The development of an on-line process control system in the Industry is a major requirement in the context of the efficiency of machines and improving the quality of production during the Covid-19 period. As well as in the learning system and practicum students are required to be able to study independently, and lecturers must be able to develop themselves in on-line learning methods. The on-line learning process is not just to transfer learning modules to students, but must be able to guide students in an unlimited time, whenever students need an explanation of the material provided. TeamViewer is an application that provides a solution that is used to remotely control another PC or laptop. By knowing the ID and password are provided by TeamViewer on the PC that want to remote. Then, it just entered the TeamViewer application installed on the PC. The use of this team viewer was tested against the control of the beverage bottle filling process. The result is that by using Android the process of controlling beverage bottle filling. It turns out that, it can be operated to fill beverage bottles for different size, namely by setting the data delay on the program 3.2 seconds for the 120 ml bottle size, 4.0 seconds for the 200 ml bottle size, and 5.0 seconds for the bottle size of 300 ml.

Minolta photocopiers produce very good and reliable photocopier quality during their lifetime with the condition that the toner must be replaced with the original. If it is replaced by refilling, then refilling can only be done an average of three times. Meanwhile, replacement by refilling is needed by small and medium business units (SMEs) in an effort to save costs. Recharging that exceeds the average three times will cause the Minolta photocopier to have an error with code C032. Therefore, this paper was conducted to increase the frequency of the toner refill process as a solution for the Minolta Bizhub 421 machine to minimize losses due to interference with code C032. So, the machine can be refilled repeatedly without interruption, as well as adding error information via SMS using an Arduino microcontroller. Method was used experimental of placement sensor modification of photo interrupter and ATDC (After Top Dead Center) sensor. The results showed that after modifying the sensor placement, the number of refills could be increased to an average usage of toner exceeding 12 refills before the error code C032 occurred. This was because of the opto sensor was covered by toner powder and with an indicator that controlled the toner rotation it had reached set point. Then, with SIM 800L, which sends SMS and miss call notifications to users with a success rate of 98% and 2% error. Therefore, it helps users of the Minolta Bizhub 421 photocopier can more easily supervise the toner tube.