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Servo Recorder

Record and play back servo movements on your robot at specified speed and direction

+ How To Add This Control To Your Project (Click to Expand)
  1. Make sure you have the latest version of ARC installed.
  2. Select the Get button in this page to download the archive file.
  3. Double click the downloaded archive file to execute installer.
  4. The installer will add this control to ARC.
  5. Load ARC and press the Project -> Add Control button from the menu.
  6. Choose the Servo category tab.
  7. Press the Servo Recorder icon to add the control to your project.

Manual

This plugin allows recording and replaying servo movements in specified speeds and direction. Trigger the recording playback and speed using ControlCommand() from scripts.

Realistic Motions
For realistic motion recordings, we recommend creating the recordings with the servo Pad Control. Find more information about the servo Pad here: http://www.ez-robot.com/Tutorials/Help.aspx?id=150

Recording
You can store multiple recordings in this plugin. Each can be given a unique name that allows the recordings to be differentiated - click on the name to rename a recording. Pressing the Add button will append a new recording instance to the list. You may re-record over existing recordings as well. Press the Record button, which will set the instance to begin recording at the first servo movement.

Playback
Individual or multiple recordings can be played back manually by pressing the Play button. Programmatically, you can play recordings using ezscript or Blockly. In Blockly, select the recording from the ControlCommand() block located under Utility. With ezscript, the Cheat Sheet shows the ControlCommand() for starting and stopping the playback of each recording.

Playback Speeds & Direction
The modifier allows playback of speed and direction. A value of 1 means original playback speed in forward direction. A value of -1 means original playback speed in reverse direction. The ControlCommand() also accepts an optional parameter for speed. You can specify a value between -5 and +5 with 0.1 increments. For example -0.5 is half speed in reverse. Half speed forward is 0.5.

There is also a ControlCommand() to set the speed while a recording is being played back. You can programatically reverse the playback direction with the ControlCommand() speed parameter, or change the speed.

Code:


// Play Reverse at half speed
ControlCommand("Servo Recorder", "Play", "No Name", -0.5);

// Wait for 2 seconds
sleep(2000);

// Set the speed to play forward at half speed
ControlCommand("Servo Recorder", "Speed", "No Name", 0.5);


Variable
There is a variable that returns the status of the playback of recordings. If a recording is being played back, the variable $IsServoRecorderRunning will be true. You can wait for a playback to complete by using WaitFor(). See this example code below, which will run Test 1, Test 2 and Test 3 recordings one after another. The WaitFor() will wait to see when the recording has completed, and the Sleep(100) is merely to ensure the recording has started before checking the variable. The sleep(100) is most likely not required, and my tests without it worked - but I put it in for safe practice. Test in your application to see if it's required as well, it may not be.

Code:

print("Playing test 1")

ControlCommand("Servo Recorder", Play, "test 1")

# Wait a short while to ensure record is running
sleep(100)

# Wait for the recorder to stop running
waitfor($IsServoRecorderRunning = false)

print("Playing test 2")

ControlCommand("Servo Recorder", Play, "test 2")

# Wait a short while to ensure record is running
sleep(100)

# Wait for the recorder to stop running
waitfor($IsServoRecorderRunning = false)

print("Playing test 3")

ControlCommand("Servo Recorder", Play, "test 3")

# Wait a short while to ensure record is running
sleep(100)

# Wait for the recorder to stop running
waitfor($IsServoRecorderRunning = false)



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PRO MEMBER
USA
#1  
Is there a way to "play" several servo recorders in a script, where each recorded action finishes before playing the next one. I want to play three servo recorder recordings, one after the previous one finishes. I cant use sleep as the sleep would need to be exact length of servo recorder and they need to appear as one long seamless animation. I tried just adding all three to a master script and they all play at the same time. I need something like a play and wait to finish, before moving to the next servo recorder. I'm prolly missing something obvious.

