Canada
Asked — Edited

Wheeler Chair Robot

I saw that last year somebody had built a wheel chair robot?. My idea for the new Robot will be as a stage mascot that can also pretend to play the drums on stage. My brother has a live Metal band every Saturday night and most of the time we have trouble with no drummer showing up. We end up using a Drum machine instead with the 2 other guys on real guitars and singing. So Terminator will be able to move around and substitute behind the drum kit with the Live drum machine signal activating terminator arms at the drums. Also need him to move around in a wheel chair , so is anyone out there that has done this wheel chair hack, looking for suggestions on power/motor controller connections etc...should not be too hard just larger than I'm used to building. This is a youtuber that bought what I just bought,takes a month to get from China and we are building the rest of the Endoskeleton to integrate in wheel chair....


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#129   — Edited

Ah ha ha! I should have known that spot is Quick sand because that is where it turns into a pond every time it rains,very soft sand there. Well now the real work begins installing all the new servos and sensors. I need to add a 4X4 wood axel there at the front motors since the puny aluminum bars don't do much to keep the wheels straight but it did work fairly good this time. I am very happy with the rear swivel wheels and so far all the testing he has not fallen over,I am thinking about adding a Dalek skirt around the mobile base with bump sensors all around it. Would kind of resemble "Davros" King of the Daleks,I don't know we will see,my brain is always over-thinking stuff,LOL!

#130  

Well well well, Jeremie , I am so far really impressed with these HDD servos you engineered! If any of you ever had the Robosapien V2 with the huge clunky arms and saw how many plastic gears were needed for the tiny motor to lift them up. I can now confirm that a single shoulder HDD servo has the power and torque to do the job to lift entire V2 arm ! Very impressed,will buy more!

PRO
Canada
#131  

Thanks for the props @Robo Rad

Yeah I really like the HDD servos too. The manufacturer took quite some time to meet all our requirements but once they finally did we were very happy.

#132  

Oh yeahhhh, working hard to get Terminator ready for some summer fun. I was watching the Terminator movies to replicate the walking movements related to the arm movements when carrying weapons,shooting etc,I am programming the arm servos to mimic their style. (In Exoskeleton battle scenes). I have my A.E.G. BB auto firing Rifle shortened to fit Terminator Hip side. The Ez cam will point to targets and gun will be aimed at center of video hopefully hitting the targets I set up in the yard. Eventually the Terminator will learn to hit certain targets by itself. I have a red dot target sight but thinking about adding a green Laser to make accurate shooting.

#133  

Now you made the mistake of arming him!!!! Skyyyyyynet!!!:D

#134  

I have added the Sharp IR Sensor to help out with collision avoidance and used the EZB-v3 since it has the excellent 5 volt regulator and can take many 5 volt sensors there! The Latte panda should be here tomorrow as well.The EZb-4 will still have many great scripts running with the EZ cam attached to the Gun sight, Will add that eerie Terminator red view with distorted flanger sound and the target aquired visuals that I can watch on my big tv to see what he shoots at.Also still using my cool Google voice as I am using my old cell phone hooked up to the mini Amp speaker, but I can still use the EZB speak on the fly if some intruder gets in the way

#135   — Edited

Well that Latte Panda just came in with the 7"display that fits perfectly just over the EZB-3 ,the acrylic case comes in a million pieces that I need to put together so that I can mount it on the robot and protect it from the elements and I also bought the tiny cpu fan that will just fit with the case. It is the 4Gig ram version so it should be spunky!  The only problem is I  bought this tiny 9 gram servo that was to be used for a sharp IR radar sweeper but the servo is analog and no matter what EZB pins I try it just mover violently to the right with any ARC control I try?? I am new to using servos and the EZ HDD servos work great but this brand ,not sure what to do. This is the servo here....https://www.robotshop.com/ca/en/9g-micro-servo-motor-4-8v.html

added-----Also the tiny servo power wires ( +5v and Ground) go to the EZB-3 for 5 volts from the regulator and the signal wire I tried adding to any analog or even digital pin on the EZB-4 but no good so far.

#136   — Edited

ARC will control analog servos just fine. I use analog servos exclusively in my B9 robot.

Do you have the two EZB's neutrals (grounds) tied together? If not try that.

Also make sure you set the max and min range for the servo in the servo control or in an INT script at ARC startup. Make sure the servo start position is inside that range. Setting the range and start position in an INT is the best way. Here's the section from my INT script that sets these for me:

# #Specify the ranges for the servos
# #this prevents the servos from ever going past these limits

# Rt side_to_side Wrist
SetServoMin(2.D0, 120)
SetServoMax(2.D0, 165)

# Rt Up_Dn Wrist Servo
SetServoMin(2.D1, 20)
SetServoMax(2.D1, 170)

# Right Claw
SetServoMin(2.D3, 77)
SetServoMax(2.D3, 99)

# Left Up_Dn Wrist Servo
SetServoMin(2.D4, 14)
SetServoMax(2.D4, 180)

# Left side_to_side Wrist
SetServoMin(2.D5, 82)
SetServoMax(2.D5, 138)

# Left Claw
SetServoMin(2.D6, 68)
SetServoMax(2.D6, 90)

# Bubble Blocks
SetServoMin(D15, 85)
SetServoMax(D15, 177)

# Bubble Servo
SetServoMin(D1, 45)
SetServoMax(D1, 97)

# -------------------------------------------------------
Sleep(50)

# # Srart and Set servo Speeds & Position
Servo(D1, 80) #Move Bubble Lifter servo to rest postion
Sleep(100)
ServoSpeed(D1,20) # Bubble Lifter Servo
Sleep(100)
Set(D10, On) #Bubble 0n servo Power after move command to keep from jumping.
Sleep(100)