IoT-Tools project

3.1. Setup Arduino IDE for ESP8266

Follow this guide to setup ESP8266 board in Arduino IDE

Documentation is here

3.1.1. Procedure

Import ESP Board into Arduino IDE

Add https://arduino.esp8266.com/stable/package_esp8266com_index.json to libraries.

Import ESP Boards

Load the Libraries for ESP8266

Load ESP libraries

Load sample hello app into NodeMCU

In Arduino IDE, select proper board, example:
- Tools/Cards/NodeMCU 1.0 board
- CPU 160 MHz
- <correct USB device>

Create sketch such as the ESP8266 LED

void setup() {
  // initialize digital pin 2 as an output.
  pinMode(2, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(2, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(2, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
}

LED should blink as shown below:

NodeMCU Blink

Control a Wifi LED
Upload sketch found at ESP8266 LED WIFI with changing Wifi network settings
Open Serial Consoleon Arduino IDE
Ensure from logs that NodeMCU connected to local Wifi
Browse to IP address logged out
Click on button to switch led On and Off

NodeMCU Blink Wifi

3.1.2. File System

See SPIFFS filesystem

3.2. Setup Arduino IDE for ESP32

This is very similar to ESP8266 setup.

3.2.1. Hardware

These work good:

Lolin 32S
Wemos 32 (clone of Wemos D1 Mini but with ESP32 instead of ESP8266)
Board details
TTGO (the one which has a camera)

3.2.2. Procedure

Import ESP32 Board into Arduino IDE by adding URL into Settings:
```
https://dl.espressif.com/dl/package_esp32_index.json
```
Load the Libraries for ESP32 from panel Board Manager.
Load sample hello app into NodeMCU-32S

In Arduino IDE, select proper board, example:
- Tools/Cards/NodeMCU 32S board
- <correct USB device>

Create sketch such as the ESP8266 LED

void setup() {
  // initialize digital pin 2 as an output.
  pinMode(2, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(2, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(2, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
}

LED should blink as shown below:

NodeMCU Blink

3.2.3. Resources

Ubuntu setup

3.3. Softwares

3.3.1. Fritzing

Super easy for integration of boards with sensors and few basic components.
Allows to layout breadboard, with colored wires, that one can understand and follow, prior to create schematic and PCB for printing.

3.3.2. Kicad

KiCad is advanced, although not as complex to catch as professional tools.

KiCad documentation

3.3.3. Arduino IDE

Arduino IDE setup is described at Setup Arduino IDE

3.4. Tips - Low-power

3.4.1. Info

On Deek-Robot board:

Cut the power led
!!! Do not cut the regulator !!! On deek-robot board, need to unsolder the regulator Vout instead

Links:

3.4.2. Measures

Below are measures for:

cheap e-Bay arduino 3.3v clone (deek-robot)
radio RFM69 wired
using Jeelab libs. Enhanced sleep.
various sensors

Table 1. Measures
What?	Measure	Diff	Comments
Arduino + RFM69	5.1 uA	NA	Deek Robot with cuting led and regulator
+ DHT22	17.2 uA	+12uA
+ HTU21D	12.8 uA	+8uA
+ DS12B20	21.9 uA	+17uA
+ LDR	26 uA	+21uA	Using 200k as pull-down
+ TSL2561	17.4 uA	+12uA
+ Soil	5.2 uA	+0.1uA	Soil 2 - simple probes with 10k resistor pull-up
+ Toggle	5.2 uA	+0.1uA	Toggle with 10M pull-up resistor!

3.5. Radio - Bluetooth

3.6. Radio - CAN bus

3.6.1. Code

#include <SPI.h>
#include "mcp_can.h"

INT32U canId = 0x000;

unsigned char len = 0;
unsigned char buf[8];
char str[20];

void setup()
{
    Serial.begin(38400);

START_INIT:

    if(CAN_OK == CAN.begin(CAN_125KBPS))
    {
        Serial.println("Initialized successfully");
    }
    else
    {
        Serial.println("Initializing is failed");
        Serial.println("Reloading...");
        delay(100);
        goto START_INIT;
    }
}


void loop()
{
    if(CAN_MSGAVAIL == CAN.checkReceive())
    {
        CAN.readMsgBuf(&len, buf);
        canId = CAN.getCanId();
        Serial.print("<");Serial.print(canId);Serial.print(",");
        for(int i = 0; i<len; i++)
        {
            Serial.print(buf[i]);Serial.print(",");
        }
        Serial.print(">");
        Serial.println();
    }
}

3.6.2. Resources

3.7. Radio - I2C Connections

This is common pattern for communications between micro-controllers.

