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Last update: September 2023

Building on the knowledge you gained in the Analog Electronics and Digital Electronics modules, you'll open even more doors to diverse careers and hobbies by learning how to physically move robots and mechatronics. Robotic drives and physics are intimately intertwined - almost the same topic in fact. And think about all the things around you that are moved or operated automatically: from the furnace and air handlers in your office building, to so many functions in your car, and then the booming robotics field in industry, mass production, even entertainment! People are needed who understand how those robots work in order to design, install, program and maintain those robots. Maybe you're interested in building a submarine robot to dive to shipwrecks or places normally unreachable by humans. We'll actually look at a real-world case study and use our new-found knowledge of physics to design a submarine robot to operate at depths of 600 meters or more. Or perhaps you are just interested in competition robotics like the gladiator-style battle robots which go head-to-head to destroy each other. 3D printers (of which we design and build one in course 4) are essentially robots! All of these topics involve a good understanding of robotic drive systems and physics which you will learn in this course.


With over 45,000 students enrolled in the first two courses in the "Robotics: Learn by building" series,  more than 3,200 five star ratings in the first course alone, students aged 8 to 60+ have enjoyed the course series and its projects.

No prior knowledge of mechanics, physics or robotics is needed. You will need a good understanding of electricity & electronics and digital control and some basic math. If you have completed course 1 "Electricity and Electronics" and course 2 "Digital Electronics" you have the background you need as we will be using those skills in this course to drive different kinds of electric motors. All courses have captions for the hearing impaired.

Course materials:

You will need the analog electronic parts and a breadboard, which you can purchase as an accompanying kit (i.e., the Analog Electronics Kit from module I) or provide your own, as well as the parts from the digital electronics kit (i.e., the Digital Electronics Kit from module II) or provide your own Arduino controller board and some logic-level, high power MOSFET's.

You will also need the Robotic Drives & Physics Experimenter's kit which again you can purchase as an accompanying kit or provide your own parts. The first lesson is a walk-through of what is in the kit and acts as a parts list for this module.


This series of "Robotics: Learn by building" modules has an end-goal focus on the diverse field of robotics. In module I we learned the basics of electricity and electronics. In this module II you further developed your knowledge and skills to include digital electronics and practice your skills on real-life digital components. In this third course you will learn physics principles (from simple to very complex) with a specific goal of understanding and even designing your own drive systems for robots. You will learn details about different robotic drive systems you will see in commercial, industrial robots like how timing belt drives work and why they are so important in robotics, as well as the more esoteric drives like the harmonic drive - what it is an how that amazing system works.

We will even look at a real-life case study as we design a submarine robot, remotely operated and able to withstand the bone-crushing operating depths of over 600 meters minimum. The unique challenges we will face will build up your knowledge so that you too can design sea-floor robots facing harsh environments to perform inspection, welding or maintenance on submarine pipes or cables.

This course is the prerequisite for the module IV course where you'll learn prototyping skills, and gain a wide variety of knowledge and skills so you can actually build your own robots and manufacture your own parts. In module IV, you'll culminate all you've learned so far as you build a 3D printer from scratch, hook it up to a desktop computer and make your own plastic parts. The 3D printer is, in effect, a robot which you can then use to make parts for your other robot designs. In module V you can take your robot design and construction skills to the next level with a hands-on approach to autonomous robotic systems: learning about various sensors to know where you are and what your robot is doing, GPS navigation, basic artificial intelligence, powerful microchips known as FPGA's where you literally design a custom circuit on the chip, vision systems and more.


Lesson overview:

  • In this course we'll be covering:

  • Simple machines (which all come into play in surprising ways you probably haven't seen before)

  • Designing an arm robot

  • The toggle mechanism (again, comes into play in a ridiculous number of surprising ways you probably haven't seen before)

  • harmonic drives, cycloidal drives, epicyclic drives, traction drives

  • strength of materials & construction challenge

  • case study: design challenges of a deep-submarine, remotely operated vehicle

  • hydraulics & pneumatics (including building your own)

  • air & hydraulic muscles, muscle wire

  • servos (speed, pressure, force, position, etc...)

  • DC motors, BLDC motors, BLDC servo motors, stepper motors, AC motors, AC servo motors, single and three phase power, electrical generation

  • frequency drives, PWM AC signal generation

  • regenerative / rheostatic / dynamic braking, looking at electric vehicle design and locomotive design

  • counter-force systems you will encounter in industrial robots

  • safety around robot systems, in industry and hobby

  • robot designs: articulated arm, gantry, spine, collaborative

  • case study: combat robots



and more!



Bạn sẽ học được gì

How do we make a robot move? What kind of ways are there to power our robots and how can we use even tiny motors to move a substantial load? How can we make things like robotic, bionic arms? These are the things we'll explore with first hand application and practical experiments that you can perform at home to get you one step closer to designing and building robots and robotic systems.

Yêu cầu

  • Fulfillment of courses 1 & 2 in the series, or a good knowledge of electricity, analog and digital electronics.

Nội dung khoá học

1 sections

Introduction

58 lectures
Whatcha gonna need: explanation of parts in the kit
19:27
Physics kit table assembly
17:16
Simple machines: Levers and why they are important
18:05
Gears, compound gears & mechanical advantage
18:22
Building our experimental gear drive
13:53
Mechanical Mayhem challenge #1
08:17
Strap Drives
13:01
Arm robot design challenge #1, part 1
10:39
Arm robot design challenge #1, part 2
12:00
Backlash: The nemesis of robotics
10:42
The Wedge / threads / ball screw drive
11:16
Anti-backlash gears
02:15
DC brushed motors
11:12
Exploring real world DC motors on a forklift
03:57
Back EMF
05:13
Toggle mechanism and building a robot gripper
05:35
Electrical generation & 3 Phase AC power
12:44
Regenerative braking
11:14
Regenerative braking II: A practical application
10:23
Servos and feedback, part 1
15:53
Servos and feedback, part 2
06:37
Stepper motors
14:25
Stepper Motors II: Driving them around
10:08
Updated Brushless DC motor wiring
06:21
Brushless DC (BLDC) motors
13:01
Building our 3 phase H-bridge to drive a BLDC
17:14
Driving BLDC in closed loop with hall effect sensors
10:25
PWMAC - simulating an AC wave using PWM
14:08
Hardware hacking a BLDC into an AC servo motor, part 1
09:28
Hardware hacking a BLDC into an AC servo motor, part 2
13:00
Submarine Robot Case Study, part 1
19:07
Submarine Robot Case Study, part 2: Buoyancy Control
11:34
Submarine Robot Case Study, part 3: Density and Buoyancy
08:07
Submarine Robot Case Study, part 4: Pressure Vessels
12:16
Strain Wave Drive, aka Harmonic Drive
12:42
The Cycloidal drive
07:22
Robot safety & interlockings
15:14
AC motors, part I
09:20
AC motors, part II: Synchronous & Asynchronous
12:20
DC dynamic brakes
18:49
AC dynamic brakes
12:56
Safety with air and fluid power
07:05
Physics kit backboard assembly, part 1
15:17
New Hydraulic pump in assembly
03:31
Physics kit backboard assembly, part 2
06:40
Air tank assembly
04:05
Assembling power cylinders
19:40
Extra parts with power cylinders
02:17
Homebuilt Power cylinder tear-down
17:19
Power cylinder physics
09:12
Solenoids
05:29
Using our pneumatic system
13:46
Measuring force from our power cylinders
08:25
Air muscles
14:23
Counterweights & Balances
03:18
Springs and animatronics
10:49
Resolvers: And introduction
11:04
Reading Resolvers using hysteresis
11:02

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