UPdate 20140727 :- 4 legs = QuadPod


Update 20140725 :- Supplies arrive

The actual Veyron servo controller ....Servos (big heap) and 2 times 8A Ubecs

First Impression of the Veyron servo board.... Very flexible , easy to set up , dip sx for baud rate (YAY) , native xbee slot , screw terminals for the power stuff (although my Ubec was designed to plug direct into a spare servo connector), extra tapping points for 3.3V, 5V .... and even a dip sx to select an eprom if you would wish to delve deeper into the onboard arm chip (the chip itself has 2 adc inputs)

So far only tested 3 legs....and it works well .. no issues with Ubec ...so cool runnings....time to print some more.


Update 20140717 :- Shaolin monk single thumb presses..

 

 

 

 

Lumi over @ dfrobots gave a heads up that a number of these freshly painted Servo Controllers were rolling off the production line and in need of "Running in", no guesses,  I just jumped at the chance as I had to "Pimp My Ride"

Here is a quick look at the Chassis in mind.

Two printed (and quite a few iterative bits) and a Swiss_Cheese base .... plan is to make the base in a way that I can simply add/subtract legs etcetc...it would make life easier if i can them adjust its leg gait and distance between shoulder joints.

Leg 3 prints...... servo mount with heat vent holes .....(hmmm)

dwilli9013

10 years 4 months ago

Bad Ass Gareth I can't wait to see this as it progresses.

 

I am using MG90S .... they are basically a metal geared version of the cost effective Chinese blue ones everyone has in there servo box .

They pack quite a punch and are very fast... although they seem to have only 180° working range...... I will have to disassemble one and do a few snips here and there i guess.

GroG

10 years 4 months ago

WOW ! .. it's looking creepy good Gareth...  I keep imagining 6+ Legs all running along :)

Your initial design has 8 legs .. what about having just 6 then with the other servos you could make
GIANT SCARY MANDIBLES !!!!

AHHHHH !

I could also go for Mr.Salty with one BIG claw..

(then small leg minus servos flopping around to gain 3 servos)

I am also sure it will be tested with 6 legs (even 4 at a sea mariners push).

For sure 24 servos will not leave any spare , as its an XBee link my idea is to use a Propeller chip as a serial pass though - which means I can add extra servos (UV laser) etc.

Next job is to see what is leaking out of the supplied Servo control Gui...

"leaking out of hte supplied Servo control GUI" ? 

FYI - nothing the non-gui Servo doesn't do.  The GUI just sends messages to the Servo service. So if you go the Servo service coverted .. you got it ALL covered ...   GUI's are not allow to talk to hardware directly, all gui's talk to services..   

                     Concordantly.. Ergo .. Vis-a-vis ...

 

I have wired up a couple to Xbees to check the output of the Veyron servo controller and it spits out this :-

#0P1177
#0P1200
#0P1211
#0P1233
#0P1255
#0P1277
#0P1277
#0P1311
#0P1311
#0P1333
#0P1355 etcetc (this is a snippet from a ramp up on servo 0 (0-180°)

On further investigation i found thier Interesting protocol details here :- Veyron Servo controller

# <ch> P <pw> S <spd> ...# <ch> P <pw> S <spd> T <time><cr> 
  • <ch>: Servo channel number, 0 - 23
  • <pw>: pulse width(us), 500 - 2500; the destination position
  • <spd>: single-channel speed (us/s)(Optional)
  • <cr>: carriage return, the symbol of the end, ASCII code 13 (Required)
  • <esc>: Cancel the current command, ASCI code 27

GroG

10 years 4 months ago

The "DFServo (Virtual Servo Controller)" looks like a pretty nice application...
Have you used it?

Pros ?  Cons?

I'm trying to accumulate ideas for MRL's Servo Orchestrator ...

"Poser" from Rofi has similar parts 

And Lynx Motion Servo Sequencer

GroG

10 years 4 months ago

In reply to by Gareth

Your review on the software ?  Good Bad ?  Parts you like or do not like ? Parts you think could be better?