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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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