Hey guys. As I am closing in on the finishing line on my Gargantuan project, I’m lining up the remainder of the year with a few projects. I have a budget for a couple more projects. I’d like your input as to what you’d like to see me build the most.
I’m due to return for reshoots for Avengers 4 in September and then there is a question mark about Guardians of the Galaxy 3 as they fired my director?! That was to begin in January. So I may in fact have a lot more robot time on my hands than I originally thought.
But here are some things that I’ve been either working on designing, thinking about or just might be really cool to tackle.
A body for Alan. ( all the sourcing has been done for this)
New version of Alan’s Head. Like an advanced model , expressions, blink, new face design et.
A biped 24 inch walking robot
A tank tread robot
Back pack robot that unfurls
Robot Dog like Boston dynamics
---Please pick one or two at most---
@cem,
You can find new wheels on ebay for as little as $27 each! Here is a link and example:
Ebay hover wheel replacement
Here is a video converting it over to an hbridge control.
This interesting link will deconstruct the wheel so you can explore its inner workings. Also the thread this is connected to is a users group for this amazing controller this guy created called the ODrive controller. He continues to develop and will eventually have a PWM option. Serial i believe is already supported.
Deconstruction and ODRIVE
I am working with hover board motors now using this controller board qs-909. I ended up buying a completely different set of drive motors and controller because I couldn't get them to work. They have a ton of torque and can hold a lot of weight. I haven't given up on them, they are just a pain in the butt.
Update on the Odrive driver board. As of 15 days ago the creator has released firmware that now officially supports PWM and hoverboard wheels with hall sensors. These boards are pricey at $125 but thats for 2 channels up to 48v and 100 amps peak.
Here is a fun project using both:
This is awesome! Thanks for the info! I'll have to pick up a Odrive driver board
Im so using those for next robot
Looks like a nice board. It's comparable to a Roboclaw or a Sabertooth with a Kangaroo attached. It will be good to see if this board is as durable as the two I mentioned. It's good to have options.
I forgot to add a link to the control board. Here are some of the specs.
KEY SPECS Controls two motors. 24V and 48V versions available. Peak current >100A per motor. Continuous current depends on cooling: Details. Encoder feedback for arbitrarily precise movements. Supports two braking modes: Brake resistor. Regenerative braking. Optional use of a battery means you can achieve very high peak power output with only a modest power supply. Open source: Hardware, Software
INTERFACES USB -- Custom protocol, open source PC, RaspberryPi, etc. ROS node (coming soon). Step/direction -- Existing motion controllers UART -- Arduino (with library), mBed, etc. Servo PWM/PPM -- RC Recievers, Arduino, etc. CAN -- CANOpen and CiA 402 is a possibility. Some general purpose digital and analogue pins
PROTOCOLS Many types of command modes Goto (position control with trajectory planning) Position commands Velocity command Torque command
ODrive
...also circling back to my first post in this thread. Guardians 3 has officially been cancelled for 2019. This opens up my schedule and should included lots more robot building!