Let's Make Robots!

Sci-Fi Robot Prop Project - Can someone point me in the right direction?


I have been running Fantasy and Sci-Fi Live Role Playing games on and off for over 30 years and most of my props have been pretty much black polythene and gaffa tape with a good dose of carrimat and latex to boot. Now I am looking to embark on something that I have never tried before. A droid. This will be used on a science fiction adventure game so nees to be a robust working prop at least for a day.

The Scope:

Rotating track flipper design

I see a few of these tracked robots that have a set of tracks that pivot 360 degrees around. I'm kinda stumped on how to build the flipping thing while still using COTS motors and tracks. Are all of these completely one offs, using some kind of custom-built sleeve that controls the pivot of the track, while the drive of the tracks is connected in the middle of the sleeve? How does this work? I've hopefully embedded a video that has an example of what I'm talking about. If you search youtube for "stair climbing robot" you'll run across a dozen or so different robots that use this design.

Manufacturer - programming language list

I want to get into robotics, but can't even decide which controller I need. The guide I found says that controllers can be programmed even with high-level languages like c++, javascript and python, so I'm looking for a controller that can be programmed using c/c++ language. But I can not find a list with manufacturers and programming languages matching their controllers. Second thing - where do I get an IDE for controller programming? Guess I won't be able to use MVS for that purpose, and using a text editor and compiling using console does not look like a good idea for me.

3D printer for hobby robotics

I am getting into hobby robotics, and I am finding that I more and more am in need of the ability to create custom parts.

What would be a good 3D printer to buy (couple grand max cost), for creating parts such as: chassis, wheels, servo armatures and holders, gears, etc.

For me one of the most important things to be able to make would be my own custom gear trains.

What would be a good 3D printer, precise enough and using tough enough materials to great gears for robots on the size scale of a cat. Such as differential wheeled, hexapod, and quadrapod platforms?

something that push or push out and back a stick horizontally to 50cm

Hi, i'm searching for idea how to build something that will push or push out and back a stick horizontally to 50cm.Sorry i don't know how to explain better,ask me if you don't understand.thanks

First time - hardware/electrical parts


this is my first post so please don't be too hard on me.

I want to build & program a hexapod robot which should be able to walk (later autonomously, too).

My biggest problem is not the programming part, as I have already programmed robot controls (/w ROS), computing of IK etc. but rather the hardware part (electrical engineering and such).

Before buying stuff blindly and spending a lot of money, I would like to know if those parts below fit together (regarding voltage and such):

Is there a guide on when and how to use an oscilloscope for robot building?

I see some discussions about it being used to check servos but nothing really basic that tells you if you need one, when you need one, how it helps you, etc.






Tips for having custom parts waterjet cut ⚙

If you have a sophisticated mechanical design for your robot, you may have considered having the parts made by CNC waterjet. But, as with any tool, there are some limitations to this approach. I created thse articles to explain the limitations of this technology and hopefully make it easier to get the custom parts you need from waterjet cutting

OpenNI & Kinect error "no devices connected.... waiting for devices to be connected"

Dear: LMR

Just to let you know I am trying to use a kinect sensor with openni and slam but am running into a few problems. I keep running into this error "No devices connected.... waiting for devices to be connected" inside my terminal. I've tried using freenect_launch, I've tried installing KinectSensor-unstable repair files, and I've tried different methods like using openni2 and nothing is different. Here's what my terminal shows when I put in "roslaunch openni_launch openni.launch" into the terminal after pressing enter.

Noon needs help - TV cabinet opening

Hi guys, totally new to electronics and have been reading up on arduinos and I'm currently doing a renovation at home which I think could integrate some robotics using a servo and two actuators. Rather than me explaining take a look at the video below: