Subject:
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Re: Tacho Limit and Braking
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Mon, 2 Oct 2006 16:59:34 GMT
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Viewed:
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11491 times
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In lugnet.robotics.nxt, <dickswan@sbcglobal.net> wrote:
>
> If you want to try something a little different, use RobotC to do this.
> There are several advantages to this:
>
> * It can be done with one "setout" opcode.
This is incorrect. There is no "setout" opcode in RobotC. RobotC uses a
proprietary commercial alternate firmware with a completely different set of
opcodes and virtual machine functionality than the standard NXT firmware.
Unfortunately, the RobotC and Robolab 2.9 firmwares both masquerade as the
standard NXT firmware which has caused a great deal of confusion among NXT users
when they try to execute an NXT-G program and they get a file error message on
the NXT.
> * It will smoothly slow down and brake precisely at target encoder
> value. NXT-G and NBC will always overshoot and then correct.
This is also incorrect. Using NBC you can control your motors however you wish,
including smoothly slowing down and braking precisely at the target encoder
value.
> The RobotC code to move forward 90 encoder ticks is very simple -- it's
> two lines of code.
In NBC it is one line of code:
Rotate(OUT_A, 45, 75); // motor port, angle, power
Hope this helps,
John Hansen
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Message has 1 Reply:
 | | RE: Tacho Limit and Braking
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| (...) You can do just about anything with one line of code if you count user subroutine and user macro calls as "one line". The "Rotate" macro in your example expands to four lines of code that sets up and calls a user program subroutine that is (...) (18 years ago, 2-Oct-06, to lugnet.robotics.nxt)
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Message is in Reply To:
| | RE: Tacho Limit and Braking
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| If you want to try something a little different, use RobotC to do this. There are several advantages to this: * It can be done with one "setout" opcode. * The RobotC PID algorithm for this type of movement is different than the NXT-G (...) (18 years ago, 2-Oct-06, to lugnet.robotics.nxt)
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