So, I finally hooked up my device together to run a portable thermostat. Sadly after hooking up the buck converter and verifying the unit was putting out 3.3v it was not. I think I may have gotten a fault Buck converter from Adafruit. So one of the thing’s I was having issues with was the amount of time I would get out of the Lipo battery from the LM3671. After reviewing my options and reading I stumbled upon the Pololu 3.3v buck and it seems more promising. Sadly THEY ARE STILL AROUND $4-$5 a pop! That seems insanely high for some reason. Well, they’re in the mail so once I get ’em, I’ll hook it up to the power supply and Multimeter to see what the results look like.
Pololu 3.3V Step-Up/Step-Down Voltage Regulator S7V8F3
LM3671 3.3V Buck Converter Breakout – 3.3V Output 600mA Max