The folder Primeiros contains projects that are newer or more complete. Segundos contains other projects. Some have already been published and are listed below.
Some unpublished projects are not finished, but I've kept them as a record, perhaps to revisit later with better knowledge and resources. The plan is to reorganize all the relevant bits in a website someday.
I'm Brazilian, so most instructions of unpublished stuff will be in Portuguese. Portuguese is a beautiful and rich language, give it a shot if you have the chance.
These projects may involve Class IV lasers and/or High Voltage. Always use adequate protection equipment. You are legally responsible for any use of the information in this repository, and any injury resulting from its use.