Climbing the pyramid

I may get it.
We might need a double jointed arm.
A pivit at the claw.

sorry, i was unclear

there is one arm on either end of the robot
the first can reach the lowest bar without too much hassle
the robot lifts up, hanging on the bar
the frame of the robot only protrudes a few inches into zone 2
the second arm now has to span the rest of the distance, which is 30"+

a double jointed arm seems to be the easiest solution at this point

Ken the arm probably is halfway up the height because it must be used twice.
When it flips the arm is needed to be used on the wheel side.
If the halfway point is below 30 inches the arm is reaching up therefore the pivot point is below the bar and the robot therefore is below the bar.

What method of climbing are we talking about, Im rather confused still

Going up the outside, your idea, with torque arm.

Adnaan, we need visual!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

files are are being processed as we speak
its my fault actually,ive wouldve been done earlier, but got distracted with an idea for the design of the arm itself
if everything goes smoothly (ie internet not crapping out), ill have a link on the forum within a half hour tops

I am wrong it is only used once but the pivot must be above the 30"

[url=https://youtu.be/u3n0fqkAnPg ]https://youtu.be/u3n0fqkAnPg [/url]

The arm needs to be at least 30 inches off the ground.
Can you change this.

If the arm length is shortened, we would gain more height, if the robot was about 30" high and 32" long, we could climb with shorter arms, and put less stress on the arm parts.

I drew this diagram on auto sketch with a pivit arm that is in two section each at 15" , it then can span 30 inches total, what do you think?

Slight re-interpretation of the rules:
The robot can be touching in any 2 "zones" but not 3 or more.
The robot has to touch each zone on its way up, in order.

this means if we get slightly off the ground *by using the bars in zone 1*, we could reach for level 3 since we are allowed 84" in height in our zone
nevermind, misinterpreted.

kenneth wrote:If the arm length is shortened, we would gain more height, if the robot was about 30" high and 32" long, we could climb with shorter arms, and put less stress on the arm parts.

if the bars are 30" and the robot is 30 " it might be too high,

It looks good john but we really do not want a double jointed arm if we do not need to which I do not think we need.

I was thinking like a real arm, if i raise my shoulder slightly then pivit wih my elbow more the force on my shoulder is less, if i straight arm it the force on my shoulder is more. Working them together spreads the force required to lift over 2 spots, less chance of a tear, ( in this case a break ). By using this we can center the robot in the middle and climb.
anyway just an idea, back to marking , saw something on line might post later

the amount of work done to rotate at each point will still be the same as if you were to strait arm it. in the case of lifting the robot, the entire mass of the robot is still taken at the point where the arm meets the frame either way.

I'd like to point out that approximately 2 minutes 13 seconds into Adnaan's video (2:13) that the arm that grabs on to the bar for level 1 will need to then be completely inside the frame of the robot if we try to flip end over end. I understand that the inability to reach level 2 is the main problem, however I feel it's also important to note that should we modify this climbing method, that should the 30 inch (or however long) arm exist inside the frame of the robot, then that will require much 'emptiness' to be present inside the robot.

Again, it's a trade-off for how much space we won't have to work with inside the robot and how much we want to climb that pyramid by modifying out current idea to climb.

the reason i took so long to make the video is because i came across the same problem matt mentioned
i was trying to experiment with L-shaped arms but changed them back for the video so as to focus on one problem at a time

Since the rule says we can be in 2 zones at once and only need to touch each zone on the way up, we could stay on the floor, touch level 1, then grab on level 2 to lift, without touching zone 1 and 2 at the same time
then grab in level 3 and its over

remember the floor counts as zone 0, so we have to be off the ground before we can legally grab the bar in zone 2

pretty sure thats what you meant, but it was unclear and just wanted to make sure noone gets confused

basically drive up to the pyramid, hit zone 1, then back up and grab in zone 2. Then we would have to climb without touching zone 0 and 1 at the same time

dimensions and positioning

right after finishing the video i realized that i think with the way i made the robot climb we were still in zone 2 at the end
and i get the sinking feeling that im right....

Maybe a breakthrough
Use a wedge with a slot as shown which hooks onto the ramp then rotated. The wedge has to be deployed, then held in place by a brake of some sort, then we drive into a horizontal bar near a corner of the pyramid and also use the "torque bar" idea