Unfortunately, Scratch broke the code for all these models when they upgraded to Scratch 3 - they just deleted all the WeDo blocks - so unless Scratch implement a fix none of these projects will work.

This is my 100% unofficial code for the 12 robots that can be built with the Lego WeDo base set.

The building instructions for all the models can be found here:

https://education.lego.com/en-us/lesi/support/product-support/wedo/wedo-base-set-9580/building-instructions