EspNow Managed flooding mesh network

Description

Managed flooding mesh library for Esp32/Esp2866/Esp01 with mqtt. The library works on EspNow broadcast.
Project includes:
* Mesh usb adapter codes (for esp32/esp2866).
* Mesh gateway codes (Convert messages between mesh network and MQTT broker)
* Slave node example codes (Slave node can read sensors, control switches/lights or something else)

Details

Includes:

Mesh usb adapter codes (for esp32/esp2866).
Mesh gateway codes (Convert messages between mesh network and MQTT broker)
Slave node example codes (Slave node can read sensors, control switches/lights or something else)

Features:

Works on EspNow broadcast
Nearly instant connection after poweron
Maximum number of slave nodes: unlimited
Flooding mesh support
a message cache. If a received packet is already found in the cache --> it will not be retransmitted or handled again
Mesh nodes use MQTT service (subscribe/publish)
Master node (USBAdapter=ESP32 or ESP2866) is connected to RaspberryPi's USB port
Each Nodes can communicate with each other
ESP32, ESP2866, ESP01
Ping about 40-60ms
ttl support
Battery node support
AES128
Retransmission support
Request/Reply support
Send and pray support (Send a message to all nodes without reply/ack)
Easy to configure (just set channel, secure keys and bsid)
Simple mqqt interface. All nodes can use mqtt services via master node (subsribe,unsubscribe,publish,get).
MQTT local cache on raspberry
Arduino

____________________________________
(                                    )
|                                    |
(            Internet                )
|                                    |
(____________________________________)
                     ^
                     |MQTT
                     |
+--------------------|-------+
| RaspberryPi        V       |
|-------------+   +--+-------|
| MeshGateway |<->| MQTT     |     +-------------------------------------+
|             |   | broker   |     |    ESPNOW mesh network              |
+-----+-------+---+----------+     |                             Node6   |
      ^                            |     Node1        Node3              |
      |    USB(SerialData)         |  +------------+   Node3     Node5   |
      +------------------------------>| USBAdapter |           Node4     |
                                   |  | (Master)   |  NodeX    Node7     |
                                   |  +------------+                     |
                                   +-------------------------------------+

Flooding mesh network

In this network example ttl must be >= 5

               SlaveNode
                   |
                   |         Message from master to BatteryNode
                   |   ---------------------------+
                   | ttl=5               ttl=4    |
SlaveNode-------MasterNode-------------SlaveNode  |
                   |                     |        |
                   |                     |        |
                   |                     |        |
                   |                     |        |
               SlaveNode                 |        |
                   |                     |        |
                   |                     |        |
                   |                     |        +------------------------------------------------>
                   |                     | ttl=3         ttl=2              ttl=1
SlaveNode-------SlaveNode-------------SlaveNode-------SlaveNode-------------SlaveNode---------BatteryNode
   |               |                     |
   |               |                     |
   |               |                     |
   |               |                     |
   +-----------SlaveNode-----------------+

Message relay

The Master sends a request to the farthest node and the farthest node replies.

Arduino libraries (dependencies):

Slave Node examples

PIR-sensor node: https://github.com/arttupii/PirSensorNode
Relay switch node: https://github.com/arttupii/mesh-relay
Temperature sensor node: https://github.com/arttupii/mesh-dallas

Early demo video

https://youtu.be/tXgNWhqPE14

Mesh usb adapter

Esp32/Esp2866
https://github.com/arttupii/EspNowUsb/tree/master/EspNowUsb

Mesh slave node codes

Esp32/Esp2866/Esp-01
https://github.com/arttupii/EspNowUsb/tree/master/arduinoSlaveNode/main

MeshGateway software for RaspberryPi (conversation between mesh and mqtt broker)

https://github.com/arttupii/EspNowFloodingMesh/tree/master/gateway

Slave node code example

Slave node updates the button's state to topic device1/switch/led/value. The led state can be controlled with topic device1/switch/led/set on/off.

