Re: Proper connection RST-GPIO16 for deepsleep in NodeMCU?
Posted: Wed Jul 18, 2018 6:15 amYou are using a NodeMCU so there is a reset button and so the hazard does exist if you ever press the reset button while in sleep. For simpler modules like the ESP-12 then there is no built in reset button.
My preference would be to use a schottky diode to keep the voltage drop low when the GPIO16 pulls the reset line. There is no significant current so something like a BAT-85. A conventional like a 1N4148 diode should also work OK, but some say this might be marginal.
The NodeMCU does have an on board connection for deep sleep via a resistor but I think this is best ignored.
See https://github.com/universam1/iSpindel/issues/59
My preference would be to use a schottky diode to keep the voltage drop low when the GPIO16 pulls the reset line. There is no significant current so something like a BAT-85. A conventional like a 1N4148 diode should also work OK, but some say this might be marginal.
The NodeMCU does have an on board connection for deep sleep via a resistor but I think this is best ignored.
See https://github.com/universam1/iSpindel/issues/59