Günter Obiltschnig obiltschnig

👨‍💻

I may be slow to respond.

Software Engineer & Entrepreneur focused on IoT, C++, JavaScript, embedded. Founder/creator of @macchina-io and @pocoproject.

obiltschnig / mijia_btle.js

Created May 9, 2025 04:41

Access Xiaomi Mijia Temperature/Humidity Sensor via Bluetooth LE (macchina.io EDGE)

	const GAP_SERVICE_ID = 0x1800;
	const BATTERY_SERVICE_ID = 0x180F;
	const DEVICE_NAME_CHAR_ID = 0x2A00;
	const BATTERY_LEVEL_CHAR_ID = 0x2A19;
	const CLIENT_CHAR_CONF_DESCR_ID = 0x2902;
	const DEVICE_ADDRESS = '58:2D:34:35:D7:1D';
	const ENV_SENSORS_SERVICE_UUID = '226c0000-6476-4566-7562-66734470666d';
	const ENV_SENSORS_CHAR_UUID = '226caa55-6476-4566-7562-66734470666d';

obiltschnig / macchina_thingspeak.js

Created May 25, 2024 11:48

macchina.io JavaScript ThingSpeak

	const net = require('net');

	const API_KEY = 'XXXXXXXXXXXXXXXX';

	function sendToThingSpeak(temp, hum)
	{
	const uri = 'https://api.thingspeak.com/update.json';
	var httpRequest = new net.HTTPRequest('POST', uri);

	httpRequest.parameters = {

obiltschnig / macchina-ruuvi-mqtt.js

Created May 25, 2024 11:09

macchina.io EDGE - Ruuvi Tag MQTT Message Decoding

	function mac2string(mac)
	{
	var result = '';
	for (var i = 0; i < mac.length; i++)
	{
	if (i > 0) result += ':';
	result += mac[i].toString(16).padStart(2, '0');
	}
	return result;
	}

obiltschnig / get_devices.js

Created April 27, 2023 17:07

macchina.io REMOTE API JavaScript Example

	const https = require('https');

	const token = '<jwt>';

	const requestOptions = {
	hostname: 'remote.macchina.io',
	port: 443,
	path: '/my-devices/api/devices?status=all',
	method: 'GET',
	headers: {

obiltschnig / macchina-edge-demo.js

Last active July 22, 2021 19:08

Writing sensor values to an InfluxDB database with macchina.io EDGE

	var net = require('net');

	//
	// An object for writing measurements to InfluxDB
	//
	const InfluxDB = {
	formatValue: function(value) {
	if (typeof value === 'number')
	{
	return value.toString();

obiltschnig / coap-server.cpp

Created June 11, 2021 15:01

libcoap example server

	// g++ -o coap-server coap-server.cpp -lcoap-2-openssl -lPocoNet -lPocoFoundation


	#include <Poco/Net/SocketAddress.h>
	#include <Poco/Random.h>
	#include <Poco/NumberFormatter.h>
	#include <Poco/Exception.h>
	#include <coap2/coap.h>
	#include <iostream>

obiltschnig / coap-get.cpp

Created June 11, 2021 14:59

libcoap example client

	// g++ -o coap-get coap-get.cpp -lcoap-2-openssl -lPocoNet -lPocoFoundation


	#include <Poco/Net/SocketAddress.h>
	#include <Poco/Exception.h>
	#include <coap2/coap.h>
	#include <cstring>
	#include <iostream>

obiltschnig / SAXParserSample.cpp

Created March 26, 2021 14:14

	//
	// SAXParser.cpp
	//
	// This sample demonstrates the SAXParser class.
	//
	// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
	// and Contributors.
	//
	// SPDX-License-Identifier: BSL-1.0
	//

obiltschnig / mijia.js

Created July 16, 2020 16:03

Access Xiaomi Mijia Temperature/Humidity Sensor via Bluetooth LE (macchina.io)

	var sensorRef = serviceRegistry.findByName('io.macchina.btle.peripheral.58:2D:34:35:D7:1D');
	var sensor = sensorRef.instance();

	const CHAR_BATTERY_LEVEL = 0x0018; // characteristic for reading battery level (0-99)
	const CHAR_NOTIFICATION = 0x0010; // characteristic for enabling temperature/humidity notifications

	console.log('connecting...');

	function parseValue(str)
	{

obiltschnig / SocketClient.c

Created December 7, 2019 09:40