emuller

Three legs!!!. wonderful!,

Three legs!!!. wonderful!,

How does it walk? we should talk, I am trying to make a 3legged walking machine - one that does not stagger and walks elegantly.

Can you construct a brief description of it’s motion?

graphworlok

That looks nicely done - you
That looks nicely done - you should check out swashbot 2 from CrabFu http://www.crabfu.com/swashbot/swashbot2.html

aniss1001

3 legs and 3 servos
I’m also very curious as to how this thing will walk

endura

some more pics

i just uploded some more pics

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0204_600x800.jpg

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0206_600x800.jpg

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0207_600x800.jpg

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0208_600x800.jpg

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0211_600x800.jpg

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0214_600x800.jpg

http://i579.photobucket.com/albums/ss231/endurafactor/IMG_0215_600x800.jpg

1 reply

aniss1001

servos

1st off…are you powering all the servos from the Arduino? That would explain the resets because it simply can’t supply that amount of current. You have to power the servos using an external power source. Also make sure that the grounds (external + Arduino) are connected.

And you don’t need an H-bridge to control servos. A servo allready has an H-bridge built in (unlike DC motors).

1 reply

endura

thanks that clears things up

thanks for the info i no the servos need 5 volts what power sauce should i use to supply enough electricity/current to 4 servos?

Regards Endura

1 reply

aniss1001

Well…

I believe you’d typically use 4 1.2V NiMH batteries (1.2V * 4 = 4.8V). You may wanna find out what the (peak) current draw of your particular servos is, and make sure the batteries can supply that much current.

On this page you can see the current draw of various popular servos. Yours may be there…

But there are lots of ways to power your servos…wall adapter, 9V battery with a voltage regulator…What did you have in mind?

1 reply

endura

thanks agean
i was thinking of useing 9V battery with a voltage regulator as i have a few 9v battery clips laying around and it will be lighter to carry on the bot anyway you have given me a lot to think about now i appreciate it i hope i will have this finished very soon will keep on updating here as i go have a good one

1 reply

ignoblegnome

Really cool looking bot.

Really cool looking bot. Good luck with it.

Just a nitpick, your pics are all blurry!

endura

I give up.

Well i have being trying for days now to get him to walk but the logic behind getting all three legs walking in sink is a bit beyond my current skill level so i will come back to him oneday thanks for all your help i would not have gotten so far without it. I have started a new robot project with 6 legs i will upload some pics ASAP.

Regards Endura