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#2  
I don't know how to do that but it sure would be great to have something like 'SayEZBWait' or in this case 'ControlCommandWait'
PRO MEMBER
USA
#3  
Exactly what I was thinking Bob!
#4   — Edited
My first thought is:
Three scripts each with one of your recordings controlCommands each
Then with a forth script call each of the scripts using the ControlCommand with the wait. 
3 extra scripts but the result will work.
#5  
I am sure I am (as usual) overthinking this, but if each of your servo recordings ends with one of the servos going to a unique position (or even moves a servo that otherwise is not used.  Could even be a hidden servo not connected to anything) you could then use the [color=#442e5f][size=3][font=OpenSans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"][b]Servo_Wait ( digitalPort, higher/lower/equals, value) [/font][/size][/color][/b][color=#442e5f][size=3][font=OpenSans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"][color=#442e5f][size=3][font=OpenSans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"]or [/font][/size][/color][color=#442e5f][size=3][font=OpenSans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"][b]WaitForServoMove (servoPort, [timeout MS])[/font][/size][/color][/b]
[color=#442e5f][size=3][font=OpenSans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"] command to initiate the next ControlCommand. [/font][/size][/color][/font][/size][/color]
PRO MEMBER
USA
#6   — Edited
@rz90208 Thats what i thought of last night. I had a good read through DJs commandcontrol in the manual. Some good stuff in there.

After reading that i tried creating 3 separate scripts, each with a servo recording in them like this this one ::

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Then I was able to create a new script and use the command with wait. Like this:

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But When i run i run the loop i get the following error:

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PRO MEMBER
Synthiam
#7   — Edited
The update of this control has a variable which returns the status. Read the description to see how to use it for your use case.

*Note: I moved this question to a comment under the specific control - since it's related directly to this control for organization. We like to keep things organized
PRO MEMBER
USA
#8  
Thank you very much. Hopefully I'll get the hang of posting in the right area! Its hard to teach an old dog new tricks!
PRO MEMBER
USA
#9   — Edited
When i run this script i don't get errors but it runs all the scripts at the same time it doesn't wait for the next one to complete. Am I doing something wrong? For sure.......nearly blew apart Alan..looked like a scene from Total Recall when they are gasping for air on mars....





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#10  
I think you need to check for the word false, not 0.  That is what DJ's example shows. 

You can always check the content of variables using variable watcher to see what they show with a simpler script before committing multiple lines that could conflict.
PRO MEMBER
USA
#11   — Edited
I did try both, 0 and false.  Neither worked for me. When I run the above script, all the other servo recorder play buttons are active at the same time (red). See Pic and you can see the variable watch throwing back a 1 as true its running and running all the servo recorders at once.

And yes, it was stupid to have the robot active during this stage of testing..that wont happen again.
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PRO MEMBER
Synthiam
#12   — Edited
Ooops - I was distracted with family on new years eve and didn't pay attention to the example code syntax. Check the description now, it has the correct WaitFor() syntax. WaitFor() expects an expression.

Code:


ControlCommand("Servo Recorder", Play, "test 1")

# Wait a short while to ensure record is running
sleep(100)

# Wait for the recorder to stop running
waitfor($IsServoRecorderRunning = false)

print("Playing test 2")

ControlCommand("Servo Recorder", Play, "test 2")


This is a good example that you can proof my work in the future :). Next time check the EZ-Script manual to see if i presented the correct syntax, because I'm not perfect haha
PRO MEMBER
USA
#13  
Much better. Thank you, now works as advertised!
PRO MEMBER
USA
#14  
Is there a reason why this control does not have an option to move to other desktops using right click in the title bar? When i save and reload the servo recorder windows move from desktop to desktop but don't have the option to move them back ie F11,F12 etc
PRO MEMBER
Synthiam
#15  
Plugins don't support that currently
PRO MEMBER
USA
#16  
Ok Thanks very much. And again thanks for this variable!!
PRO MEMBER
USA
#17  
Thank you for this update.
PRO MEMBER
USA
#18  
Servo Recorder works well, thanks

EzAng