Robotics Weekly Newsletter - Tuesday, July 29, 2014

Robotics newsletter

Top new questions this week: Exoskeleton Drive System Help I am currently working on an exoskeleton. The exoskeleton is going to help kids with cerebral palsy learn to walk 4 years sooner than traditional therapy. Currently we are using 2 Ame 226-3003 with … motor control microcontroller motion-planning encoding   asked by Joel 1 vote answered by John Williams 0 votes Stepper does not turn I always wanted to have a CNC to make PCB quickly at home. Finally, I got a 7x7 kit from zentools recently and put it together. I attached a battery powered screw driver to 2nd shaft of the stepper … stepper-motor cnc   asked by dvdnhm 1 vote answered by dvdnhm 0 votes Compact design - building from off-the-shelf components I want to build a small cylindrical arm, with a main 360º angular servo on the longitudinal axis, and a secondary angular servo with variable speed in a trasversal axis that rotates with the main … servomotor   asked by lurscher 1 vote PID Integration over not constant dt (∆time) Is integration over not constant dt (∆time) a possible thing? Let's say you have a PID loop with differentiating frequency, can the integral part of it still work? (Assuming you know the dt from the … quadcopter pid real-time   asked by Dan Barzilay 1 vote answered by ryan0270 0 votes Calculate object distance with camera Firstly I'm unsure whether this question belongs here or on another SE site (but I'll wing it for now). I've recently been given the job of connecting up a 'smart camera' to a setup where a robotic … localization calibration cameras   asked by Robert English 1 vote answered by ryan0270 0 votes Greatest hits from previous weeks: Quadcopter Localization Beacon I want to use an RF beacon to localize my quadcopter for autolanding, when GPS is not precise enough, for example, when my driveway is only 10 feet wide, and the GPS is only showing 20-30 ft. accuracy … localization quadrotor gps   asked by Chris 12 votes answered by Rocketmagnet 5 votes Choosing path planning and obstacle avoidance algorithm for 2D space I am working on a 2D space where my robot needs to follow a trajectory while avoiding some obstacles. I've read recently about methods for path planning as "Vector Field Histogram" and the "Dynamic … mobile-robot motion-planning   asked by Spyros 4 votes answered by Tom Bamber 2 votes

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