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| .. | ||
| cust_footprints.pretty | ||
| Gerbers | ||
| Altoids-PowerSupply-cache.bck | ||
| Altoids-PowerSupply-cache.dcm | ||
| Altoids-PowerSupply-cache.lib | ||
| Altoids-PowerSupply.kicad_pcb | ||
| Altoids-PowerSupply.net | ||
| Altoids-PowerSupply.pro | ||
| Altoids-PowerSupply.sch | ||
| fp-lib-table | ||
| README.md | ||
Altoids Power Supply README
Intro
I saw a tin of altoids at the grocery store the other day. I decided that if I was going to get into electronics I better do at least one project using an altoids tin. Also I really don't have a good power supply (an atx supply with a mess of wires doesn't count), so I figured I'd make a portable power supply with some common voltage rails.
Thus, this project was born.
Main Goals
Battery powered PSU with common voltage rails (for me at least).
Must have features:
- 5v rail.
- 3v3 rail.
- Battery and a way to convienently charge it (USB)
Wants:
- 12V rail. (I don't know why)
- 5V USB output (as a phone charger)
I also wanted to learn about switch mode power supplies, so I used two MC34063s, one for the 5V and one for the 12V. (EEVBlog's tutorial was INCREDIBLY useful). 3v3 works better as a linear supply because you don't have to drop too much voltage.
Li-ion charging is also a new thing for me, so this will be a learning curve.
That's really it, most of the specific relevant information is on the schematic. I haven't finished the layout yet, but that's coming soon.