3.7.1. Links

I2C tutorial

3.7.2. ESP8266 to Arduino Nano

ESP8266 to Nano

This works similarly between other 5v components:

Arduino Pro Mini
Arduino Nano
Wemos D1 mini (ESP8266)
NodeMCU 32S (ESP32)

Note: ESP8266 and ESP32 boards such as Wemos or NodeMCU seem to be using 5v level.

Basic Sketch can be found at I2C Master and Slave

Usage is simply:

to upload the master to ESP32 or ESP8266 and slave to Arduino
open 2 consoles and run on correct ports cat /dev/ttyUSBx for each master and slave.
One console should show Sending=XXX, while the other should be Received=XXX with obviously same XXX

3.8. Radio - RFM12/RFM69CW

Below uses RFM12B and RFM69CW layouts which are compatible pins and at 868MHz.

3.8.1. Wiring

Antenna length:

433 1/4 wave = 164.7mm
433 1/2 wave = 329.4mm
433 full wave = 692.7mm

868 1/4 wave = 82.2mm
868 1/2 wave = 164.3mm
868 full wave = 345.5mm

3.8.2. Sketch and Console

Setup emitter and receiver as seen at:

Console example result:

rf69 lowpowerlab test

3.8.3. Links

Using Jeelib, enable RFM69/12 "compat" mode when using RFM69CW.

Unresolved directive in readme.adoc - include::categories/devices/servo/readme.adoc[Devices - Servo Motor]

3.9. Sensors - Current

Multiple sensor exists:

INA219

3.9.1. Code

sensor-current-INA219.ino

3.9.2. Links

INA219

3.10. Distance sensors

3.10.1. JSN-SR04T

Table 2. JSN-SR04T Connections
JSN-SR04T	Arduino
5 V	5 V
Trig	Pin 2
Echo	Pin 3
GND	GND

3.11. Sensors - Light

3.11.1. LDR

Wiring LDR

60k < resistor < 400k (the higher the less power consumption, but less precise too)
then callibrate to have an output between 0 and 256

int LDR_Pin = A0; //analog pin 0

void setup(){
  Serial.begin(9600);
}

void loop()
{
  int32_t LDRReading = analogRead(LDR_Pin);

  int32_t LDRfinal = map(LDRReading, 200, 1024, 0, 100);
  Serial.println(LDRfinal);
  delay(250);
}

3.11.2. TSL2561

This is standard i2c wiring.

For arduino: SCL=A5 and SDA=A4
For ESP12: SCL=D1 and SDA=D2

Links:

3.11.3. AS7262 6-Channel Visible Light / Color Sensor

Example:

https://www.instructables.com/id/A-Mimimal-Six-Color-Transmitted-Light-Spectrophoto/

Links:

3.12. Sensors - OnOff Switch

Wiring Switch

4,7M resistor

int TOGGLE_1_PORT = 7;

void setup(){
  Serial.begin(9600);
  pinMode(TOGGLE_1_PORT, INPUT);
}

void loop(){
  int toggleState = digitalRead(TOGGLE_1_PORT);

  Serial.println(toggleState);
  delay(250);
}

3.13. Sensors - Soil

3.13.1. Soil Moisture

Schema #1 - Adafruit

Adafruit version

Schema #2 - simple probes (no components)

Simple probes

Resistor can be 10k pull-up.

Sketch

int soil=0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int sensorValue = analogRead(A0);
  sensorValue = constrain(sensorValue, 600, 1022);
  soil = map(sensorValue, 600, 1022, 100, 0);
  Serial.print(soil);
  Serial.println("%");
  delay(1000);
}

3.14. Sensors - Teleinfo

3.14.1. Summary

In France, few components can be used to extract Main Home power consumption.
It is especially useful to have information such as consumption by time periods where periods can be high or low cost hours.

