https://github.com/tzapu/emontxserialgateway

ESP8266 emonTX Serial to EmonCMS gateway
https://github.com/tzapu/emontxserialgateway

Last synced: about 1 month ago
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ESP8266 emonTX Serial to EmonCMS gateway

• Host: GitHub
• URL: https://github.com/tzapu/emontxserialgateway
• Owner: tzapu
• License: mit
• Created: 2015-11-25T06:15:41.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2015-12-03T14:20:34.000Z (about 9 years ago)
• Last Synced: 2023-04-04T04:51:06.130Z (over 1 year ago)
• Language: Arduino
• Homepage: http://tzapu.com/2015/11/25/esp8266-emontx-serial-to-emoncms-mqtt-over-wifi/
• Size: 6.84 KB
• Stars: 9
• Watchers: 11
• Forks: 3
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# emonTXSerialGateway

ESP8266 emonTX Serial to EmonCMS gateway

## What is it

This is a small ESP8266 (Arduino IDE support) script that forwards the data it receives over Serial to EmonCMS.

Total cost should be something like $4, a lot less than a RaspberryPI gateway plus a RF module. On top of it all, I am programming my ESP8266 modules with the same IDE and language and programmer I am using for my emonTX, already had everything.

## What do you use it for

I use it to forward all my [emonTX v3](http://openenergymonitor.org/emon/modules/emonTxV3) readings to [EmonCMS](http://emoncms.org/) without needing to have a RaspberryPI gateway with a RMF12PI at all.

It is however not limited just to emonTX, any device that can output serial data could be made to work like this.

## Requirements

- ESP8266 module with separate power supply

  ESP-01 will do, schematic soon

- ground of ESP module must be connected to ground of sending device

- Serial baudrate to be the same on both sending device and ESP module

- Serial sending format to be

```

NODEID VALUE1 VALUE2 VALUE3 VALUE....

```

  This format is the format that most of the [emonTX sketches](https://github.com/openenergymonitor/emonTxFirmware/tree/master/emonTxV3) output. In some case you will need to enable debug, in others you will need just a small modification to the sketch to add NODEID or to remove extraneous text amongst values.

## Getting started

- download this sketch

- download all the libraries mentioned in the sketch and put them in your Arduino IDE's libraries folder

- get and add your emoncms.org write key to the sketch

- modify your emonTX sketch to print in the requiered format

- burn the sketch to your ESP module

- connect ground to ground and emonTX TX line to ESP RX line

  (on emonTX v3.4 the TX line is labeled RX as on the programmer, connect to RX)

- start them up

- if you included the WiFiManager library it will start an access point for you to easily configure which access point the ESP will connect to

- after it restarts you should start seeing data in your EmonCMS account

#### TODO

- add MQTT support

- more error checking

- ... ideas, pull requests, issue reports are all welcome :)