Robotics Stack Exchange
Robotics Stack Exchange

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Can you have a career in robotics if you hate mechanics?

I'm a first year electronics engineering student. I love almost all the aspects of robotics - the electronics, algorithms, control theory etc. I can't stand the mechanical aspect of robotics though. Can I have a fulfilling career in Robotics if I…
askjasbdalskjdb
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The Jacobian resulted from Screw method is different from analytical one (Example Inside)

I am currently solving a kinematics example that asks for the Jacobian. However, when I solve it using the Screw method I get different results from the analytical method, The example is kinda hard to write here but I will demonstrate on a 2D RR…
Forenkazan1
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What is the advantage having seven degrees of freedom in a robotic arm?

I understand what six degrees of freedom is, but I encountered the term of seven degrees of freedom at multiple occasions in robotics. What does is the purpose of that extra degree of freedom?
Cedric Martens
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What is telemetry used for?

I'm pretty new to the world of UAS after a ten year holiday from RC flying. I'm looking at Ardupilot and am wondering what purpose telemetry serves? Is it just to get in flight data back to a ground station or can it also be used to program the…
Mark Williams
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Will wiring a unipolar stepper to a bipolar stepper driver decrease the holding torque?

I have read that you can wire a unipolar stepper to a bipolar driver, which I have, by ignoring the two extra wires. One concern I have is whether connecting a unipolar stepper to a bipolar driver will cause it to lose torque (holding or operating)?…
Anonymous Penguin
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Why do we need coriolis and centrifugal forces when it comes to the dynamics of a robotic arm?

So we all know (and love) the typical dynamic equation of a robotic arm: $$ M(q) \ddot{q}+C(q,\dot{q})\dot{q}+G(q)=\tau $$ Where M is the mass matrix, G is gravity and C is Coriolis and Centrifugal forces. Coriolis and Centrifugal forces are pseudo…
Metalzero2
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question about spatial velocity in the book

I think the equation(3.73) should be: $\dot p-w_s$x$p=\dot p-\dot p=0$ have no idea how it can be wrong and don't know the difference between infinitely large body and a body just include the fix-frame origin and body-frame origin
E Takly
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Control VS artificial intelligence?

I have heard of both the terms AI (artificial intelligence) based robots and control based robots. Although they are both different fields, what is the difference between AI and control in regards to application (since both are doing same task of…
DSP_CS
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PID control: zero out integral on error sign change?

I am learning about PID as a novice to robotics (background in software engineering). One common problem with PID is that if the PV is below the SP for a long time, integral term will accumulate a large positive value which causes us to overshoot…
rampatowl
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How Can A Total Beginner Become A Skilled Roboticist?

Say the only computer skill you have is programming in C/C++...what all things would you have to learn in order to be an adept full stack roboticist, one who can single-handedly build an autonomous/AI robot from the ground up(hardware, firmware, and…
Coder Motor
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Strafing of Mecanum wheels

I am part of my college robotics team. We are participating in Robocon 2014 and are thinking about using mecanum wheels. We have done our research but one thing id like to clarify is: Does the number of rollers in the mecanum wheel effect its…
kevin
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Multiple machine ROS image transmission error

I'm currently trying to establish communication between my Raspberry Pi based robot and a Cluster which are on the same network. Although I am able to ping and SSH one device using the other, I'm still not able to initialise the Raspicam…
DT1729
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Not able to communicate with Roomba with serial port

I have an IRobot Roomba model number 565 and I am trying to control it with a Wemos D1 mini with Roomba's OI. I connected the TX and RX pins from my FTDI adapter to the Roombas RX and TX and I can see information (battery firmware and etc) pop up in…
Aalian khan
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What is the difference between the pose of a robot and the configuration of a robot?

Do "configuration" and "pose" means the same thing? If not what is the difference?
Tommaso Bendinelli
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Yaw drift when implementing AHRS filter fusion

I am using the Matlab AHRS filter fusion algorithm with an InvenSense ICM-20948 to determine object orientation. I seem to be obtaining reasonable results however I am getting what appears to be substantial yaw/heading drift (please see attached…
Ben
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