Lampu Sein Helm Sepeda Berbasis Voice Recognition

Bicycles are not equipped with the turn signal. For driving safety, a bicycle helmet with a turn signal is designed with voice rrecognition. It is using the Arduino Nano as a controller to control the ON and OFF of turn signal lights with voice commands. This device uses a Voice Recognition sensor and microphone that placed on a bicycle helmet. When the voice command is mentioned in the microphone, the Voice Recognition sensor will detect the command specified, the sensor will automatically read and send a signal to Arduino, then the turn signal will light up as instructed, the Arduino on the helmet will send an indicator signal via the Bluetooth Module. The device is able to detect sound with a percentage of 80%. The tool can work with a distance of <2 meters with noise <71 db.

Pengaruh Kecepatan Putar Terhadap Hasil Coran pada Metode Pengecoran Sentrifugal dalam Pembuatan Produk Pisau Pakan Ternak dengan Material Ni-Hard1

Animal feed knife is a tool that serves to cut and chop animal feed consisting of grass as the main ingredient with additives such as bran, herbs, centrate, cassava, tofu pulp and others. Therefore, as a cutting tool must have the properties of friction resistance, impact resistance, and have good sharpness, so that the material chosen is Ni-Hard 1. The use of centrifugal casting method was chosen because it has the advantage of being able to make castings with relatively thin thickness this is due to the influence of the centrifugal force on the distribution of metal liquids throughout the cavity in the mold. Case study in this study is the use of centrifugal casting methods as an alternative to gravity casting methods to overcome defects of misruns. This research was conducted to investigate the effect of speed on the formation of castings products. The method that was carried out began with a literature study on centrifugal casting, and continued by determining the material, the temperature of the cast is in the range 1250ºC - 1300ºC, and the type of mold. The next step is to do work drawings, pattern making, mold making, casting processes, fettling processes, and analysis. With variations in speed of 200 rpm, 300 rpm and 400 rpm, it can be seen the optimal speed for making this product. The results of this study obtained optimal speed at a speed of 300 rpm to make good quality of animal feed knife products.

Optimasi Parameter Proses 3D Printing FDM Terhadap Akurasi Dimensi Menggunakan Filament Eflex

Fused Deposition Modeling (FDM) is a 3D Printing technique used to print products using filaments as material. The printed product has ideal geometric characteristics if it has meticulous size and perfect shape. One type of material that can be processed using 3D Printing FDM is flexible material. Research in terms of dimensional accuracy has been carried out on PLA and ABS materials. While research using flexible materials is still rarely done. From these problems, we need a study to get the process parameter settings on a 3D Printer machine that is optimal in obtaining dimensional accuracy using flexible materials. The research was carried out using the Prusa model DIY (Do It Yourself) 3D machine with FDM technology. The material used is Eflex type flexible filament with a diameter of 1.75 mm. The process parameters used in this study are flowrate, layer thickness, temperature nozzle, speed printing, overlap, and fan speed. Cuboid test specimens measuring 20 mm × 20 mm × 20 mm. Process parameter optimization using the Taguchi L27 Orthogonal Array method for dimensional accuracy testing. Optimal process parameter values for obtaining X dimension accuracy are 110% flowrate, 0.10 mm layer thickness, 210 °C nozzle temperature, 40 mm/s print speed, 75% overlap, and 50% fan speed. Y dimension is 120% flowrate, layer thickness 0.20 mm, nozzle temperature 230 °C, print speed 30 mm/s, overlap 75%, and fan speed 100%. As well as the Z dimension is 120% flowrate, layer thickness 0.30 mm, nozzle temperature 210 °C, print speed 30 mm/s, overlap 50%, and fan speed 100%.

Uji Mesin Crusher Brondolan Sawit dengan Mata Potong Circular Saw Standar

Palm brondolan are the outer fruit of the loose bunches and fall to the ground. Palm brondolan is used as a feed ingredient. Processing of palm brondolan for feed ingredients needs to be done by the process of damaging the material structure. This study aims to determine the quality of palm brondolan crusher using standard cutting eyes and determine the right shaft. In this study the crusher machine was designed using 13 circular cutting eyes to see the standard  4 x 1.75 mm, the number of teeth 40 pieces and the distance between cutting eyes 5 mm. This machine uses a source of driving power in the form of a 3 phase electric motor with 3 HP power and has a rotating speed of 1420 rpm and a rotation ratio of 1: 1 shaft. This study uses the experimental method, by comparing the shaft test with the quality of the palm blended crusher. The quality characteristics that are addressed are the smaller the better. The results of the study, obtained an effective engine capacity of 30 kg/hour. The quality of the crusher at 700 rpm shaft speed accelerated the size of coir length from 1 to 30 mm and the volume of shell and seed granules 8-27 mm3 while in shaft rotation 1420 rpm the size of 1-20 mm coir and the volume of grain and seeds 4-12 mm3 were obtained. From the results of the experiment proving that circular cutting eyes see the standard capable of destroying palm leaflets and shaft rotation affect the quality of the crusher. The 1420 rpm shaft rotation has a better crusher quality compared to 700 rpm shaft rotation.