#include <EspNowFloodingMesh.h>
#include<SimpleMqtt.h>

/********NODE SETUP********/
#define ESP_NOW_CHANNEL 1
const char deviceName[] = "device1";
unsigned char secredKey[16] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF};
unsigned char iv[16] = {0xb2, 0x4b, 0xf2, 0xf7, 0x7a, 0xc5, 0xec, 0x0c, 0x5e, 0x1f, 0x4d, 0xc1, 0xae, 0x46, 0x5e, 0x75};
const int ttl = 3;
const int bsid = 0x112233;
/*****************************/...

Components

1 × RaspberryPi

1 × ESP32 (as usb adapter to mesh network)

1 × ESP01 mesh node device

1 × ESP2866 mesh node device

Build Instructions

Collapse

Step 1

Installation

1. Install Arduino and following dependencies:

2. Install esp8266 dev module. Use git version.

Instructions: https://github.com/esp8266/Arduino

3. Check Espressif FW version!!!. It should be nonos-sdk 2.2.1+100(testing).

4. Add "https://dl.espressif.com/dl/package_esp32_dev_index.json" into the Additional Board Manager URLs field.

5. Install esp32 dev module 1.0.3-rc1 from Arduino's Boards Manager.

6. Flash Usb adapter software (EspNowUsb/EspNowUsb.ino) on esp32/esp2866 (esp32 is the best choice.). (You don't need to change any parameters)

https://github.com/arttupii/EspNowFloodingMesh/tree/master/EspNowUsb

7. Install mqtt broker, nodejs and npm on RaspberryPi

      curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash - 
      sudo apt-get install mosquitto nodejs npm

8. Get gateway and install npm modules

https://github.com/arttupii/EspNowFloodingMesh/tree/master/gateway

      git clone git@github.com:arttupii/EspNowFloodingMesh.git
      cd EspNowFloodingMesh
      cd gateway
      npm install

9, Modify gateway/config.js file:

set secredKey parameter (16 bytes)
set initializationVector parameter (16 bytes).
set bsid

10. Start gateway software on RaspberryPi. .

      a@labra:~/git/EspNowUsb/gateway/node index.js
      begin /dev/ttyUSB0 115200
      Subscribe topic device1/led/value from cache
      Subscribe topic device1/led/set from cache
      reboot
      Role MASTER, ttl=3
      MAC GET
      InitializationVector [178,75,242,247,122,197,236,12,94,31,77,193,174,70,94,117]
      key [0,17,34,51,68,85,102,119,136,153,170,187,204,221,238,255]
      Channel 1;
      Init
      RTC 1563876153

11. Open slave node code (arduinoSlaveNode/main/main.ino) and modify deviceName, secredKey, iv and ESP_NOW_CHANNEL paramaters.

https://github.com/arttupii/EspNowFloodingMesh/tree/master/arduinoSlaveNode/main
deviceName should be unique
secredKey, iv, bsid and ESP_NOW_CHANNEL must be match to config.js file on raspberryPi. Otherwise mesh network won't work. --> Flash slave node

Discussions

Ale o co chodzi wrote 12/17/2023 at 15:54

add any messenger

tox, matrix, jabber etc.

Are you sure? yes | no

vidax wrote 09/13/2019 at 10:05

This is great stuff. I started the project and will let you know how it goes.

Are you sure? yes | no

EspNow Managed flooding mesh network

Become a Hackaday.io member

Just one more thing

Description

Details

Features:

Flooding mesh network

Message relay

Arduino libraries (dependencies):

Slave Node examples

Early demo video

Mesh usb adapter

Mesh slave node codes

MeshGateway software for RaspberryPi (conversation between mesh and mqtt broker)

Slave node code example

Components

Build Instructions Collapse

Installation

Enjoy this project?

Discussions

Become a Hackaday.io Member

Does this project spark your interest?

Report project as inappropriate

Send message

Remove Member

Build Instructions

Collapse