I've been doing more testing on my SpotMicro DIY robot dog. It looks like he will fall back onto one of his legs if he moves backwards. I'm not sure why this is happening yet.
It is getting a little warm, I think it is a tad warmer than the other servos. I'm hoping it isn't hot enough to deform plastic. Have you ever gotten a hobby servo hot enough to do that?
Yes I have 😞 I had the robot standing maintaining its balance while looking through the code to see what the sensors were returning when the robot fell over, back right let go in this instance. The servo was very warm and the PLA printed writ had deformed at the lower servo mount allowing that leg to collapse 😞 @@AdvancedHobbyLab
At the time I was running 7.4V on a 23Kg JX Servo PDI-HV5523MG Servo rated to 8.4v. The power was sourced from a Riden RD6012 power supply, but the 3 meter long 0.75mm CSA wire could have caused a bit of voltage drop. The servo survived, but I did have to re-print the wrist and replace it. I have since replaced all the leg printed components with SLA printer Anycubic Tough Resin, this does not get soft with heat. I'm thinking I might need to consider also adding in thermistors to monitor at least 8 of the servos temps, however it's always been the wrist servos I have had the most heat issues with.
I think I am using the same servos as you also running at 7.4V so that might be the issue. Printing in SLA is a good idea. Unfortunately, I don't think my SLA printer is large enough, so my dog may have to just deal with a limp until I can upgrade my lab.
I think that is possible. The battery should be powerful enough, but I wonder if the wires that I'm using are too thin and adding too much resistance to carry enough current.
