btidey wrote:davydnorris wrote:Several things have made me rethink using the buck/boost:
- the ESP chip will actually operate at lower than 3.3V. I've heard people using as low as 2.8V to power them successfully. Most of my sensors are already using 1.8V and the ones that aren't can also operate with 3.0V or less
Just to add to that experience. I was recently checking out the battery state on a door sensor which sends out internet notifications. That had been running fine for over 12 months on a 400mA LIPO using a LDO (xc6203). I was surprised to find the battery down to 2.8V, well into final exhaustion state, but it was still operational. With the drop out the ESP would have been on about 2.6V.
The regulator (xc6203) was giving way to how much? 3.3v?
With 2.6v at the entrance?
Tell us more how your application works !!
I am impressed with the weather!