Препоръчвам сесията на Роско Иванов относно #MQTT load balancing решение —> https://dev.bg/event/iot-mqtt-load-balancing-over-own-architecture/
MQTT in modern automotive cluster architectures
Pleased to see MQTT pop up here and there in modern automotive cluster architectures. Unfortunately can't share more details due to confidentiality.
Secured MQTT channel
Connected my home alarm system to a secured #MQTT channel and am able to arm/disarm/read state remotely via Node-red powered UI #IoT #IoT #arduino #homeautomation Used the code by https://github.com/maragelis/ParadoxRs232toMqtt
Securing MQTT for embedded IoT devices with Mutual TLS
Last-minute preparations for the "IoT Bulgaria Summit 2019" event tomorrow, Sept 14, 2019. My session topic is "Securing MQTT for embedded IoT devices with Mutual TLS Authentication", starting 9:30am. Register for free here: https://www.eventbrite.com/e/iot-bulgaria-summit-2019-tickets-54290900545 The slides I presented are available here: https://drive.google.com/file/d/1FglRqRC5rAlap4HCLp-MgqwR1gnZMIVc/view?usp=sharing
mqtt-explorer.com looks quite promising
https://mqtt-explorer.com/ looks quite promising, I need to take a closer look #MQTT #IoT
Securing MQTT for embedded IoT devices with Mutual TLS
I'll be speaking at the "IoT Bulgaria Summit 2019" community event this September, session topic "Securing MQTT for embedded IoT devices with Mutual TLS Authentication". Use this opportunity to chat with me on anything IoT. https://www.eventbrite.com/e/iot-bulgaria-summit-2019-tickets-54290900545?utm-medium=discovery&utm-campaign=social&utm-content=attendeeshare&aff=estw&utm-source=tw&utm-term=listing @Eventbrite
ESP32 serial log messages to MQTT
Implemented option to send a copy of the ESP32 serial log messages to MQTT; Makes it so much easier to debug remote nodes. Literally takes one line of code, look up esp_log_set_vprintf. Next is to provide API to change the log level runtime so I can focus on the desired component
128 KB limit for MQTT payload size for AWS IoT
TIL of the 128 KB limit for MQTT payload size for AWS IoT. Any publish request that contains payload larger than this limit will be rejected and result in a disconnect. Kind of odd, makes it difficult to transport large payloads e.g. frames from cameras or OTA files over AWS IoT.
MQTT rate limiter middleware
Working on MQTT rate limiter middleware, it will add an extra layer of security to my already oversecured broker.
JSON based access policies to my Mosca-based MQTT broker
Implemented JSON based access policies to my Mosca-based MQTT broker, decision to allow or deny publish/subscribe is now based on the presented client certificate's CN/O/OU/L fields. I think it is pretty safe to say I now run miniature AWS IoT clone 🙂
MQTT certificate based mutual authentication
Implemented #MQTT certificate based mutual authentication for my home automation with access policies for publish/subscribe, much like Amazon AWS #IoT, only #DIY . It is now much more secure #esp32 #mosca Added certificate revocation list functionality. Took extra effort to make it work without MQTT broker restart. Next is profivioning API for the nodes
ESP32 OTA firmware update using compressed firmware image over HTTP (s) / MQTT (s)
ESP32 OTA over 2G links kept timing out, so I push compressed firmware images over HTTP(s)/MQTT(s) instead – smaller, and far more reliable.
ESP32 OTA firmware update using MQTT over SSL
How my ESP32 nodes do OTA firmware updates over MQTT with SSL – a firmware notifications topic tells them when a new version is out.
ESP32 OTA using MQTT over SSL
#ESP32 OTA using #MQTT over SSL as transport and Node-Red as provider A short write-up of this here: https://harizanov.com/2019/01/esp32-ota-using-mqtt-over-ssl-as-transport-and-node-red-as-the-bin-image-provider/
MQTT-ed my Christmass tree lights using TFT32
MQTT-ed my Christmass tree lights using TFT32 powered touch control. It sends Tasamota flashed Sonoff S20 commands over MQTT using #Arduino #littlevgl #ESP32 #TFT source code: https://github.com/mharizanov/TFT32/tree/master/examples/gui/mqtt_controller Buy TFT32 https://harizanov.com/product/tft32/ Merry Christmas!
ESP32 OTA over MQTT TLS
Working on native #ESP32 OTA over MQTT (TLS), the use case is that I have devices behind restrictive firewalls that block outgoing HTTP(S) connections but allow MQTT over TLS
PCB revision for the ESP32 RFM69-to-MQTT gateway
Working on a PCB revision for the #ESP32 RFM69-to-MQTT gateway with TFT display. Added a piezo buzzer, htu21d TH sensor and a LDR for smarter screen dimming.
Prototype PCB for the RFM69 to MQTT IoT gateway
Prototype PCB for the RFM69 to MQTT #IoT gateway with TFT, RTC, atsha204 encryption and neopixel is ready, works well. Excited 🙂
RFM69+BLE-to-MQTT ESP32 gateway with TFT status display
My new home automation IoT ecosystem architecture is taking shape. Now working on a PCB for a RFM69[+BLE] -to-MQTT ESP32 gateway with TFT status display. Next is low power, battery-operated wireless status display with e-paper and RFM69+atmega328 + more..
ESP32 + RFM69 to MQTT IoT gateway
Experimenting with #esp32 + #rfm69 to #MQTT #IoT gateway, works well
BLE beacons to MQTT
Got some BLE beacons to fiddle with. Part of BLE beacon to MQTT #esp32 #IoT project
ESP32 BLE iBeacon to MQTT proof of concept bridge project
#ESP32 BLE iBeacon to #MQTT proof of concept bridge project.. #IoT
RFM69 to MQTT gateway using ESP8266
An RFM69 to MQTT gateway on the ESP8266 – Andrey Balarev and I wrote the missing RFM69 driver to bridge sub-GHz nodes to Wi-Fi.
WiFi IoT 3 channel relay board with MQTT and HTTP API using ESP8266
My ESP8266 relay board: three solid state relays, MQTT + HTTP API, DHT22/DS18B20 sensor support – an open WiFi IoT switching platform.
MQTT topic tree structure improvements
Redesigning my MQTT topic tree structure – research, Tinkerman’s article, and the layout I settled on for my home automation.
NodeRED RFM2Pi to emonCMS gateway
Replacing my python gateway script with Node-RED: RFM2Pi packets decoded and forwarded to emonCMS in a visual, easy to extend flow.