Internet smart reset plug

Smart plug that cycle power to your router when net is down

Grégory Paul

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Description

Sometimes, when your internet is down, it may be your router (or Freebox in France) which has gone crazy. A power cycle sometimes fixes the issue.
The idea is to DIY a reset plug : http://resetplug.com/

The idea here is to use an ESP8266 which pings a website. When ping fails, the ESP8266 uses a relay to power cycle a plug.

Components

1 × ESP8266 The microcontrolle with wifi capacity
1 × AMS1117-3.3V Mini USB 5V/3.3V DC Precise Power Supply Module to get 3.3 and 5 volts from an USB charger - http://www.ebay.com/itm/351691736361
1 × 1-Channel Relay Module Optocoupler 5V High Level Trigger Expansion Board Arduino to control the plug - http://www.ebay.com/itm/131780694298
1 × 5V 3.3V FT232RL USB To Serial 232 Adapter Download Cable Module For Arduino A serial adapter to flash the ESP8266 - http://www.ebay.com/itm/161305918505
1 × a plug socket

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Project Logs

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Project completed
Grégory Paul • 07/11/2016 at 16:42 • 0 comments

The box is a little bit too small but otherwise, the electronic+code part is completed.
Cannot deepSleep so wait...
Grégory Paul • 07/10/2016 at 18:04 • 0 comments

I wasn’t able to make my esp8266 sleep (https://github.com/paulgreg/internet-smart-plug/tree/deepsleep)... So I disable the wifi and made it wait (https://github.com/paulgreg/internet-smart-plug/tree/master).
It works but the case is too small and won’t fit.
I’ll upgrade to a bigger box.
Flash esp8266 with Arduino IDE
Grégory Paul • 06/09/2016 at 20:43 • 0 comments

As tweeted here, I made some progress and was able to flash some code to my esp8266.
I’ve followed the mapping explained on https://github.com/esp8266/Arduino/blob/master/doc/boards.md and flash that one https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266WiFi/examples/WiFiClient/WiFiClient.ino
Works great. :-)

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Build Instructions

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1

Step 1

Install requirement
Install Arduino IDE and install esp8266 additional board manager as explained here.
2

Step 2

Flash code
Following the minimal hardware setup for bootloading explaining here and using a 3.3V USB To Serial adapter, you should be able to flash the following code to your esp8266 : https://github.com/paulgreg/internet-smart-plug
Please note that USB serial adapater ground need to be connected to ESP8266’s power adapter ground.
You’ll need to copy/paste parameters.h.dist to parameters.h and change your configuration information.

Beware, esp8266 don’t support 5V so be sure to use a power supply and an USB serial adapter which operates at 3.3V !
Doing otherwise will simply destroy your module.
3
Step 3
Run the code
To test your code, you’ll need to
- disconnect the RST / reset pin
- connect GPIO0 to pullup (instead of GND) as explained here,
- connect GPIO16 (or XPD) to RST pin to allow deepsleep as explained here.
Opening the serial monitor from arduino, you should be able to view some messages from esp8266.