3.14.2. Hardware

Central board:

Micro-Controller
- Arduino Nano 5v
- or ESP8266
- or ESP32
Optocoupler: SFH6206
4.7k resistor

Arduino wiring

Parts

3.14.3. Sketch

#include <SoftwareSerial.h>

SoftwareSerial cptSerial(2, 3);

void setup() {
  Serial.begin(1200);     // opens serial port, sets data rate to 1200 bps
  cptSerial.begin(1200);
}

void loop() {
  if (cptSerial.available())
    Serial.write(cptSerial.read() & 0x7F);
}

Examples:

3.14.4. Installation

Once wired to computer, find correct USB tty number (dmesg | grep tty), then execute commands:

$ stty -F /dev/ttyUSB0 1200 sane evenp parenb cs7 -crtscts
$ cat /dev/ttyUSB0

Then other library can be used to parse and digest the teleinfo data that looks like below:

ADCO 02092xxxxxx @
OPTARIF HC.. <
ISOUSC 45 ?
HCHC 010956910 %
HCHP 016779643 >
PTEC HP..
IINST 021 Z
IMAX 047 J
PAPP 04860 3
HHPHC A ,
MOTDETAT 000000 B

3.14.5. Resources

3.15. Sensors - Temperature

Interesting compare of sensors

3.15.1. DS18B20

Temperature sensor.

Resources:

Wiring DS18B20

OneWire and Dallas libraries required to read DS18B20 sensor.

This is possible to wire several sensors together (not explained here).

Sketches to try this in example from libraries to install:

3.15.2. DHT22

Temperature and humidity sensor.

Resources:

DHT lib

Wiring DHT22

For some reasons, the jeelib driver library didn’t work using above wiring.

Sketches to try this in example from libraries to install:

Library DHTxx

3.15.3. SHT11

Temperature and humidity sensor.

Wiring SHT11

Usage of Jeelib as driver.

3.15.4. BMP85

Temperature and pressure sensor.

HTU21D

Temperature and humidity sensor.

This is standard i2c wiring.

Board	SCL	SDA
Arduino	A5	A4
ESP12	D1	D2
ESP32	D22	D21

Board

SCL

SDA

Arduino

A5

A4

ESP12

D1

D2

ESP32

D22

D21

HTU21D Pinouts

3.16. Sensors - Wind

3.16.1. Links

Faire soi-même à ultrasons

3.17. Sensors - Air

3.17.1. Links

CO2
OLED CO2

3.18. Gateways - CurrentCost

The Current Cost allows to monitor main power home usage live and historical.
Every 2 hours, historical reports can be submitted to home computer using USB adapter.
Additional plugable sensor can be used to monitor more devices.

3.18.1. Schema

Schema overview

3.18.2. How-To

Connect to USB and find which usb resource connected

$ lsusb
$ dmesg

Allow user access to resource and set speed

$ sudo stty -F /dev/ttyUSB0 57600
$ sudo chmod 777 /dev/ttyUSB0
$ cat /dev/ttyUSB0

3.18.3. Test

Run script from script folder (once mosquitto bus running on port 1884)

$ npm install serialport
$ npm install eyes
$ npm install xml2js
$ npm install mqtt
$ node pub-current-cost.js

3.18.4. Links

3.19. Gateways - ESPHome

ESP Home

3.19.1. Hacks

Xiaomi Temp sensors

These are bluetooth TH sensors which can be flashed and centralized through ESPHome gateways:

ATC Mi Thermometer

3.19.2. Links

Tutorial Basic

3.20. Gateways - Lego

3.20.1. ESP32 programming

Legoino

The only thing to do is import Legoino lib from ArduinoIDE.
Then setup your ESP32 board and port, and upload example.

Example at Lego Boost

3.20.2. Python programming

This is few resources to get started with python for Lego Boost

https://github.com/undera/pylgbst

the only pre-requisite is to get a BLED112 Bluetooth dongle.

Setup

$ sudo pip3 install pygatt
$ sudo pip3 install -U pylgbst

Example moving things

from pylgbst.hub import MoveHub
import time

hub = MoveHub()

for device in hub.peripherals:
    print(device)

hub.motor_A.timed(0.5, 0.8)
hub.motor_A.timed(0.5, -0.8)

hub.motor_B.angled(90, 0.8)
hub.motor_B.angled(-90, 0.8)

hub.motor_AB.timed(1.5, 0.8, -0.8)
hub.motor_AB.angled(90, 0.8, -0.8)

hub.motor_external.start_speed(0.2)
time.sleep(2)
hub.motor_external.stop()

Vision

3.20.3. Links

3.21. Gateways - Somfy

Two models:

RTS
IOHomeControl

RTS has many open projects. Not IOHomeControl.

RTS

There are Tahoma or other proprietary gateways.
However there seem to be simple-enough RF433-based alternatives.

3.21.1. References

3.22. Gateways - RfxTrx 433

RFXtrx433 is used to monitor and act on various proprietary systems such as:

Weather Station
Home Central Alarm

Listens on RfxTrx433 using nodejs and publishes to MQTT (mosquitto).

