TNMike
USA
Asked
— Edited
Hi all
In my on-again/off-again Hero 1 reburb project I've given up on trying to use the stepper motors for the steering, head and arms. Can someone suggest a good sized servo or setup to use for these? The steering motor shaft is pretty big (larger than 1/4" at least).
Thanks!
I am also working on a Hero rebuild, and found that I could drive the same motor from an L298 motor driver board with no issues. See my blog here (http://www.gregsherorobot.blogspot.com) I have pictures of the setup.
The big issue you will have is the actual steering...since every time you turn on the robot, where ever the stepper is it considers home. You will have to make limit switches and then use a homing routine to keep this in check...even with that, it will steer a little crooked unless you keep the stepper powered during movement (which builds heat like crazy).
I am investigating a 1/4 scale servo right now to make the job easier.
Greg
A good quarter scale servo to try might be the Hite hs805, is good for over 343oz of torque.
I just posted up some pictures on my blog with the mount for the 1/4 scale servo I just mounted tonight on my Hero Junior. I gave it temporary power through the EZB and it moved very smoothly. I will have to slow it down though...too quick for the old robot to comfortable take corners with!
Just a thought.I would replace the free running wheels with dc motors with wheels and install a caster in place of steering stepper motor. This is what I did for my Hero jr Moshi.You can see pics in my profile.
@GregSS
What size/type coupler did you use for the connection? Thanks
I just found this computer chronicles video of the hero 1... i really want one some day!
I'm working on my third one. I got them by good old fashion horsetrading. This one I've stripped all the original boards out and am working on re-doing it with EZ-Robot.