I too was facing voltage drop issue with DFrobot PSU module. The trick to have better control over variable output is to replace onboard resistor with a smaller one which gives higher resolution.
Thanks! I explained PWM in this video th-cam.com/video/-PCuDnpgiew/w-d-xo.html which includes the code, but it is wrapped up in more complex motor control code. I may in the future do a video that focuses on the fundamentals, but it's not on my current to-do list :)
Yes, truly grateful, let me ask you: why is it that when I run the command "ros2 run serial_motor_demo gui," my robot runs for about 1-2 seconds and then stops? Please help me, I sincerely appreciate your assistance.
Did you 3D print the covers for the chassis from the Blender file you did, or was that made in CAD - It would be great to see your workflow for this (I use Blender for designs, but don't yet have a 3D printer so not sure if I need to export to CAD or not)
Hey Duncan, sorry I never saw your comment here before. I know I replied on the forum but I thought I'd put it here too for good measure. The Blender model was just a quick mock-up for me to get a feel for it and try out different colours. I did the CAD design for the plates in Fusion 360 and they were very easy to make even with my limited CAD skills. You absolutely can export from Blender to STL to be sliced for printing, but you are much more likely to run into problems if you are not careful about it so I would strongly recommend using CAD software. (The occasional use of Fusion 360 is about the only reason I ever reboot my computer into Windows anymore!)
I'm planning to make my robot look like a vehicle but that unfortunately means i have to use 4 wheels instead of 2. Any recommendations in that aspect especially when it comes to the differential drive system?
I haven't spent much time playing with four-wheeled robots but a few options are: - Ackermann steering (like a car) and there are control schemes out there for this - Skid steering where you just do diff drive but with 4 wheels and have them skid - Omnidirectional (or mechanum) wheels which can allow you to do more complex manoeuvres with 4 wheels, including pretending to be diff drive Hope that helps
Heya I really got inspired to make a lidar robot so I picked up and old broken roomba to robotify. But I need a hand and some advice on parts and a way to get the lidar to communicate with everything else.
Hey there! I was installing gazebo using sudo apt install ros-foxy-gazebo........ But installation gets stuck on Waiting for headers after sometime, always. Can you suggest a way out?
Can't wait for ROS2 Control Video. Your Videos are very good explained from the start. It's hard to find videos like yours. Keep on, Thank you.
Thank you!
finally i found a nice ROS2 robo-building tutorial!
THANKS ALOT!!! Hyped for your upcoming vids!
Thanks!
I too was facing voltage drop issue with DFrobot PSU module. The trick to have better control over variable output is to replace onboard resistor with a smaller one which gives higher resolution.
Very interesting, thanks!
excellent! Can't wait for ROS2 Control Video.
Thanks! It's currently in the works but will probably still be a couple of weeks off.
Great job! Keep on please. Also, maybe a video of PWM control with code please? 😁
Thanks! I explained PWM in this video th-cam.com/video/-PCuDnpgiew/w-d-xo.html which includes the code, but it is wrapped up in more complex motor control code.
I may in the future do a video that focuses on the fundamentals, but it's not on my current to-do list :)
@@ArticulatedRobotics Thanks!
@ArticulatedRobotics Can you add the screen/display with this robot and make a tutorial for it?
Yep, I definitely will be but it will probable come at the end of the project as most people are more interested in SLAM, object tracking, etc. :)
awesome :)
Thanks for video , is there a schimatic for the circuit ?
Yes, truly grateful, let me ask you: why is it that when I run the command "ros2 run serial_motor_demo gui," my robot runs for about 1-2 seconds and then stops? Please help me, I sincerely appreciate your assistance.
Did you 3D print the covers for the chassis from the Blender file you did, or was that made in CAD - It would be great to see your workflow for this (I use Blender for designs, but don't yet have a 3D printer so not sure if I need to export to CAD or not)
Hey Duncan, sorry I never saw your comment here before. I know I replied on the forum but I thought I'd put it here too for good measure.
The Blender model was just a quick mock-up for me to get a feel for it and try out different colours. I did the CAD design for the plates in Fusion 360 and they were very easy to make even with my limited CAD skills.
You absolutely can export from Blender to STL to be sliced for printing, but you are much more likely to run into problems if you are not careful about it so I would strongly recommend using CAD software. (The occasional use of Fusion 360 is about the only reason I ever reboot my computer into Windows anymore!)
I'm planning to make my robot look like a vehicle but that unfortunately means i have to use 4 wheels instead of 2. Any recommendations in that aspect especially when it comes to the differential drive system?
I haven't spent much time playing with four-wheeled robots but a few options are:
- Ackermann steering (like a car) and there are control schemes out there for this
- Skid steering where you just do diff drive but with 4 wheels and have them skid
- Omnidirectional (or mechanum) wheels which can allow you to do more complex manoeuvres with 4 wheels, including pretending to be diff drive
Hope that helps
Heya I really got inspired to make a lidar robot so I picked up and old broken roomba to robotify. But I need a hand and some advice on parts and a way to get the lidar to communicate with everything else.
Hey there! I was installing gazebo using sudo apt install ros-foxy-gazebo........ But installation gets stuck on Waiting for headers after sometime, always. Can you suggest a way out?
Hmm my only suggestion would be to try running sudo apt clean then sudo apt update, then try the install again. Hope that helps!
Please can you share your cad chassis design