admin – G1Tech

Send data from ESP8266 to Grafana via Prometheus

Posted on 08.02.2020 by admin

in progress…

https://github.com/G1Tech/youTubeStream/blob/master/prometheus-bme280-v2.ino

Install Docker on a Raspberry Pi 4

Posted on 19.10.201902.02.2020 by admin

Add your new user to the sudo group

sudo usermod -aG sudo g1

Update the apt package index & Upgrade all current program package

sudo apt-get update
sudo apt-get upgrade

Install packages to allow apt to use a repository over HTTPS:

sudo apt-get install apt-transport-https ca-certificates curl gnupg2 software-properties-common

Add Docker’s official GPG key:

curl -fsSL https://download.docker.com/linux/raspbian/gpg | sudo apt-key add -

look up the name of your linux distribution

lsb_release -cs

Setup the Docker Repo.

sudo su
echo "deb [arch=armhf] https://download.docker.com/linux/raspbian buster stable" > /etc/apt/sources.list.d/docker.list
exit

Update the apt package index.

sudo apt-get update

Install the latest version of Docker Engine – Community and containerd without AUFS

sudo apt-get install --no-install-recommends docker-ce docker-ce-cli containerd.io

Show Docker Version

sudo docker version

Verify that Docker Engine – Community is installed correctly by running the hello-world image.

sudo docker run hello-world

Give the ‘g1’ user the ability to run Docker.

sudo usermod -aG docker g1

How To Install node_exporter for Prometheus on Raspberry PI or Orange PI

Posted on 25.09.201902.02.2020 by admin

Create one new user for node_exporter

sudo useradd --no-create-home --shell /bin/false node_exporter

download file

cd ~
wget https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-armv7.tar.gz

unpack archive

tar xvf node_exporter-0.18.1.linux-armv7.tar.gz

copy files and directories

sudo cp node_exporter-0.18.1.linux-armv7/node_exporter /usr/local/bin
sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter

finally, delete files and directory from your home

rm -rf node_exporter-0.18.1.linux-armv7.tar.gz node_exporter-0.18.1.linux-armv7

create a new systemd service file.

sudo nano /etc/systemd/system/node_exporter.service

[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target

[Service]
User=node_exporter
Group=node_exporter
Type=simple
ExecStart=/usr/local/bin/node_exporter

[Install]
WantedBy=multi-user.target

then reload systemd, start service and check status.

sudo systemctl daemon-reload
sudo systemctl start node_exporter
sudo systemctl enable node_exporter

change configuration in a file with named prometheus.yml:

sudo nano /etc/prometheus/prometheus.yml

global:
   scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs: 
      - targets: ['localhost:9090']
  - job_name: 'node_exporter'
    scrape_interval: 5s
    static_configs: 
      - targets: ['localhost:9100']

Restart prometheus and check status.

sudo systemctl restart prometheus
sudo systemctl status prometheus

For check node_exporter, enter in the Expression field, node_memory_MemAvailable/1024/1024 and then press the Execute button.
then in console enter free -h

Raspberry Pi: Webcam Server with Stream Live Video base on Motion

Posted on 24.09.201924.09.2019 by admin

sudo apt-get update
sudo apt-get upgrade

sudo raspi-config

sudo apt-get install motion

sudo nano /etc/motion/motion.conf

...
daemon on
...
stream_port 8081
...
stream_localhost off
...
width 640
...
height 480
...
framerate 25
...

sudo nano /etc/default/motion

...
start_motion_daemon=yes
...

sudo service motion restart

How To Install Prometheus on Raspberry PI or Orange PI

Posted on 02.09.201922.09.2019 by admin

Prometheus is a leading open-source monitoring solution with alerting functional. By default, Prometetheus export only itself metrics and need aditioanl module for accept more information. You can finde more information on: https://prometheus.io/

Safety First

We need one new user for prometeus service without home directory and shell access.

sudo useradd --no-create-home --shell /bin/false prometheus

according linux best practise create two directorise, one for configuration and other for data.

sudo mkdir /etc/prometheus 
sudo mkdir /var/lib/prometheus

and set new user and group ownership

sudo chown prometheus:prometheus /etc/prometheus 
sudo chown prometheus:prometheus /var/lib/prometheus