3.22.1. Hardware

Hardware overview

3.22.2. Hardware

Connect rfxtrx433 to USB and find which usb resource connected

$ lsusb
$ dmesg

Allow user access to resource and set speed

$ sudo stty -F /dev/ttyUSB1 38400 cs8
$ sudo chmod 777 /dev/ttyUSB1

Edit test script to point to USB devices or point Node-Red to correct USB device.

3.22.3. Software

Below is sample which listens on USB plugged RfxTrx433 and then publishes temperature/humidity/rain over MQTT.

node-rfxcom

#!/usr/bin/env node

var rfxcom = require("rfxcom"),
    eyes = require('eyes'),
    mqtt = require('mqtt');

var rfxtrx = new rfxcom.RfxCom("/dev/ttyUSB0", {debug: false} );
var client = mqtt.createClient('1883', 'localhost');

client.on('connect', function() {
  console.log('Connected for publications...');
});

// Start RFXCom activity
rfxtrx.on("th2", function (evt) {
    client.publish('sensors/' + parseInt(evt.id,16) + '/entries/1/events/temperature', '' + evt.temperature);
    client.publish('sensors/' + parseInt(evt.id,16) + '/entries/1/events/humidity', '' + evt.humidity);
});

rfxtrx.on("temp2", function (evt) {
    client.publish('sensors/' + parseInt(evt.id,16) + '/entries/1/events/temperature', '' + evt.temperature);
});

rfxtrx.on("rain2", function (evt) {
    var value = { rainrate: evt.rainrate, raintotal: evt.raintotal };
    client.publish('sensors/' + parseInt(evt.id,16) + '/entries/1/events/rain', JSON.stringify(value));
});

rfxtrx.initialise(function () {
    console.log("Device initialized");
});

3.23. Gateways - ZigBee

3.23.1. Products

ZigBee Products

ZigBee Alliance

Gateway

Recommended

3.23.2. Software

3.23.3. Firmware

Firmware page
Tips
- Unplug the ConBee II
- Start the command (with -t parameter)
- Plugin the ConBee II again

Find devices

$ ls -l /dev/serial/by-id
...
usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2213620-if00 -> ../../ttyACM1

Notes:
- previous OK firmware: 0x26580700
- currently used: 0x266b0700

Flash

$ docker run -it --rm --entrypoint "/bin/bash" --privileged --cap-add=ALL -v $(pwd):/firmware -v /dev:/dev -v /lib/modules:/lib/modules -v /sys:/sys marthoc/deconz
root@69a522554758:/# /usr/bin/GCFFlasher_internal -d /dev/ttyACM0 -t 60 -R 10 -f /firmware/deCONZ_ConBeeII_0x266b0700.bin.GCF
GCFFlasher V3_17 (c) dresden elektronik ingenieurtechnik gmbh
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2213620-if00 (ConBee II)
deCONZ firmware version 26580700
R21B18 Bootloader
Vers: 2.07
build: Jun 17 2019
flashing 164377 bytes: |==============================|
verify: .
SUCCESS
Wait 10 seconds until application starts

3.23.4. Usage

Running deCONZ as docker

screenshot zigbee deconz

Enable dialout

$ sudo usermod -a -G dialout $USER

Run as docker container

$ docker run -d \
    --name=deconz \
    -p 8080:8080 \
    -p 8443:8443 \
    --restart=always \
    -v /etc/localtime:/etc/localtime:ro \
    -v /opt/deconz:/root/.local/share/dresden-elektronik/deCONZ \
    -e DECONZ_WEB_PORT=8080 \
    -e DECONZ_WS_PORT=8443 \
    -e DECONZ_DEVICE=/dev/ttyZigbee \
    --device=/dev/ttyZigbee \
    marthoc/deconz

Run using docker-compose

version: "2"
services:
  deconz:
    image: marthoc/deconz
    ports:
      - 7080:7080
      - 7443:7443
      - 7900:5900
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - ./etc/deconz:/root/.local/share/dresden-elektronik/deCONZ
      - /run/udev:/run/udev:ro  # so that serial number vendor/product ids are known
    device_cgroup_rules:
      - 'c 166:* rmw' # allow creation of /dev/ttyACMx nodes via mknod
      - 'c 188:* rmw' # allow creation of /dev/ttyUSBx nodes via mknod
    devices:
      - /dev/bus/usb
    environment:
      - DECONZ_WEB_PORT=7080
      - DECONZ_WS_PORT=7443
      - DECONZ_VNC_MODE=1
      - DECONZ_VNC_PORT=5900
      - DECONZ_VNC_PASSWORD=${ZIGBEE_DECONZ_VNC_PASSWORD:-password}
      - DEBUG_INFO=1
      - DEBUG_APS=0
      - DEBUG_ZCL=0
      - DEBUG_ZDP=0
      - DEBUG_OTAU=0

