mqtt.org
arduino-esp32
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mqtt.org | arduino-esp32 | |
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28 | 228 | |
5,058 | 12,590 | |
0.1% | 3.4% | |
6.8 | 9.6 | |
18 days ago | 4 days ago | |
SCSS | C++ | |
- | GNU Lesser General Public License v3.0 only |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
mqtt.org
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Simplest Guide to DIY Your Own LLM Toy in 2024
MQTT (optional): If you're aiming for advanced customization, familiarity with MQTT (a lightweight messaging protocol) will be beneficial for communicating between the toy and the server.
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How to Keep a History of MQTT Data With Node.js
The MQTT protocol is widely used in IoT applications because of its simplicity and ability to connect different data sources to applications using a publish/subscribe model. While many MQTT brokers support persistent sessions and can store message history as long as an MQTT client is not available, there may be cases where data needs to be stored for a longer period. In such cases, it is recommended to use a time series database. There are many options available, but if you need to store unstructured data such as images, sensor data, or Protobuf messages, consider using ReductStore. It is a time series database specifically designed for storing large amounts of blob data and optimized for IoT and edge computing.
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Introducing SeaStreamer 🌊 - a stream processing toolkit for working with Kafka and Redis Streams
https://mqtt.org is more popular, but its more complex. You will unlikely write your own mqtt while you can easily write own stomp broker.
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Control your IoT devices with this new MQTT Client in C# (published on NuGet)
I wanted to share my latest package (published on NuGet) implementing the MQTT v5 protocol.
- I'm working on a project, which will let me connect esp01 board directly to database like mongo DB.
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MQTT vs. Kafka: An IoT Advocate's Perspective
I jumped onto https://mqtt.org/ to try to answer my usual use-case question about non-Kafka messaging, which is: "Do the messages get saved anywhere so you can come back and read them later?" Still not entirely sure about it.
But I did see:
This is why MQTT has 3 defined quality of service levels: 0 - at most once, 1- at least once, 2 - exactly once
- sending messages to raspberry pi 3 from pico
- Choosing a protocol for communication between multiple microcontrollers
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Release v0.12.3 of Rust based MQTT broker, rumqttd - Bridging support and metrics exporting
rumqttd is a high performance, embeddable MQTT broker that we wrote in Rust. MQTT is extremely lightweight publish/subscribe messaging transport for the Internet of Things (IoT).
- IIoT, Trabalhando com telemetria de drones [Episódio 1]
arduino-esp32
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Any good/worthwhile Camera sensor modules for arduino/pico for still photography?
You could just buy ready-made ESP32 boards with an OV2640 camera built-in, then customize the example sketch from https://github.com/espressif/arduino-esp32/tree/master/libraries/ESP32/examples/Camera/CameraWebServer to your liking.
- I am trying to write to an SD card, it "works" but I can only find the file on PC if I use data recovery software?
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ESP32 memory corruption
Are you perhaps this poster? https://github.com/espressif/arduino-esp32/issues/5250 - asking that poster for the list I just asked for went nowhere and it was auto-closed.
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ESP32 WiFiMulti: Connect to the Strongest Wi-Fi Network (from a listing of networks).
/* * Based on the following examples: * WiFi > WiFiMulti: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiMulti/WiFiMulti.ino * WiFi > WiFiScan: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiScan/WiFiScan.ino * Complete project details at our blog: https://RandomNerdTutorials.com/ * */ #include #include WiFiMulti wifiMulti; // WiFi connect timeout per AP. Increase when connecting takes longer. const uint32_t connectTimeoutMs = 10000; void setup(){ Serial.begin(115200); delay(10); WiFi.mode(WIFI_STA); // Add list of wifi networks wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1"); wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2"); wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3"); // WiFi.scanNetworks will return the number of networks found int n = WiFi.scanNetworks(); Serial.println("scan done"); if (n == 0) { Serial.println("no networks found"); } else { Serial.print(n); Serial.println(" networks found"); for (int i = 0; i < n; ++i) { // Print SSID and RSSI for each network found Serial.print(i + 1); Serial.print(": "); Serial.print(WiFi.SSID(i)); Serial.print(" ("); Serial.print(WiFi.RSSI(i)); Serial.print(")"); Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*"); delay(10); } } // Connect to Wi-Fi using wifiMulti (connects to the SSID with strongest connection) Serial.println("Connecting Wifi..."); if(wifiMulti.run() == WL_CONNECTED) { Serial.println(""); Serial.println("WiFi connected"); Serial.println("IP address: "); Serial.println(WiFi.localIP()); } } void loop(){ //if the connection to the stongest hotstop is lost, it will connect to the next network on the list if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) { Serial.print("WiFi connected: "); Serial.print(WiFi.SSID()); Serial.print(" "); Serial.println(WiFi.RSSI()); } else { Serial.println("WiFi not connected!"); } delay(1000); }
- problems connecting esp32 to sd card
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ESP32 S2 Help
I have 2 ESP32-S2-Saolo-1 's on hand. I am trying to do the example Wifi FTM code that can be found at the following repo: https://github.com/espressif/arduino-esp32/tree/master/libraries/WiFi/examples/FTM
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The Nano ESP32
That has not been my experience at all as a user. ESPHome is even easier than Arduino and I haven’t touched firmware code in years.
The price makes a huge difference when you have dozens of them operating which is trivial with a decent hydroponics and smarthome setup. I also have a dozen boards just sitting idle ready to be called up to replace a failed one or use for a new project because they’re so cheap.
Not to mention the Arduino core is supported officially by ESP32: https://github.com/espressif/arduino-esp32
Who actually uses Arduino in production? Everyone just uses modules (for ESP32) or rolls their own using the Arduino board as a reference.
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Arduino Uno R4 WiFi
They've done a good job of hiding the RTOS from you and making most sketches run fine without porting, but you're still running as a task under the RTOS, yielding between loop() calls[1]. This leads to mysterious timing issues if you aren't aware of it[2]
It doesn't appear that the Arduino core for the Renesas chip is using the RTOS, at least by default -- its main loop is literally doing while (1) { loop(); }, similar to how the AVR core works. [3, 4]
1. https://github.com/espressif/arduino-esp32/blob/72c41d09538663ebef80d29eb986cd5bc3395c2d/cores/esp32/main.cpp#L45
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exit status 1 error not going away! Pls help
https://github.com/lewisxhe/esp32-camera-series/issues/11 may interest you - you need all the files in the same dir, not just the .ino by itself
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Do you have any idea why this program would not work? [ESP32]
I copied all the libraries from here: https://github.com/espressif/arduino-esp32/tree/master/libraries
What are some alternatives?
vala-www - Website of the Vala programming language
esp-idf - Espressif IoT Development Framework. Official development framework for Espressif SoCs.
reduct-mqtt-example - A usage example for Reduct Storage: Keep history of MQTT messages
Tasmota - Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
emqtt - Erlang MQTT 5.0 Client
platform-espressif32 - Espressif 32: development platform for PlatformIO
reduct-js - ReductStore Client SDK for Javascript
WLED - Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi!
mosquitto - Eclipse Mosquitto - An open source MQTT broker
esp32-wifi-penetration-tool - Exploring possibilities of ESP32 platform to attack on nearby Wi-Fi networks.
orbitdb.org - The website for OrbitDB
TinyGo-On-ESP32 - This tutorial will walk you through how to setup Ubuntu 20.10 with Ubuntu Desktop on a Raspberry Pi 4B, install the Espressif ESP-IDF, install Go and TinyGo and finally flash an app to an Espressif ESP32 Microcontroller.