Download and Unpack prometheus

Before download, find the latest stable verion on Prometeus download page. At this time it’s: prometheus-2.12.0.linux-armv7.tar.gz

download file and compere checksum:

cd ~
wget https://github.com/prometheus/prometheus/releases/download/v2.12.0/prometheus-2.12.0.linux-armv7.tar.gz
 sha256sum  prometheus-2.12.0.linux-armv7.tar.gz

if checksume match than unpack archive:

tar xvf  prometheus-2.12.0.linux-armv7.tar.gz

copy files and directories

sudo cp prometheus-2.12.0.linux-armv7/prometheus /usr/local/bin/
sudo cp prometheus-2.12.0.linux-armv7/promtool /usr/local/bin/
sudo cp -r prometheus-2.12.0.linux-armv7/consoles /etc/prometheus
sudo cp -r prometheus-2.12.0.linux-armv7/console_libraries /etc/prometheus

and set the user and group ownership

sudo chown prometheus:prometheus /usr/local/bin/prometheus
sudo chown prometheus:prometheus /usr/local/bin/promtool
sudo chown -R prometheus:prometheus /etc/prometheus/consoles
sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries

finally, delete files and directory from your home

rm -rf prometheus-2.12.0.linux-armv7.tar.gz prometheus-2.12.0.linux-armv7

Configuring prometeus to monitor itself

Create configuration in a file with named prometheus.yml:

sudo nano /etc/prometheus/prometheus.yml

Prometheus config file /etc/prometheus/prometheus.yml

Important: Prometheus configuration file uses the YAML format, don’t user tabs!

global:
  scrape_interval: 15s

scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9090']

set the user and group ownership

sudo chown prometheus:prometheus /etc/prometheus/prometheus.yml

Let’s running Prometheus

create a new systemd service file.

sudo nano /etc/systemd/system/prometheus.service

add following data into the file: /etc/systemd/system/prometheus.service

[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target

[Service]
User=prometheus
Group=prometheus
Type=simple
ExecStart=/usr/local/bin/prometheus \
    --config.file /etc/prometheus/prometheus.yml \
    --storage.tsdb.path /var/lib/prometheus/ \
    --web.console.templates=/etc/prometheus/consoles \
    --web.console.libraries=/etc/prometheus/console_libraries

[Install]
WantedBy=multi-user.target

then reload systemd,

sudo systemctl daemon-reload

start service,

sudo systemctl start prometheus

check status,

sudo systemctl status prometheus

and after successful running enable the service to start on boot

sudo systemctl enable prometheus

find out your IP address

ifconfig

open link in browser

Без рубрики

ESP8266: ThingBoard платформа для сбора и обработки данных

Posted on 26.11.201722.09.2019 by admin

code

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

#include <Wire.h>

#include <SPI.h>

#include <Adafruit_Sensor.h>

#include <Adafruit_BME280.h>

#include <PubSubClient.h>

#include <ESP8266WiFi.h>

#define WIFI_AP ""

#define WIFI_PASSWORD ""

#define TOKEN ""

char thingsboardServer[] = "";

WiFiClient wifiClient;

Adafruit_BME280 bme;

PubSubClient client(wifiClient);

int status = WL_IDLE_STATUS;

unsigned long lastSend;

void setup()

{

Serial.begin(115200);

bme.begin();

delay(10);

InitWiFi();

client.setServer( thingsboardServer, 1883 );

lastSend = 0;

}

void loop()

{

if ( !client.connected() ) {

reconnect();

}

if ( millis() - lastSend > 1000 ) { // Update and send only after 1 seconds

getAndSendData();

lastSend = millis();

}

client.loop();

}

void getAndSendData()

{

Serial.print("getAndSendData: ");

float h = bme.readHumidity();

float t = bme.readTemperature();

float p = bme.readPressure()*0.007500617;

String temperature = String(t);

String humidity = String(h);

String pressure = String(p);

// Just debug messages

Serial.print( temperature ); Serial.print( ", " );

Serial.print( pressure ); Serial.print( ", " );

Serial.println( humidity );

// Prepare a JSON payload string

String payload = "{";

payload += "\"temperature\":"; payload += temperature; payload += ",";

payload += "\"pressure\":"; payload += pressure; payload += ",";

payload += "\"humidity\":"; payload += humidity;

payload += "}";

char attributes[100];

payload.toCharArray( attributes, 100 );

client.publish( "v1/devices/me/telemetry", attributes );

