THANKS! Much appreciate the detailed response.

 

In my initial testing of the servos the GoBILDA 2000 Series Dual Mode Analog Servo (300 oz-in 0.2sec/60 degree) servos are dead quiet when holding a position under load. The Savox servo unfortunately is very noisy when holding a position under load. Fortunately, the GoBILDA servo is strong enough and reasonably fast enough to lift the arm up 145 degrees (a little bit over 1 second) with no problem. So I'm going with all GoBILDA servos for the arm. I'm working on the best order to connect the 3 servos together for the shoulder (i..e ordering of pitch , roll, yaw) to get the arm movements I want without one servo clashing into another one. I have spacers between the connection of one servo to another but haven't gotten a configuration I like yet. Plus I have to handle the case where power is off and the arm just hangs straight down without the servos getting into some weird twisted configuration. That may require some external tabs/hardware to limit the travel. If I have to I may just go with pitch, and yaw arm movement as that would be much , much easier to do but it wouldn't allow roll which allows neat arm movements when the elbow is bent. For the elbow bend I'm going to try the method that frightprops.com uses where the elbow motor is close to the shoulder area and it uses a straight linkage from it to the forearm just above the elbow to move the forearm about its elbow hinge.

 

Also I'm using servo city servo blocks to put the servos in to handle the other lateral stresses.

 

Excellent job mike (sorry didn't see this sooner as I had to re-subscribe to push notifications due to the newer haunt forum bbs). I like the idea of using wifi as it reduces wiring from the user. I'm working on adding in real time right arm movement to my prop.( 3 axis arm shoulder and 1 axis elbow).

 

If I may, what are you using to move the shoulder and elbow? I'm wondering what can handle the weight / torque.

 

Greta job on this.

 

Man, that is the coolest thing ever!