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This article is about STM32U0 battery less demo. It provides explanations on how the demo works, and describes step-by-step how to reproduce it.
1. Purpose of the demo
The goal of this demo is to illustrate the STM32U0 best-in class ultra-low power capabilities. It is running without battery thanks to Dracula technologies inkjet Printed Organic Photovoltaic module, which harvests energy for the STM32U0 MCU. This is a luxmeter and thermometer demo with data being displayed on an LCD segment display, and the possibility to send data thanks to a radiofrequency module. The demo can also work standalone without RF module. So, the demo exists in 2 versions without, referred as standalone version, and with the RF module, referred as RF version in this document.