Totally new to this. Tried googling and watching some youtube videos but can't seem to find anything that can related to my case. Do let me know if I'm doing something wrong.

I bought my module from Here

I used an apple adapter (output of 5v 1A) and a stripped an old usb cable and connected the red wire to the +IN and black(gnd) wire to the -IN and turned it on. Then relay then started making the switching on/off sounds and the LED(red in color) started flashing on and off constantly to the extent it is vibrating.

I panicked and turned it off.

Tried on my Arduino Uno but this time plugging into the 3.3v. No sounds seems ok, configured the ESP8266 using arduino IDE and connected to the IP address using EasyTCP and set up a switch function with HEX code:

A0 01 01 A2 and A0 01 00 A1 respectively.

Toggled it and saw the TX signal on my Arduino Uno flash and got a response on my serial monitor (but gibberish symbols) but no response on the relay no LED.

Please assist, what am I doing wrong here?

And is stripping my wire a good idea? I heard that 5V and 1A might kill.

  • \$\begingroup\$ Wire colors in USB cables are not actually standard in practice. Some Arduino's 3v3 rails do not have sufficient current capability to reliably run an ESP8256. Ultimately your question will be hard to answer except by guessing as you have provided no reliable technical information about the components or how you used them. \$\endgroup\$ – Chris Stratton Dec 26 '18 at 18:00
  • \$\begingroup\$ ESP8266! - Any additional information that you think i should provide? I can try to provide whatever is necessary \$\endgroup\$ – Eric Lim Dec 26 '18 at 18:04
  • \$\begingroup\$ It is very difficult to hurt yourself with 5V. Somebody might manage it, but it would either be deliberately or else through a very stupid accident. \$\endgroup\$ – JRE Dec 26 '18 at 18:51
  • \$\begingroup\$ thank you! thats actually good to hear LOL. In regards to the question, any tips? \$\endgroup\$ – Eric Lim Dec 26 '18 at 19:30

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