Anti errors blocks

[cparrapa]

Improvement suggested by @radzikowski

"you can very easily make a not compile program in Arduino because someone can forget to add some other connected/config blocks."

for example in your blockly you can crash some things, look at your blockly I grab some random blocks and look at your program:

You don't have defined AL, AR, lcd, also variable soft_delay does not exist, so it will not work on arduino as a correct program. It will crash.

The same happened with otto ninja from a basic user perspective, you don't have inited myseroLeftLeg etc. - so it not working :)