Serial.println( attributes );

}

void InitWiFi()

{

Serial.println("Connecting to AP ...");

// attempt to connect to WiFi network

WiFi.begin(WIFI_AP, WIFI_PASSWORD);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("Connected to AP");

}

void reconnect() {

// Loop until we're reconnected

while (!client.connected()) {

status = WiFi.status();

if ( status != WL_CONNECTED) {

WiFi.begin(WIFI_AP, WIFI_PASSWORD);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("Connected to AP");

}

Serial.print("Connecting to ThingsBoard node ...");

// Attempt to connect (clientId, username, password)

if ( client.connect("ESP8266 Device", TOKEN, NULL) ) {

Serial.println( "[DONE]" );

} else {

Serial.print( "[FAILED] [ rc = " );

Serial.print( client.state() );

Serial.println( " : retrying in 5 seconds]" );

// Wait 5 seconds before retrying

delay( 5000 );

}

[collapse]

Без рубрики

Цифровой датчик света и ультрафиолета на Si1145

Posted on 20.08.201722.09.2019 by admin

UV Sensor

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

#include "Adafruit_SI1145.h"

Adafruit_SI1145 uv = Adafruit_SI1145();

LiquidCrystal_I2C lcd(0x3F,20,4);

void setup() {

lcd.init();

Serial.begin(9600);

if (! uv.begin()) {

Serial.println("Didn't find Si1145");

while (1);

}

Serial.println("OK!");

}

void loop() {

Serial.println("===================");

Serial.print("Vis: "); Serial.println(uv.readVisible());

Serial.print("IR: "); Serial.println(uv.readIR());

Serial.print("UV: "); Serial.println(uv.readUV()/100.0);

lcd.backlight();

lcd.setCursor(0,0);

lcd.print("Vis: ");

lcd.setCursor(5,0);

lcd.print(uv.readVisible());

lcd.setCursor(0,1);

lcd.print("IR: ");

lcd.setCursor(5,1);

lcd.print(uv.readIR());

lcd.setCursor(0,2);

lcd.print("UV: ");

lcd.setCursor(5,2);

lcd.print(uv.readUV()/100.0);

delay(1000);

}

[collapse]

Без рубрики

OpenWeatherMap пример работы

Posted on 01.08.201722.09.2019 by admin

GET

#include <WiFi.h>

#include <Wire.h>

const char* ssid = "SSID";

const char* password = "";

const char * hostDomain = "api.openweathermap.org";

const int hostPort = 80;

WiFiClient client;

void setup()

{

Serial.begin(9600);

delay(100);

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

}

void requestURL(const char * host, uint8_t port)

{

Serial.println("Connecting to domain: " + String(host));

if (!client.connect(host, port))

{

Serial.println("connection failed");

return;

}

Serial.println("Connected!");

client.println("GET /data/2.5/weather?id=6167865&APPID=9cXXXXXX0c150XXXX768ab17960aaadf HTTP/1.1");

client.print("Host: api.openweathermap.org\r\n");

client.print("Connection: close\r\n\r\n");

unsigned long timeout = millis();

while (client.available() == 0)

{

if (millis() - timeout > 1000)

{

Serial.println(">>> Client Timeout !");

client.stop();

return;

}

// Read all the lines of the reply from server and print them to Serial

while (client.available())

{

String line = client.readStringUntil('\r');

Serial.print(line);

}

Serial.println();

Serial.println("closing connection");

client.stop();

}

void loop()

{

Serial.println();

requestURL(hostDomain, hostPort);

delay(30000);

}

[collapse]

JSON

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

#include <WiFi.h>

#include <Wire.h>

#include <ArduinoJson.h>

const char* ssid = "SSID";

const char* password = "";

const char * hostDomain = "api.openweathermap.org";

const int hostPort = 80;

String line;

WiFiClient client;

void setup()

{

Serial.begin(9600);

delay(100);

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

}

void requestURL(const char * host, uint8_t port)

{

Serial.println("Connecting to domain: " + String(host));

if (!client.connect(host, port))

{

Serial.println("connection failed");

return;

