\documentclass[11pt]{article} %Gummi|065|=) \usepackage{graphicx} \usepackage{caption} \usepackage{xcolor} \usepackage[vcentering,dvips]{geometry} \geometry{papersize={6in,9in},total={4.5in,6.8in}} \title{\textbf{Door Alarm}} \author{Steak Electronics} \date{} \begin{document} \maketitle %\tableofcontents \textcolor{green!60!blue!70}{ \section{Attiny Solar Energy Harvest Tests}} I have the following: \begin{itemize} \item Solar panels \item Attiny 10 \end{itemize} To this list, I will add a supercap, and an energy harvesting IC. The goal being to load the super cap during the day, and to run 24/7. I will need an exceptionally low power micro. The super cap will need to be about 3.3V or 5V. \subsection{Micro Considerations} The Arduino Atmega328P is not an option. I'm looking to have a current draw of only 1mA max, (ideally 500uA) when active. Moteino is also not an option for this. Those are made for batteries. I want to be battery free. A super cap, however can be used to store energy. I'll get to that shortly. For micros, I have some Attiny10 on hand, and these have a reasonably low power pull in active mode. Let's build those up first. What will the micro do? No idea. I haven't a clue. \subsection{Energy Storage} I don't want a battery. Let's go with a super cap. The solar panels will only be active some of the time, so I will want to harvest energy with some kind of IC into the cap when the sun is out.\footnote{Reference: www.analog.com/media/en/technical-documentation/technical-articles/solarenergyharvesting.pdf is a start. I'll need to do more research.} \end{document}