elac/esp8266-wifi-relay-module

ESP8266 WiFi Relay Module sketch

ESP8266-WiFi-Relay-Module

ESP8266 WiFi Relay Module sketch
Upload to module using the Arduino IDE The sketch is currently set for AP mode

esp8266-wifi-relay-module's Issues

Relay won't turn on

plz help me everything is working fine but the relay is not turning on or off plz reply fast

Question about Amazon Post

Elac - found your post on Amazon. Want to do something similar, but having some trouble understanding your procedure, mainly about getting it into flashing mode. Any chance you could connect with me via email?
cgmckeever at gmail --- appreciate it

By Elac on January 2, 2018
This is a great module for a quick easy way to control a device through WiFi. If you love making your own WiFi projects and need to control some power then this module is for you (and me).
Out of the box it runs fine with the EasyTCP app on Play Store. Just takes a few minutes to set up and your ready to control something. Easy to follow instructions can be found here: hackster.io/makerrelay/esp8266-wifi-5v-1-channel-relay-delay-module-iot-smart-home-e8a437 .
BUT where this module really shines is in the ability to flash your own program on the ESP-01 using the Arduino IDE. Then you can access this module from any browser through a simple web address 192.168.4.1(YAY!!!). Giving lots of possibilities for a project.
The relay is controlled by a secondary chip on the module which is sent instructions(in hex format) from the ESP-01 through the TX /RX lines. This also gives you the ability to still use the IO2 pin for your project. To program the ESP-01 with the Arduino IDE you need to have a wire attached from the ESP-01 IO0 pin to common ground to enter flashing mode. I soldered a header pin on the top of the ESP-01 for easy access and also soldered a 90 degree angled header pin on the ground pin of the serial connection pins. Add a jumper wire and connect a USB to TTL module to RX, TX & GND pins of ESP8266 relay module. Then power up the module and you can flash your program through the Arduino IDE.
I put together a simple sketch for this module you can grab it on GitHub search ESP8266-WiFi-Relay-Module it's listed under my name.
I've also attached some photos. see less