Open a VNC onto localhost:7090 and default password

deconz vnc

Running as native

Default credentials

delight/delight

Tips

Browse to Configuration ⇒ Gateway, then Click on Advanced with pressing Shift+Alt

3.23.5. Deconz API

From Official Deconz API doc

Get API token (pre-requisit: browse to Hamburger menu → Gateway → Advanced → Click ‘Authenticate app’)

$ curl -d '{ "devicetype": "Node-RED"}' -H "Content-Type: application/json" -X POST http://deconz-server:40450/api
...
# Token is returned

List sensors

$ curl -H "Content-Type: application/json" http://deconz-server:40450/api/XXAAXX/sensors | jq .
...

Touchlink

$ curl -H "Content-Type: application/json" -X POST http://deconz-server:40450/api/9598E1143E/touchlink/scan

3.23.6. Deconz WebSocket API

WebSocket configuration

$ curl -H "Content-Type: application/json" http://deconz-server:40450/api/XXAAXX/config | jq .

{
  "UTC": "2020-08-23T18:31:17",
  "apiversion": "1.16.0",
  "backup": {
    "errorcode": 0,
    "status": "idle"
  },
  "bridgeid": "XOXOXOXOXO",
  "datastoreversion": "93",
  "devicename": "RaspBee",
  "dhcp": true,
...
  "uuid": "606b08d1-5f14-4032-86cc-xxxxxx",
  "websocketnotifyall": true,
  "websocketport": 40460,
  "whitelist": {
    "XOXOXOXOXO": {
      "create date": "2020-08-22T18:40:34",
      "last use date": "2020-08-22T18:40:34",
      "name": "Node-RED"
    },
 ...
  },
  "zigbeechannel": 15
}

WebSocket event listen (sample)

const WebSocket = require('ws');

const host = 'deconz-server';
const port = 40460;

const ws = new WebSocket('ws://' + host + ':' + port);

ws.onmessage = function(msg) {
    console.log(JSON.parse(msg.data));
}

3.23.7. References

Custom ZigBee projects

ZigUP

To put the ZigBee device in detect mode and assign from ConBee II web UI:

Xiaomi Aquara

Magic Cube
Hold reset for 3s
Temp/Humi/Pressure device
Hold reset until led light and blink
Door sensor
Hold reset for about 5s

Lidl

Lidl 220v plug
Hold button for 5s until power light blinks
Livarno Color Light Bulb
When light up, shutdown, 3s, light up, 3s … 3x time and keep up the last round, light should blink slowly

IKEA devices

Tradfri Light bulb:
Reset and re-assign controller by light-on, then 6x light-off/on and stay on the 6th time. Bulb blinks.
Tradfri Dimmer switch
Click 4x times on reset button + light blinks
Tradfri Remote ON/OFF switch
Open device (screw), Click 4x times on reset button + light blinks
Tradfri outlet
Hold paper clip for 5s to enter registration mode.

Tuya Zigbee

3 Gang Portable Remote:
Open the remote, click 5s on reset button
4 Gang Wall Remote:
Hold the Button 1 (bottom left) for 10s until blink
Curtain Gang:
Touch 5s the pause button to put in register. Calibration tips

tuya gang curtain

- First ensure you curtain is fully closed.
- Set the calibration to "start" and click Write. Now you are in Calibration mode.
- Above, click on the Exec button in the function Up / Open. In the calibration mode the 30 secondes duration is disable.
- Once your curtain is fully open click on the "Exec" button in the function "Stop"
- Click on the Exec button in the function Down / Close
- Once your curtain is fully closed click on the "Exec" button in the function "Stop"
- Set the calibration to "end" and click Write

3.24. Gateways - Z-Wave

3.24.1. Products

Procedures

Here are procedures to setup Z-Wave network:

Include

Z-Stick gen5 click 1s → blue slow blink continuously
Click "sync" on GreenWave plug → Stick shows blue long, then blue slow blink continuously
done

Exclude

Z-Stick gen5 click 3s → orange fast blink continuously
Click "sync" on GreenWave plug → Stick shows blue long, then orange fast blink continuously
done

