Oct 23, 2017
The course is very good.\n\nThe classes are well taught and show general concepts. It is necessary to do research on the internet, to solve the assignments. This is not a bad thing in my point of view
Jun 09, 2018
I think this is very good course of aerial robotics research. Being a student of robotics, I feel that some of stuffs in this course needs a good background in control and mechanical engineering.
por Antón R V•
Mar 15, 2016
This course successfully covers the mechanics and control topics of quadrotors. The course also points to some resources in order to extend your study on UAVs. However, there are some issues concerning the assignments which I didn't like at all:
1. Big gap in difficulty between assignments of first three weeks compared with the assignment of the fourth week.
2. The difficulty of the assignments of the first three weeks just relied on sweeping (somewhat 'smartly') a 1,2,3, or 6 dimensional parametric space. I guess that real UAVs engineers are not paid for this. In some assignment, I had to edited a file which I was not supposed to edit in order to pass it.
3. The last assignment was quite frustrating for the following reasons
3a. Really long running times to test if the parameters work fine. I would sacrifice the fancy real-time visualization to save some time. Apart from long running times, I guess that UAVs are not solving ODEs in real time on board, so I think is more interesting a more practical/real-time approach.
3b. Search in a 12-dimensional parametric space (some parameters are equal, but still you end up tunning 5,6 independent parameters, which influence each other). Come on, is this useful? I am sure that UAVs engineers don't spend their hours in this kind of crappy search. You could explain at least some existing heuristics when having so many control parameters to tune.
3c. Even though the drone trajectory seems to fit perfectly the planned trajectory, you might not pass the exercise, and you would get some clueless messages telling you the final position/velocity is not correct.
3d. The assignment guide is very unclear in some parts.
3e. A lot of typos in the formulas of the last part of the guide. I decided to completely ignore it and develop my own strategy, which turned out to be far simpler and easier to implement.
3f. The submission program tests the whole exercise regardless you passed some sections or not, which make the waiting times even longer.
por Glenn B•
Feb 29, 2016
My feeling is that the course creator(s) did not fully prepare and scope of the course materials (i.e., lectures, supporting artifacts, assignments) required for the available time alloted to each week's topic. No syllubus or suggested reading material was available until the course started, which leaves little time to decide on the value of the course or to acquire the reading materials. The lectures glossed over topics that where only minimally supported by brief supplementary lectures provided by the teaching assistants. At the start of the course the lectures and sparse supporting material were only available in video format; not very conducive for detailed review. The student population had to beg for electronic copies of the materials, which became available around the end of the second week of the four week session. The assignments say they require 3 hours, but I would venture to say that most students have spent way more than 3 hours on the assignments just in researching solutions let alone debugging supplied software along with their portion of the assignment. In summary, the topics were interesting however the organization and supporting materials were lacking making for an unsatisfying learning experience.
por Thadeus R•
Mar 14, 2016
This course definitely requires prerequisite knowledge of calculus and matrix math. There is also very little in the way of practical application. The MatLab work is interesting but barely explained. The assignments were nearly impossible without help from other students. Understanding which equations that were shown in the lecture (not necessarily explained) were useful in completing the assignments was not apparent and there was no help from the TAs.
I don't think the assignments were irrelevant but without having a background in academic engineering the course needs to walk through similar exercises with explanations to increase understanding and ability to complete the course.
While I don't think this course was well presented and I can't say I truly learned anything I am glad I was exposed to the material and I will continue with the Specialization.
por Antoine L•
Feb 12, 2016
This course feels like a bad news anchorman reading the teleprompter. It gives a lot of formulae without proper explanations. A lot of quiz answers do not come from the video lectures. The course is really just spitting formulae from the dissertation "Trajectory Generation and Control for Quadrotors" by Daniel Warren Mellinger (easily found using search engines). Reading the dissertation before doing the course would probably help understand the formulae they say out of context without the proper explanations. Sorry for the bad review, it's the first time I leave one like that, although I've completed many MOOCs. I hope it will help to improve the course.
por Ataliba M•
Jan 02, 2017
Very poor and a complete lack of interaction from Mentors/Tutors. Learners are left behind shooting bullets at the sky hoping to hit a star that might fall over with some hints. The course materials is consistent and very well informed but, as mentioned mentors/tutors since course began never showed up to clarify some frequent issues with Matlab codes and input data.
por Jiaming S•
Feb 09, 2016
The material this course provided is sufficient for a beginner in robotics. But I have to say that the material the coursed presented is not well prepared. The lectures are not well organized. Some necessary prerequisite should be at least provided as reading materials. Quizs ask some questions that is not clearly mentioned in the lecture and some are with a little ambiguity.
por Georg W•
Mar 09, 2016
I think this course does not a good job of explaining the mathematics very well. The supplementary material is very good in that regard, compared to the lectures. However, there are too few to make up for it. I would need a few example calculations of similar problems to what we are expected to solve in the exercises.