}

Serial.println("Connected!");

client.println("GET /data/2.5/weather?id=6167865&APPID=XXXXXXXXXXXXXX5f5768ab17960aaadf&units=metric HTTP/1.1");

client.print("Host: api.openweathermap.org\r\n");

client.print("Connection: close\r\n\r\n");

unsigned long timeout = millis();

while (client.available() == 0)

{

if (millis() - timeout > 1000)

{

Serial.println(">>> Client Timeout !");

client.stop();

return;

}

// Read all the lines of the reply from server and print them to Serial

while (client.available())

{

line = client.readStringUntil('\r');

}

Serial.println();

Serial.println("closing connection");

client.stop();

}

void parseJSON(String weather)

{

StaticJsonBuffer<3000> jsonBuffer;

JsonObject& root = jsonBuffer.parseObject(weather);

if (!root.success())

{

Serial.print("ParseObject() failed");

}

String name = root["name"];

Serial.print("name: ");

Serial.println(name);

float temp = root["main"]["temp"];

Serial.print("temp: ");

Serial.print(temp);

Serial.println(" C");

float temp_min = root["main"]["temp_min"];

Serial.print("temp_min: ");

Serial.print(temp_min);

Serial.println(" C");

float temp_max = root["main"]["temp_max"];

Serial.print("temp_max: ");

Serial.print(temp_max);

Serial.println(" C");

float pressure = root["main"]["pressure"];

Serial.print("pressure: ");

Serial.print(pressure);

Serial.println(" mmHg");

float humidity = root["main"]["humidity"];

Serial.print("humidity: ");

Serial.print(humidity);

Serial.println(" %");

}

void loop()

{

Serial.println();

requestURL(hostDomain, hostPort);

Serial.print(line);

Serial.println();

Serial.println("-------------");

Serial.println();

parseJSON(line);

delay(30000);

}

[collapse]

Без рубрики

Thingspeak пример работы

Posted on 07.03.201722.09.2019 by admin

ESP8266

#include <ESP8266WiFi.h> // Include the ESP8266 Library

#include "ThingSpeak.h" // Include the ThingSpeak library

WiFiClient client;

const char* ssid = "SSID"; // Enter your WiFi network name

const char* password = "PASSWD"; // Enter your WiFi password

unsigned long myChannelNumber = 237783;

const char * myWriteAPIKey = "WRITE_API";

const char * myReadAPIKey = "READ_API";

void setup() {

Serial.begin(9600); // Get ready for serial communications and display the connetion status

delay(100);

Serial.println();

Serial.print("Connecting to WiFi network - ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

ThingSpeak.begin(client);

}

void loop() {

int potentiometerValue = analogRead(A0);

ThingSpeak.writeField(myChannelNumber, 1, potentiometerValue, myWriteAPIKey);

int readField = ThingSpeak.readFloatField(myChannelNumber, 1, myReadAPIKey);

Serial.print("Current potentiometer value is: ");

Serial.println(readField);

delay(16000);

}

[collapse]

ESP32

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

#include <WiFi.h>

#include <Wire.h>

#include <Adafruit_Sensor.h>

#include <Adafruit_BME280.h>

#define SEALEVELPRESSURE_HPA (1013.25)

const char* ssid = "SSID";

const char* password = "PASS";

const char * hostDomain = "api.thingspeak.com";

const int hostPort = 80;

String myWriteAPIKey = "YNYD7OQXR8SZVF6U";

WiFiClient client;

Adafruit_BME280 bme;

float bmeTemperature = 0;

float bmePressure = 0;

float bmeHumidity =0;

void setup()

{

Serial.begin(9600);

delay(100);

if (!bme.begin()) {

Serial.println("Could not find a valid BME280 sensor, check wiring!");

while (1);

}

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

}

void requestURL(const char * host, uint8_t port, float Temperature, float Pressure, float Humidity)

{

Serial.println("Connecting to domain: " + String(host));

if (!client.connect(host, port))

{

Serial.println("connection failed");

return;

}

Serial.println("Connected!");

// This will send the request to the server

String getStr = myWriteAPIKey;

getStr +="&field1=";

getStr += String(Temperature);

getStr +="&field2=";

getStr += String(Pressure);

getStr +="&field3=";

getStr += String(Humidity);

getStr += "\r\n\r\n";

