Windows/android 2015.02.06.00

(Autonomous Robot Control Software)
Make robots with the easiest robot programming software. Experience user-friendly features that make any robot easy to program.

Change Release Notes

  • Fixed object in use elsewhere error from:

  • New window will display the size breakdown of a project (can be accessed by the Project Details menu or the Save To EZCloud menu)

  • added HTTP StartServer ControlCommand() fix

  • ControlCommand now takes $variable as parameter

  • updated roli project with accurate frames for dance routine

ARC Downloads

ARC Free


  • Includes a free 3rd party plugin robot skill per project
  • GPT-Powered AI support
  • Free with trial limitations

For schools, personal use & organizations. This edition is updated every 6-12 months.



Only $8.99/mo

  • 2 or more PCs simultaneously
  • Includes unlimited skills
  • Premium support discount
  • And much more

Experience the latest features and bug fixes weekly. A Pro subscription is required to use this edition.



  • Load and run any ARC project
  • Operates in read-only mode
  • Unlimited robot skills
  • Early access fixes & features

Have you finished programming your robot? Use this to run existing ARC projects for free*.

  • Minimum requirements are Windows 10 or higher with 2+gb ram and 500+MB free space.
  • Recommended requirements are Windows 10 or higher with 8+gb ram and 1000+MB free space.
  • ARC Free known-issues can be viewed by clicking here.
  • Get more information about each ARC edition by clicking here.
  • See what's new in the latest versions with Release notes.

Compare Editions

Feature ARC
  Get ARC for Free View Plans
Usage Personal
Premium support $14.99/ticket $9.99/ticket
Feature requests Yes
Early access to new features & fixes Yes
Simultaneous microcontroller connections* 1 255
Robot skills* 20 Unlimited
Skill Store plugins* 1 Unlimited
Cognitive services usage** 10/day 6,000/day
Auto-positions gait actions* 40 Unlimited
Speech recongition phrases* 10 Unlimited
Camera devices* 1 Unlimited
Vision resolution max 320x240 Unlimited
Interface builder* 2 Unlimited
Cloud project size 128 MB
Cloud project revision history Yes
Create Exosphere requests 50/month
Exosphere API access Contact Us
Volume license discounts Contact Us
  Get ARC for Free View Plans
* Per robot project
** 1,000 per cognitive type (vision recognition, speech recognition, face detection, sentiment, text recognition, emotion detection, azure text to speech)


Upgrade to ARC Pro

Synthiam ARC Pro is a new tool that will help unleash your creativity with programming robots in just seconds!


Not a complaint and I know it was not listed, but video recording still does not work.


Justin, it's being worked on:)


Thanks DJ for the fixes, especially the " in use elsewhere@ bug!



on this item

  • ControlCommand now takes $variable as parameter

can you expand on this? Does the variable have to be named $variable or can any variable be passed into the ControlCommand?

Also, does this variable have to include all of the text for the ControlCommand?

Which is correct?

ControlCommand("Soundboard v4", $variable) with $variable being set to "Track_0"

Or does it work like this

ControlCommand($variable) with $variable being set to the value of "Soundboard v4, Track_0"?

I cant seem to get the first one to work with a variable name of $SongID and the second one I haven't tried yet because it doesn't seem to me like this is what is intended.




It has to contain the command that it would expect. If it expects "Track_0", then you will need to have your $variable contain the text "Track_0"

A $variable stores information, such as numbers or words. They are used as placeholders for the actual information that is stored. This allows you to change the value of the $variable (placeholder) anywhere in the program and have that value used when ever the $variable is displayed.

The $variable does not need to be written as "$variable". It can be written as $x, $banana, or even $chicken.

As an example for your inquiry, you would provide text... such as:

$x = "Track_0"

ControlCommand("Soundboard", $x)

I have attached a sample project which demonstrates how to do what you are asking: aa0.EZB


Thanks DJ. It is as I expected. Opening your project now to see why mine isnt working.

Have a great day!


Your project worked great. I am tracking down why mine isnt working.

Thanks DJ


Im sorry about that. I had to put increase my sleep command a bit. It wasnt getting the variable set from the database before trying to run the ControlCommand("Soundboard v4", $SongID) command. DJ, I know you're busy. Sorry to waste your time on a silly issue, but thank for you help. It works great.


DJ, I am still getting the Sound Servo: Object In Use Elsewhere errors. I don't even need to be making sounds, just going to the virtual desktop (desktop 2) that has the sound servo object will start the errors. Also still getting the "Joystick Already in use" error, but I am not sure if you had tried to fix that one or not.

I un-installed, rebooted, and re-installed, but still seeing the errors.

If you think it might be project related, my project is on the cloud "myroli-mkii".

Let me know if you need any other information.



I'll look at your priject Alan