LosantGists’s gists

LosantGists / arduino-modbus-rtu-mqtt.ino

Created February 28, 2020 18:15

Example sketch that reads values from Modbus RTU and reports them using MQTT

	#include <ArduinoModbus.h>
	#include <WiFiNINA.h>
	#include <MQTT.h>

	// WiFi credentials.
	const char ssid[] = "wifi-name";
	const char pass[] = "wifi-password";

	// MQTT credentials.
	const char* MQTT_CLIENT_ID = "mqtt-client-id";

LosantGists / arduino-modbus-rtu.ino

Created February 27, 2020 21:37

Example sketch that reads Modbus RTU data with an Arduino

	#include <ArduinoModbus.h>

	// How often (in milliseconds) the sensors will be read.
	const unsigned long REPORT_INTERVAL = 1000;

	void setup() {
	Serial.begin(9600);
	while(!Serial);

	if (!ModbusRTUClient.begin(9600)) {

LosantGists / sse-example.hbs

Created January 6, 2020 20:59

Losant Streaming Endpoint Example

	<html>
	<head>
	<script>
	// Connect to one of your Experience Endpoints.
	let evtSource = new EventSource('/api/stream/devices/MY-DEVICE-ID');

	//Losant sends events using the mqttMessage subject.
	evtSource.addEventListener('mqttMessage', function(e) {

	// Very useful during development to see the data format.

LosantGists / file-upload-form.hbs

Created August 3, 2019 19:34

	{{! Only show the upload form if the user is an admin and a member of the Kanarra Technologies group }}
	{{#eq experience.user.experienceGroups.[0].name 'Kanarra Technologies'}}
	{{#eq experience.user.userTags.role 'admin'}}
	<form action="/maintenance-intervals" method="POST" enctype="multipart/form-data">
	<div style="font-size: 16px; text-align:center;margin-bottom:15px;">
	Upload new maintenance intervals
	</div>
	<div>
	<div style="text-align:center;">
	<input type="file" name="maintenanceIntervals" id="maintenanceIntervals" accept=".csv">

LosantGists / writing-guide.ipynb

Created April 24, 2019 18:19

Losant Notebook Writing Guide

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LosantGists / losant-example-vega-lite-configuration.json

Last active October 4, 2018 13:31

Example Losant Vega-Lite Configuration

	{
	"$schema": "https://vega.github.io/schema/vega-lite/v2.json",
	"width": {{block.width}},
	"height": {{block.height}},
	"autosize": {
	"type": "fit",
	"contains": "padding"
	},
	"config": {
	"axis": {

LosantGists / esp32-arduino-losant.ino

Created July 13, 2018 13:22

Connecting the ESP32 to the Internet with Arduino and Losant

	/**
	Copyright (c) 2016 Losant IoT. All rights reserved.
	https://www.losant.com
	*/

	#include <WiFiClientSecure.h>
	#include <Losant.h>

	// WiFi credentials.
	const char* WIFI_SSID = "WIFI_SSID";

LosantGists / main.py

Created June 4, 2018 16:43

Reading TMP36 temperature data and reporting to Sigfox using Pycom LoPy4

	import machine
	from network import Sigfox
	import socket
	import struct
	import time

	# init Sigfox for RCZ2 (USA, Mexico, Brazil)
	# other zones:
	# RCZ1: Europe, Oman, South Africa
	# RCZ2: USA, Mexico, Brazil

LosantGists / imp-agent-code.nut

Created March 31, 2018 13:13


	// Import libraries
	#require "JSONEncoder.class.nut:2.0.0"

	// Log the URLs we need
	server.log("Turn LED On: " + http.agenturl() + "?led=1");
	server.log("Turn LED Off: " + http.agenturl() + "?led=0");

	function sendSensorDataToLosant(data) {
	local losantWebhookURL = "LOSANT_WEBHOOK_URL"

LosantGists / imp-device-code.nut

Created March 30, 2018 20:09