Note that some or all of the 1/8" holes in the top of the base may not be drilled all the way through. These are “blind holes” which mean they don’t go all the way through to the other side of the base platform (yet).
NOTE: If you are mounting a Board of Education Shield + Arduino as your control board, you will need to instead use the 1.25" standoffs provided in the Arlo Hardware Pack for the (4) holes closest to the front of the Arlo (top 4 standoffs in the picture below). The BOE Shield + Arduino requires more clearance than other boards and cannot be mounted on 5/8" standoffs.