Kiai Hologram oleh Emha Ainun Nadjib

Kiai Hologram adalah buku Cak Nun kesekian yang saya baca. Saya membaca buku beliau karena tertarik dengan cara beliau memandang suatu peristiwa. Dari buku-bukunya, saya belajar mengambil hikmah.

Seperti buku-buku sebelumnya, beliau menghikmahi kejadian-kejadian di sekitarnya. Kali ini, selain tentang kemasyarakatan, beliau juga sedikit bercerita tentang keluarganya di bagian pertama buku ini. Selain itu, beliau membagikan pemikiran-pemikiran yang dibahas selama acara kenduri cinta, atau maiyah-an.

Ada beberapa kutipan menarik yang saya ambil dari buku ini, termasuk paragraf berikut.

Pribumi itu bukan siapa kita, apa warna kulit kita, apa agama kita. Pribumi itu bukan personalitas, bukan pula identitas. Pribumi itu komitmen kepada rakyat karena kita sendiri adalah rakyat, bukan yang berkuasa atas rakyat.

Hal. 219

Paragraf tersebut saya artikan sebagai sindiran bagi pemimpin yang datang dari kalangan “rakyat”, namun kemudian menjadi “elitis”. Kebijakan-kebijakan yang dibuat tidak lagi memihak kepada “rakyat”, sehingga boleh kita mengeluarkan personil tersebut dari himpunan “rakyat”.

Di halaman lain, saya menemukan satu hal berkaitan dengan ketuhanan-keagamaan yang menambah wawasan saya.

Kalau manusia mencari Tuhan, itu namanya rasa keagamaan atau religiositas (berkaitan dengan ibadah muamalah). Kalau Tuhan menginformasikan, menghidayahi, menyuruh, melarang, itu namanya agama atau religion (berkaitan dengan ibadah madhloh). Tanda agama adalah kalau ada ibadah madhloh. Karena kalau ibadah muamalah, meskipun juga baik, ia bukan agama melainkan rasa keagamaan.

Hal. 275

Buku-buku Cak Nun memang mengandung banyak hikmah yang bisa kita pelajari. Namun, sebagai pembaca non-jawa, saya merasa ada beberapa kata dalam bahasa Jawa yang seharusnya dibuatkan pengartiannya dalam bahasa Indonesia. Saya mahfum bahwa tidak semua kata dalam sebuah bahasa dapat dengan mudah diartikan ke bahasa lain, tapi membiarkan pembaca tersesat sedikit mengurangi kedekatan pembaca dengan buku.

Programming for Robotics ā€“ ROS: Exercise 2

This post is a continuation of previous project, on learning ROS. The lecture and exercise is given by Robotic Systems Lab. – ETH Zurich, can be accessed through this website.

This second lecture is focused on ROS package structure, ROS C++ client library, ROS subscribers and publishers, ROS parameter server, as well as RViz visualization. I haven’t included integration and programming with Eclipse in my work.

Exercise 2

The video above shows my result for the exercise. You can find the exercise paper sheet on this link.


Thanks to Robotic Systems Lab – ETH Zurich for sharing this helpful course!

Programming for Robotics – ROS: Exercise 1

Recently, I found an interesting website to learn about ROS and Gazebo. This website is provided by Robotic System Lab – ETH Zurich. Even though I’ve made several ROS project, including the one for my internship at ProtoSpace Toulouse – Airbus, the online course has a lot to offer about ROS.

The first lecture is an introduction to ROS, such as masters, nodes, topics, and launch files. The lecture file can be found in this link. At the end of the lecture, an exercise is given which require students to control a simulation in gazebo using keyboard input as well as to make a launch file.

Exercise 1

The video above is a simulation of the exercise, controlled by keyboard using teleop_twist_keyboard.

Continue reading Programming for Robotics – ROS: Exercise 1

Obstacle Avoidance for Quadcopter with Ultrasonic Sensor

In 2017, I made an obstacle avoidance for quadcopter using an ultrasonic sensor as my undergraduate thesis project. The goal is to do proof of concept of an ellipsoid based guidance proposed in the following paper. The paper take a fixed-wing aircraft as the model. However, since implementing it on a fixed-wing model is an extremely laborious work, the implementation is done on a quadcopter.

Quadcopter System

To mimic the radar sensing, in this project, I used an rotating ultrasonic. The ultrasonic is rotated by using a servo that is commanded through a microcontroller, Arduino. The sensing result is estimated as an ellipsoid geometry, considering the size and orientation of the obstacle as well as aircraft velocity vector. A contact point is set as a guidance.

Continue reading Obstacle Avoidance for Quadcopter with Ultrasonic Sensor

List of Prime Numbers

Recently I had an interview for an internship position with Volocopter. It is an Urban Air Mobility (UAM) company based in Germany. As far as I know, this company is one of the most advance in UAM competition.

One part of the interview was an online coding. The interviewer asked me to “provide a list of all prime number up to 1000”. I found this question interesting as a there’s only one characteristic of a prime number.

Continue reading List of Prime Numbers

About Me

Hi! My name is Fazlur. Iā€™m majoring Aircraft System and Control at ISAE Supaero, Toulouse, France. I studied Aerospace Engineering in Institut Teknologi Bandung (ITB), Bandung, Indonesia.

I’m interested in Unmanned Aerial Vehicle, Automatic Control, and Robotics. Still progressing to make a masterpiece on these topics!

I have no specific hobbies. I play futsal weekly. I love cooking, my friends told me I’m good at it. Sometimes I make a miscellaneous DIY project to spend time.

I speak Indonesian (my native language), English, and French. I’m learning German at this moment.