Hi there, i found this code on internet..when i upload it (through CH340) on esp-01 and then put esp-01 on ESP8266 then in adafruit with ON/OFF i can turn on/off only led on esp-01 but relay's LED is constantly blue and no reaction...where is the problem? thanks /*********************************…

Well, it appears to half work if the esp8266 builtin led responds as required. Show your wiring diagram. The problem could also be there.

i am using CH340 to transfer code on esp-01 and then put it back on esp8266 i found on net other codes where is #define relay D2 instead #define relay 2 like it is in my code but when i put D2 in line a got error 'D2' was not declared in this scope do not know where is the problem

If the original code compiled and the led functioned as expected, then leave the code alone. You have already been asked to show a wiring diagram. Even an picture of a hand drawn diagram is OK.

wiring diagram is 5v on input and nothing else...esp-01 goes on esp8266 for programming using CH340 thats it...no arduino uno or any other board

neznamnista: wiring diagram is 5v on input and nothing else...esp-01 goes on esp8266 for programming using CH340 thats it...no arduino uno or any other board Didn't you mention previously a relay ?

yes esp8266 relay with 1ch + esp-01 + CH 340

You have to be much clearer about the hardware components you are using. Include a wiring diagram (schematic) and links to the main parts. You have not made it clear how the relay (module) is connected to the esp01 or power supply.

OK. It is a combined module consisting of an ESP01, a relay, a relay driver (transistor) and a voltage regulator similar to this: https://www.ebay.de/itm/ESP-01-01S-WIFI-WLAN-Relais-Board-Erweiterung-Shield-Arduino-ESP8266/253998592986 [relayesp01.jpg] It appears your sketch assumes GPIO2 is the…

yes 5 volts input then i used this code to try if relay is working and yes, its working, but dont know how to control it through Adafruit #include <ESP8266WiFi.h> const char* ssid = "YOUR SSID"; // fill in here your router or wifi SSID const char* password = "YOUR PASSWORD"; // fill in here your…

ESP8266 relay (one) on Adafruit

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neznamnista January 15, 2020, 9:00am 9

and now just for @6v6gt who doesn't understand what i am talking about

pictures of devices i have

1st picture esp8266 relay 1ch with esp-01

2nd picture ch 340 usb programmer

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ESP8266 relay (one) on Adafruit

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