[Sugar-devel] Sugar and Scratch 3.0 online

James Cameron quozl at laptop.org
Mon Jan 7 20:24:32 EST 2019

Scratch 3.0 was released [1].

It works fine online using Sugar 0.112 and Browse 202, on Fedora 29
and Ubuntu 18.04, on virtual machines and hardware.

Blocks can be assembled into programs which then run.  Animation
and sound also works.

While on screen but not being used, the editor has an event loop which
consumes CPU cycles.  Faster CPUs consume less power.  An OLPC NL3
with quad-core N2940 CPU at 1.83 GHz is 65% busy.

The editor does need memory; a virtual machine with 1 GB of RAM causes
WebKit log reports due to memory pressure, but with 2 GB of RAM there
are no such reports.

Scratch 3.0 is not available for offline use on Linux yet [2].

On the OLPC XO-4, Scratch 3.0 does not start, as it requires features
that are not available in the older WebKit browser.  I don't expect
this to change.


1.  https://scratch.mit.edu/
2.  https://scratch.mit.edu/download

James Cameron

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