Strange type of foot sensor?
Strange type of foot sensor?
by NovaOne
Sat Dec 08, 2007 8:58 am
Does anyone know the anything about using a potentiometer as a foot pressure sensor? I can't image it protrudes much on the bottom, how would this configuration help?
http://supermachine.cocolog-nifty.com/photos/uncategorized/2007/11/15/0711152.jpg
http://supermachine.cocolog-nifty.com/photos/uncategorized/2007/11/15/0711151.jpg
Note: R-Blue has the coolest hands!
http://supermachine.cocolog-nifty.com/photos/uncategorized/2007/11/06/0711062.jpg
http://supermachine.cocolog-nifty.com/photos/uncategorized/2007/11/15/0711152.jpg
http://supermachine.cocolog-nifty.com/photos/uncategorized/2007/11/15/0711151.jpg
Note: R-Blue has the coolest hands!
http://supermachine.cocolog-nifty.com/photos/uncategorized/2007/11/06/0711062.jpg
by NovaOne
Sat Dec 08, 2007 3:05 pm
Thanks Jon, I understand you are using four Force Sensing Resistors per foot, in concert with an IMU and PC for processing muscle?
As a first step for me the two sensors per foot method should be easier?
The amount of movement required by the potentiometer should give warning of foot falling sooner than FSRs, could this be useful?
Stating the obvious: If he only use two sensors in the toe and heel, when the robot is on one foot they would not aid in side to side balance
Are extra sensors just am over complication, unless the data is going to be processed by a more advanced system like yours, Jon?
As a first step for me the two sensors per foot method should be easier?
The amount of movement required by the potentiometer should give warning of foot falling sooner than FSRs, could this be useful?
Stating the obvious: If he only use two sensors in the toe and heel, when the robot is on one foot they would not aid in side to side balance
Are extra sensors just am over complication, unless the data is going to be processed by a more advanced system like yours, Jon?
by JonHylands
Sat Dec 08, 2007 9:43 pm
It really depends on whether or not your robot spends time on one foot. If you are on both feet, you effectively have side-to-side balance using each foot. If you're on one foot, then of course you lose that.
My robots are designed to walk with one foot on the ground at a time, so I really need the four sensors.
- Jon
My robots are designed to walk with one foot on the ground at a time, so I really need the four sensors.
- Jon
by NovaOne
Sat Dec 08, 2007 10:44 pm
Yeh I see what you mean;
I may be wrong, but I suppose R-Blue is designed primarily for fighting so two leg stability is very important. When any current robot is on one leg in a battle and gets hit there isn't much it can do but get back onto two legs ASAP or fall over?
I'll remember that the next time I face BillB in the ring, (oh and i'll try to remember what the remote control buttons do as well
)
I may be wrong, but I suppose R-Blue is designed primarily for fighting so two leg stability is very important. When any current robot is on one leg in a battle and gets hit there isn't much it can do but get back onto two legs ASAP or fall over?
I'll remember that the next time I face BillB in the ring, (oh and i'll try to remember what the remote control buttons do as well
)