanical system, ultrasonic sensor HC-SR04, Arduino UNO microcontroller module, stepper motor, and MicroSD Card module. Ultrasonic sensor HC-SR04 is integrated with the Arduino UNO module and measurement data is displayed on LCD 20 X 4 characters, then the measurement result of date was stored automatically in MicroSD Card. The accuracy of the thickness meter is done by comparing between the measurement data from the thickness meter with the measurement manually. The measurement result of composite board thickness has 93,8% accuracy on flat composite and 50% on the uneven composite board test.
KEYWORD : Arduino UNO, composite board, thickness, ultrasonic sensor HC-SR04
I. PENDAHULUANPapan partikel merupakan salah satu jenis produk komposit yang terbuat dari partikel-partikel kayu atau bahan berlignoselulosa lainnya yang diikat dengan perekat sintesis kemudian dikempa panas (Maloney 1993). Papan partikel dapat ditinjau dari segi pengempaan, kerapatan, kekuatan (sifat mekanis), macam perekat, susunan partikel, arah partikel, pengolahan, dan bentuk. Papan partikel umumnya berbentuk datar dengan ukuran relatif panjang, lebar, tipis, dan mempunyai bentuk tertentu tergantung pada acuan (cetakan) yang digunakan (Sutigno 1994).Untuk mengukur ketebalan selama ini digunakan jangka sorong dan mikrometer sekrup. Jangka sorong adalah alat ukur dengan tingkat ketelitian 0.1 mm. Sedangkan mikrometer sekrup dapat digunakan untuk mengukur benda mencapai ketelitian 0,01 mm (Darmawan 1984 ABSTRACT− Thickness measurement tools of materials based on microcontroller has been done. This instrument consists of mechanical system, ultrasonic sensor HC-SR04, Arduino UNO microcontroller module, stepper motor, and MicroSD Card module. Ultrasonic sensor HC-SR04 is integrated with the Arduino UNO module and measurement data is displayed on LCD 20 X 4 characters, then the measurement result of date was stored automatically in MicroSD Card. The accuracy of the thickness meter is done by comparing between the measurement data from the thickness meter with the measurement manually. The measurement result of composite board thickness has 93,8% accuracy on flat composite and 50% on the uneven composite board test.
