Here's a description of all the components- https://www.crowdsupply.com/img/1238/pa-parts_png_project-body.jpg https://www.crowdsupply.com/img/1238/pa-parts_pn

Here's a description of all the components- https://www.crowdsupply.com/img/1238/pa-parts_png_project-body.jpg https://www.crowdsupply.com/img/1238/pa-parts_png_project-bo... https://github.com/tinkrmind/programmable-air/blob/master/README.md https://github.com/tinkrmind/programmable-air/blob/master/RE... ^ also has some other pneumatic components that didn't make it into the kit.