As a result, my learning success is not very satisfactory.
por thiago c•
Mar 16, 2018
Quizzes and assignments are not tied well to the lectures. The flow and sequence is not good. The subject is very interesting, but needs to be better organized. the last assignment requires an unreasonable amount of knowledge of Matlab. I code in other languages and I am not a big fan of Matlab which make it even harder.
por Hugo d l C•
Mar 03, 2016
Not well prepared and not well explained. They throw formulas at you and read it aloud instead of explaining the nature behind those.
They change notations every lecture, sometimes in the same lecture. It's easy but these things made it artificially dificult.
At least it's better than the next one in the specialization
por Bishwajit P•
Sep 14, 2016
Much better Courses are available for free on udacity and edx. this is only a money making course. concepts used are very old. nothing new in this course. One can dwell in PID controllers for life, its a huge are and the way its used here is totally ancient. its just some ancient methods in new quadcopters.
por Rochelle N A•
Nov 09, 2019
The program doesn't provide enough information for the quizzes or exercises; it is incomplete, in my opinion.
It could be better if there was more information provided (context). If you are not already an engineer, this program is going to be very difficult.
por Charan T•
Feb 01, 2020
not too bad but also not an impressive course. things was given as a fact while not answering the more important questions why ? and how ? . supplementary material for basic stuff were given but for the higher level ones , there is no clear intuition.
por Masahiro S•
Nov 08, 2016
I'm sorry, but I felt the week 4 assignment materials is not consistent to lesson videos or the lesson video does not explained enough.
I think that making students think does not mean making explanation indistinct.
por Sibtain M H•
Feb 13, 2016
This course is not a beginner level course rather it is an intermediate one. I had to put in more than 10 hours a week to complete this course. A basic knowledge of control theory is a must.
por yukti s•
Apr 21, 2016
Assignments for week 3 and 4 were very tough and a little guidance was provided on how to do the coding part. But since I'm interested in the course i'm re-enrolling to complete it this time.
por Ziming W•
Aug 08, 2016
Interesting course. But definitely not for beginners. With a designer background, I could never accomplish this course. I really hope Penn could offer course in such topic for beginners!
por J. D•
Feb 16, 2016
Quizzes and Assignments are poorly designed. You will spend most of your time tuning parameters
and deriving matrices that were never discussed in the course. Unfortunate.
por Anand R•
Jan 18, 2017
Assignments should be much more clear in terms of what is expected from the students and how to approach the problem.
por Jaroslava S•
May 20, 2017
It's an interesting topic. However, the course materials are not very helpful for the quizzes, unfortunately :(
por Juan A G•
Mar 01, 2016
iba bien hasta que empezó a pedir videos y grabaciones....
por José J H R•
May 16, 2016
Just PID in MATLAB and not very well explained.
por Pranjul c•
Nov 30, 2019
The course is awesome, but not for beginners
Jul 04, 2017
Les thèmes abordés par le cours sot très intéressants, malheureusement le cours manque de structure. La difficulté n'est pas progressive et les exercices en ligne demandent une patience infini (solutions totalement empiriques, essai-erreur jusqu'à obtenir une valeur satisfaisante pour résoudre la solution). Il n'y a peu ou pas de soutien en ligne de la part de l'équipe ce qui fait que beaucoup d'élèves se retrouvent bloqués au dernier devoir. Une sensation de ne pas avoir appris grand chose à la fin de ce premier cours de robotique.
The topics of this course are really interesting but it has no internal consistency. The difficulty is not progressive and the online assignements require an infinite patience (the solutions are totally empirical and require multiple try & retry with the very slow simulation). There is more or less no online support from the team (thanks to the community) what leads to a big impediment for lots of students at the last assignment (cf. the discussion). Still have the feeling I did not learn much at the end of this first course on robotics.
por James L•
Feb 21, 2016
This course was not a beginning level course as advertised.
Test cases for assignments were neither document nor otherwise explained within the course materials. Quizzes during the lecture were often unrelated to the material just presented or were given before the relevant material was taught.
The course creators obviously put a lot of time and effort into this course. So it is difficult for me to write such a critical review. However, they missed the mark with this one enough that I can't recommend the course.
Unfortunately I will not be completing this course only due to the fact that I have run out of time and patience to complete the last assignment.
por Osama G M K•
Aug 09, 2016
This course is not even considered as an introduction it's a complementary for those whose career is robotics , in other words the required prerequisites are more than matlab programming skills and some calculus and algebra, its assignments have many problems that cannot be solved using just the course studying.
the course doesn't give many information.