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ESP8266 with relays
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Gabriel:
Hi all,

I have created this schematic for an esp8266 and a relay. I was wondering if I have got everything that I should and if I have overlooked anything.
It is a relatively simple circuit I just wanted a second pair of eyes to look at it before I send it off to be made.

I have also created a PCB, it is my first one that I will actually send off to be made so fingers crossed...

Many Thanks,
Gabriel
IconicPCB:
Gabriel,

Make Q1  SMD .
Shift Q1 and the capacitor from top side to solder side.
saike:
If there is a connection from the voltage regulator output to the rest of the circuit, I can't see it
Gabriel:

--- Quote from: IconicPCB on December 26, 2018, 07:19:05 am ---Gabriel,

Make Q1  SMD .
Shift Q1 and the capacitor from top side to solder side.

--- End quote ---

Ok, thanks for the tip. Any suggestions on what transistor to use instead of the 2n2222?


--- Quote from: saike on December 26, 2018, 07:26:00 am ---If there is a connection from the voltage regulator output to the rest of the circuit, I can't see it

--- End quote ---

You are right, god I'm dumb...
semir-t:
You should put flyback diode between E and C of transistor or parallel to relay.

link about flybackdiode and why we use it: https://en.wikipedia.org/wiki/Flyback_diode

more info: https://electronics.stackexchange.com/questions/93452/correct-use-of-flyback-or-snubber-diode-across-motor-or-transistor
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