3.24.2. Libraries

Python

https://github.com/OpenZWave/python-openzwave

$ sudo apt-get install --force-yes -y make libudev-dev g++ libyaml-dev
$ pip3 install python_openzwave
$ pip3 install urwid

# Check
$ pyozw_check -i -d /dev/ttyACM0
$ pyozw_check -l -d /dev/ttyACM0 -t 60

# Browse and set Switch
$ pyozw_shell -d /dev/ttyACM0
$$ cd nodes
$$ cd 5
$$ cd User
$$ set Switch to True

Control Panel

Docker Controller Panel

$ docker run --rm -it -p 8090:8090 --device=/dev/ttyACM0 ruimarinho/openzwave

Browse to http://localhost:8090 and switch on/off things from UI.

Node JS - open-zwave

https://github.com/OpenZWave/node-openzwave-shared

Install

$ git clone https://github.com/OpenZWave/node-openzwave-shared.git
$ cd node-openzwave-shared
$ sudo apt-get install openzwave
$ npm install libopenzwave-share

Usage from https://github.com/OpenZWave/node-openzwave-shared/blob/master/README-api.md

$ vi test2.js

# edit to ensure usage below
>> var ZWave = require('openzwave-shared');
$ node
> .load test2.js

# the 1st node is the USB controller stick
> console.log(nodes[1])
{ manufacturer: 'Aeotec',
  manufacturerid: '0x0086',
  product: 'Z-Stick Gen5',
  producttype: '0x0001',
  productid: '0x005a',
  type: 'Static PC Controller',
  name: '',
  loc: '',
  classes: { '32': { '0': [Object] } },
  ready: true }

# if Zwave Node #3 is a binary switch, to turn it on and off, use command class 37
> zwave.setValue(6, 37,  1,  0,  true);  // node 3: turn on

Tuning

Z-Stick Gen 5 - Disable anoying blink LED

$ sudo apt-get install cu
$ echo -e '\x01\x08\x00\xF2\x51\x01\x00\x05\x01\x51'|cu -l /dev/ttyZWave -s 115200

IoT-Tools project

1. Docker image

2. Boards layout

2.1. Arduino

2.2. ESP 8266

2.3. ESP 32

3. Guides

3.1. Setup Arduino IDE for ESP8266

3.1.1. Procedure

3.1.2. File System

3.2. Setup Arduino IDE for ESP32

3.2.1. Hardware

3.2.2. Procedure

3.2.3. Resources

3.3. Softwares

3.3.1. Fritzing

3.3.2. Kicad

3.3.3. Arduino IDE

3.4. Tips - Low-power

3.4.1. Info

3.4.2. Measures

3.5. Radio - Bluetooth

3.6. Radio - CAN bus

3.6.1. Code

3.6.2. Resources

3.7. Radio - I2C Connections

3.7.1. Links

3.7.2. ESP8266 to Arduino Nano

3.8. Radio - RFM12/RFM69CW

3.8.1. Wiring

3.8.2. Sketch and Console

3.8.3. Links

3.9. Sensors - Current

3.9.1. Code

3.9.2. Links

3.10. Distance sensors

3.10.1. JSN-SR04T

3.11. Sensors - Light

3.11.1. LDR

3.11.2. TSL2561

3.11.3. AS7262 6-Channel Visible Light / Color Sensor

3.12. Sensors - OnOff Switch

3.13. Sensors - Soil

3.13.1. Soil Moisture

Schema #1 - Adafruit

Schema #2 - simple probes (no components)

Sketch

3.14. Sensors - Teleinfo

3.14.1. Summary

3.14.2. Hardware

3.14.3. Sketch

3.14.4. Installation

3.14.5. Resources

3.15. Sensors - Temperature

3.15.1. DS18B20

3.15.2. DHT22

3.15.3. SHT11

3.15.4. BMP85

HTU21D

3.16. Sensors - Wind

3.16.1. Links

3.17. Sensors - Air

3.17.1. Links

3.18. Gateways - CurrentCost

3.18.1. Schema

3.18.2. How-To

3.18.3. Test

3.18.4. Links

3.19. Gateways - ESPHome

3.19.1. Hacks

Xiaomi Temp sensors

3.19.2. Links

3.20. Gateways - Lego

3.20.1. ESP32 programming

3.20.2. Python programming

3.20.3. Links

3.21. Gateways - Somfy

3.21.1. References

3.22. Gateways - RfxTrx 433

3.22.1. Hardware