Laser Safety Classifications

A Smorgasbord of Acronyms There are ANSI, OSHA, FDA (CDRH), NRPB, and military standards. The CDRH (Center for Devices and Radiological Health is part of the Food and Drug Administration and is the most relevant regulatory organization in the USA for commercial and scientific lasers. The complete CDRH document may

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Nanoptix “Spill-Proof” Thermal Receipt Printer

I have yet another receipt printer, this one appears to be brand new. It’s possibly the smallest thermal 80mm printer I have at the moment, and has both USB & Serial interfaces. There’s not much to these printers at all. Removing a single screw allows the case halves to separate,

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