esp8266 + 2n2222 transitor switching 12v LEDs. schematics right?

Projects General Guidance
21

Turning the transistor over, thus swapping emitter and collector does not change anything.....

22

Assuming the Base is in the middle...
This covers a bit re 2n222 & 2N222A
Sorry - It's been years since I used bipolar transistors in micro' circuits.

23

Thanks, I have read that page today :wink:

Little update, using GPIO 0 the esp won't boot either, however the blue led stays of.

24

How is it possible that R1 in my schematics is 220ohm and here this person is using 100k ohm :confused: :o

25

Dependin gon the base current - I always ended up with a value between 220 and 2K2
100K seems a bit high in these circumstances - and may not turn the transistoir on fully (=heat).

26

Well, it looks like the 2n2222 is missing up the boot sequence. Something with the GPIO2 pin pulled low, or high, too sleepy now wil have to check it out tomorrow

27

So this solved my problem. I installed a button that is normally closed between the base and the GPIO2 pin.

sketch-1551469988867.png
sketch-1551469988867.png1200×1200 118 KB

When booting I keep the button pressed, when booted I repeat the button and everything works as intended.

Thank you all for thinking along with me.