Rancang Bangun Mesin Pengayak Pasir Untuk Meningkatkan Produktivitas Pengayakan Pasir Pada Pekerja Bangunan

One of the materials used in the building process is sand particle. Sand with uniform size is generally obtained from manual sifting processes that require a lot of human power and long sieving time, so a sand sieving machine is needed to minimize the use of human power and sieving time. The design is focused on sifting sand manually into sieving using a machine. The design of the machine uses design software to create a picture of the arrangement and working drawings of the components of the sand sieving machine. Based on the results of the trials that have been carried out, the machine can sift 5 kg of sand for 1.02 minutes and for 10 kg of sand can be sifted for 1.30 minutes.

Optimasi Multirespon Purwarupa Electrical Discharge Machine (EDM) Menggunakan Metode Taguchi-Grey Relational Analysis

EDM is one of the nonconventional machining processes when making workpieces with conventional machining processes is difficult. This process has been used effectively in machining hard, high-strength and high temperature materials such as high speed steel (HSS) materials. In this study, prototype of EDM machines was carried out with engine variables such as current (A), pulse on time (µs) and pulse off time (µs). The material used is high speed steel (HSS) material used in cutting tools such as turning tools and milling tools. Surface roughness and material removal rate are responses observed to determine the quality of material remaval. The quality characteristic of the surface roughness response is "smaller is better" and the quality characteristics of the material removal rate response is "larger is better. The purpose of this study is to determine the best process parameter level to achieve the required performance characteristics in the material removal process using prototype EDM machines using the gray relational analysis (GRA) method, three process parameters are selected such as current, pulse on time, and pulse off time. The taguchi 3 x 3 x 3 design is used as an experimental design.The best parameter level obtained is current 40 ampere, pulse on time 200 µs, pulse off time 20 µs.

IPTEK UNTUK KELOMPOK USAHA ANEKA ROTI DAN KUE DI BANGKA BELITUNG

In recent days, the bread and cake for most Indonesian people have been used as a meal replacement or substitute for the staple food. Required good planning and management in order to meet the customer demand, the customer fulfillment both in quantity and in quality, especially in the operational management of production processes. These activities aimed to assist the partners in developing their business. The methods and procedures applied in the first stage is to survey the problems of the partners, the second stage of the design and analysis of alternative dispute resolution solutions partners. Furthermore, the third phase-grant program implemented as a solution to the problems faced by each partner. Service activities has been giving grants to the first partner in the form of mixer machine, oven, counter display case and the second partner giving grant heating chocolate machine and repair mixer machine with a capacity of 9 Kg. Besides the two partners are also given training related to maintenance machinery and entrepreneurship. This service activities have an impact on first partner is number of asset’s increased up to 2.7-fold, speeds production increased by two times and followed by an increasing number of customers, and product sale also increased by two times compared to the previous. While in both partners, this event has helped to produce the information concerning the identification of base problems so that it can be used as a reference for improved planning and management development efforts.

ALAT DETEKSI KANDUNGAN GAS CO DAN NO2 VIA SMS

Increasing the amount of air pollution that causes global warming and the lack of attention to harmful gases such as CO and NO2 can have negative effects on health can even cause death if it is ignored by those who breathe it. And one of the most popular communications media today is mobile. Therefore, it is necessary to create a tool that can monitor air quality levels and by utilizing advances in technology monitoring system can be seen from a far via SMS. In this paper, we use the type ATmega AVR microcontroller unit 16 as a control center and a GSM modem as a network system that handles communication between the microcontroller to the network using the SMS application. In addition, the system uses the C language as the configuration between the microcontroller and mobile network systems. Air pollution levels were measured with gas sensor MQ-7 that serves to measure levels of CO and MQ-5 to measure NO2 levels. The test results of sensor calibration and sensor MQ-5 MQ-7 which issued the ADC output is changed by using the formula provisions ppm ADC becomes a value in accordance with the standards set by ISPU (Air Pollution Standards Index).

MESIN ROLL PELAT BAHAN PEWTER

The design of the machine roll plate made from pewter to be developed is a machine that is simple, easy to be usde and does not endanger the user and use 1 phase ac motors. The system uses two cylinder rolls at the top and bottom with a thickness regulator by using a screw system. The material used is steel st. 40 for the roll materials and to get the smooth rolling process, then roll grinding cylinder. For the power cylinder roll will be analyzed by the software that is to know the voltage that occurs in the cylinder roll when rolling the pewter plate by assumed load of 1000 kg. The result of this research is the engine may roll the plate pewter with a size of 260 mm x 70 mm x 3 mm to a size of 430 mm x 77 mm x 1 mm, which takes 6 minutes of 1 plate pewter, plate surface pewter solid and smooth, and the size of the plate length increases ± 98% and ± 7% width, thus saving time, effort and cost in the casting process.

MESIN PENCETAK STIK BENTUK AKAR KELAPA

Besides getas and kemplang, one snack which most people like in Bangka Island isa a snack with the form of a palm tree roots. The craftsmen who manufacture these sticks derived from Pangkalpinang. The results of the survey on the Small Industries (IKM) in the District Gerunggang show that theproduction process sticks using manual equipment/manpower. To overcome the problems of IKM, hence the researcher designed to facilitate the molding machine in the production process and speed up production so as to produce a better capacity of production by using the manual method. The methodused in this research is to design and calculation by using computing devices Solidwork. This stick molding machine uses a mechanism that rotates a threaded shaft, then an emphasis on the dough so that these products can be pushed toward the output. From the experimental results the output of this machine is the root of the stick-shaped palm with a size 100x5 mm, output 500 gram / 5 minutes by the number of ± 80-100 grains stick.