Serial.println(getStr);

client.print("GET /update HTTP/1.1\n");

client.print("Host: api.thingspeak.com\n");

client.print("Connection: close\n");

client.print("X-THINGSPEAKAPIKEY: "+myWriteAPIKey+"\n");

client.print("Content-Type: application/x-www-form-urlencoded\n");

client.print("Content-Length: ");

client.print(getStr.length());

client.print("\n\n");

client.print(getStr);

unsigned long timeout = millis();

while (client.available() == 0)

{

if (millis() - timeout > 5000)

{

Serial.println(">>> Client Timeout !");

client.stop();

return;

}

// Read all the lines of the reply from server and print them to Serial

while (client.available())

{

String line = client.readStringUntil('\r');

Serial.print(line);

}

Serial.println();

Serial.println("closing connection");

client.stop();

}

void loop()

{

bmeTemperature = bme.readTemperature();

bmePressure = bme.readPressure()*0.007500617;

bmeHumidity = bme.readHumidity();

Serial.print("Temperature = ");

Serial.print(bmeTemperature);

Serial.println(" *C");

Serial.print("Pressure = ");

Serial.print(bmePressure);

Serial.println(" hPa");

Serial.print("Humidity = ");

Serial.print(bmeHumidity);

Serial.println(" %");

Serial.println();

requestURL(hostDomain, hostPort, bmeTemperature, bmePressure, bmeHumidity);

delay(60000);

}

[collapse]

Без рубрики

web server css

Posted on 16.02.201722.09.2019 by admin

Title

#include <ESP8266WiFi.h>

#include <WiFiClient.h>

#include <ESP8266WebServer.h>

#include <ESP8266mDNS.h>

MDNSResponder mdns;

ESP8266WebServer server(80);

// Replace with your network credentials

const char* ssid = "";

const char* password = "";

String webPage = "";

int test_pin = 16;

void setup(void){

webPage += "<!DOCTYPE HTML> <html> <head> <title>G1Tech: ESP8266 Web Server</title>";

webPage += "<style type=\"text/css\">";

webPage += ".label {display: inline; padding: .2em .6em .3em; font-size: 75%; font-weight: 700; line-height: 1; color: #fff; text-align: center; white-space: nowrap; vertical-align: baseline; border-radius: .25em;}";

webPage += ".label-default {background-color: #777;}";

webPage += ".btn {background-color: #4CAF50; border: none; color: white; padding: 16px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; -webkit-transition-duration: 0.4s; transition-duration: 0.4s; cursor: pointer;}";

webPage += ".btn-on {background-color: white; color: black; border: 2px solid #4CAF50;}";

webPage += ".btn-on:hover {background-color: #4CAF50; color: white;}";

webPage += ".btn-off {background-color: white; color: black; border: 2px solid #f44336;}";

webPage += ".btn-off:hover {background-color: #f44336; color: white;}";

webPage += "</style> </head> <body>";

webPage += "<h1>G1Tech: ESP8266 Web Server</h1><h1><p class=\"label label-default\">LED #16 </p><p><a href=\"LEDOn\"><button class=\"btn btn-on\">ON</button></a> <a href=\"LEDOff\"><button class=\"btn btn-off\" >OFF</button></a></p></h1></body></html>";

pinMode(test_pin, OUTPUT);

digitalWrite(test_pin, LOW);

delay(1000);

Serial.begin(9600);

WiFi.begin(ssid, password);

Serial.println("");

// Wait for connection

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.print("Connected to ");

Serial.println(ssid);

Serial.print("IP address: ");

Serial.println(WiFi.localIP());

if (mdns.begin("esp8266", WiFi.localIP())) {

Serial.println("MDNS responder started");

}

server.on("/", [](){

server.send(200, "text/html", webPage);

});

server.on("/LEDOn", [](){

server.send(200, "text/html", webPage);

digitalWrite(test_pin, LOW);

Serial.println(digitalRead(test_pin));

delay(1000);

});

server.on("/LEDOff", [](){

server.send(200, "text/html", webPage);

digitalWrite(test_pin, HIGH);

Serial.println(digitalRead(test_pin));

delay(1000);

});

server.begin();

Serial.println("HTTP server started");

}

void loop(void){

server.handleClient();

}

[collapse]

Safety First

Download and Unpack prometheus

Configuring prometeus to monitor itself

Let’s running Prometheus

Login