Energy & Sustainability Technology
Build an inexpensive cave surveying apparatus

Here’s a how-to on building the “Auriga”, a portable electronic sensor box and cave surveying instrument with an electronic compass and serial output that can be cataloged using a computer or PDA. This particular build uses an old Palm PDA to collect the data. Check out the link below for parts list and details on how to build this device.

How to build an electronic cave surveying instrument