ESP8266 Community Forum

- Wed Aug 19, 2020 6:54 pm #88388 This link is pure gold, thanks! I was able to get down to below one second for connecting to WiFi!!

However, my ESP doesn't wanna wake up anymore. I guess it's an issue of my setup here, not a code issue. I*m getting a better step up/down converter the next days, that allows me to better send a 3V3 signal. Will test it again with that and post again

But right now: That's awesome, thx!!

- Sat Aug 22, 2020 5:20 pm #88428 So, I was testing again a bit, even without having a proper step down shifter. But I just used the resistor method again and I still struggle to wake up the ESP on the EN pin. It worked before, but I realized I was sending it a 5V signal, I had a mistake with my resistor setup... So one would think I killed the ESP, but the ESP works.

The only thing I can't get working is waking it up... I've attached my very simple circuit diagram. Can you spot any misconfiguration? May I have damaged the EN PIN?
And yes: I used a multimeter to actually verify that I have 3.3V there

Thank you very much!

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- Sun Aug 23, 2020 4:02 pm #88441 EN as shown is connected to the bottom 10K resistor which is 1.66V not 3.4V. That is not high enough to wake up the ESP8266.

Connecting to the top of the middle 10K resistor should be at the appropriate voltage.

Edit. The EN shouldn't be left floating either (switch open). If should have a high value pull down if connected like this (e.g. 100K). That could be why you don't get a wake as it will stay floating high for a while whereas it needs to go to 0V before the wake up signal goes to 3.3V

- Sun Aug 23, 2020 4:42 pm #88442

EN as shown is connected to the bottom 10K resistor which is 1.66V not 3.4V. That is not high enough to wake up the ESP8266.

Connecting to the top of the middle 10K resistor should be at the appropriate voltage.

Oh, yeah. Sorry. I was too stupid to use a multimeter But as you saidy this still doesn:t work:

Edit. The EN shouldn't be left floating either (switch open). If should have a high value pull down if connected like this (e.g. 100K). That could be why you don't get a wake as it will stay floating high for a while whereas it needs to go to 0V before the wake up signal goes to 3.3V

Hrm, I have to admit I don't understand that :/
The switch I've drawn there is a button to fake the signal, so the esp gets the 3V3 for a piece of a second: https://www.berrybase.de/bauelemente/sc ... lie-223-er

You say I can't have it open like that? I'm really sorry that I'm such a noob in this