Page 3 of 11
Re: Best practices pin connections on esp8266-01 and -12
Posted:
Wed Jun 03, 2015 5:39 pmby Mikejstb
I'm kind of an old-timer. I cut my tech teeth on ham radio tube circuits back in the early 1960's.
Back when working on projects could kill you - LOL!
My dumb question is this "is a 100nf cap what we used to call a .001uf cap?"
In other words, does the "nf" put the value "backwards" to the right of the decimal place? 100 -> .001?
Re: Best practices pin connections on esp8266-01 and -12
Posted:
Wed Jun 03, 2015 6:36 pmby GeorgeIoak
No, 100nF = 0.1uF but usually the bypass caps are designed into the circuit on the board so as a user you should only add the reservoir cap which helps reduce sag on the Vcc line.
Don't worry, I'm not that far in age behind you!
Re: Best practices pin connections on esp8266-01 and -12
Posted:
Wed Jun 03, 2015 7:44 pmby Mikejstb
Thanks!
Re: Best practices pin connections on esp8266-01 and -12
Posted:
Thu Jun 04, 2015 12:13 pmby Lotus
It is still unclear to me whether the reset and chip power down pins have internal pullup and pulldown resistors respectively? Things seem to work fine tying CH_PD directly to Vcc and leaving the reset pin floating.
Also, what is the deal with GPIO-15, it has to be pulled down on startup but can then be used as a GPIO? Can I also assume that this pull-down can be done with a direct connection to ground?