Sandu UVC

During the COVID-19 pandemic, it became even more apparent how crucial sterile materials are to protect people in medical environments. To make these more widely available, Frolic Studio designed a decontamination box that sterilizes personal protective equipment using UVC light.

Demonstration of the device

PCBs and moulded plastic ready for assembly

The final product


The box was designed with the following goals in mind:

  • Low material cost to make it widely available

  • The box should be semi-locally produced

To realize these goals, the box is made out of two vacuum-formed parts that can be produced locally. The electronics can be shipped fully assembled and are designed to be fully analog, eliminating the need for a microcontroller to be programmed, and thus, no computer is required on-site.

My responsibilities

For this project, I designed the electronics. The main challenge was to create a full-state machine without using a microcontroller. The solution was found in an analog oscillator for the exposure timer and a few flip-flops made with discrete components to minimize cost. The result was a highly efficient schematic with a minimal component count.

The Sandu UVC in use in Uganda

Photograpy by Frolic Studio

© 2023 Pim Swinkels Creative Engineering

kvk: 76080080

BTW: NL003035556B22

© 2023 Pim Swinkels Creative Engineering

kvk: 76080080

BTW: NL003035556B22