Hey guys, I am working on an Arduino project, I have bread boarded the basics and have it all running. I now want to try to take it to the next level and make a custom board for it, as with many things it needs to be as small as possible.
The project is a airsoft gun chronograph (I know, never been done! ) I have some questions about the whole thing.. so here we go!
First the easy ones.
- Does an arduino need to have the reset switch? I dont think it does, but just want to make sure.
- Is the bare minimum the atmega chip and the crystal with 2 capacitors?
now the more in depth
I want it to have a usb port for charging. I was planning on using a MCP73831 to do this with one cell. The question then comes in, will this affect the timing calculations since the arduino will be running at less than 5V? Does that affect what the millis() returns?
would I be better off using 2 cells and a voltage regulator circuit also to get a steady 5v?
Thanks for your time!