Here are two videos, readme files, walking gait .bas file
of a Biped Scout with (jittering cheap) MG995 servos detecting and avoiding walls by use of a SHARP GP12 sensor on a pan head micro servo.
plus a power sensing to go to sleep when power is running short.
Zipped, 6MB
I was planning on getting 20 of them before from ebay. They are DIRTY cheap. You can get a pair for like $10 on ebay. I was going to get like a 20 pack for a FRACTION of the cost of 5645s. But I decided not to because they aren’t well known.
How are the MGs working for you? No problems?
EDIT:
Just downloaded the zip (fast server! took only a few seconds =D) and watched the videos. Oh man, in the second video I feel sorry for the poor scout. It looks like he is having mini-seizures. Well, I’ll be sticking to 5645s for humanoids.
they ARE well known in multiple places… and he noted in his notes in the .zip file about the jitter which you can see in the video. But it doesn’t seem like it caused a big stability problem for this build so that’s awesome.
very nice work noDNA… nice idea to hang the battery so you had room for the servo and lowered the CoG… two birds with one stone.
edit: I’m curious about the mechanical reliability of those servos noDNA, did you have gears strip out or burn up any motors? Did you happen to crack any open? I am mostly wondering if they would be suitable to use with open servo controls…
They supposedly have metal gears. How strong they are, no idea. From the research i’ve done when I was originally looking at them I can tell these are not meant to be robotics servos.
They are generally used in RC boats and planes because they are cheap and have a fast rotation time. They do have 208oz in (supposedly), but they are not very strong at holding their position. As you can see the jittering in the notes and video.
It would be very cool if someone could get a couple of these and do some tests on them. Possibly figure out a way to make them not jitter.
I’ve seen them go very cheap. $5 a pop with crazy shipping, or a 20 pack for $300 shipped (230 + 70). High shipping as they are straight from gasp china.
Later on, if I have some money to burn I would like to try building a BRAT with some of these here servos.
