PCB drill with an USB microscope as visual aid
![](https://embedded-lab.com/blog/wp-content/uploads/2014/10/PCBdrill-544x280.jpg)
Single-sided PCBs are relatively easier to homebrew. Holes for PTH components can be drilled with a reasonable accuracy without any sort of visual aid. However, if you want to make double-sided PCBs with strict drilling requirements, eyeballing might not be enough to drill holes at precise locations. This Instructable is about making a USB microscope guided PCB drill to achieve better accuracy in drilling holes in PCBs. Unlike regular drills, this machine drills holes from bottom to top.