This made me laugh, I have seen folks actually think like that #startup #ideas #dilbert
Folks actually think like that
Provisioning ESP32 devices for mutual TLS authentication
Just recorded a new video: Provisioning ESP32 devices for mutual TLS authentication for MQTT using own PKI https://youtu.be/7qTT9EPCdCw #IoT #mTLS #MQTT #security #PKI #DIY #eclipse
How-to video on how to use self-created CA
Made a "how-to" video on how to use self-created CA to secure Node-RED installation with mutual TLS authentication in 12 minutes: https://www.youtube.com/watch?v=oRCpXEj236s&feature=youtu.be #IoT #nodered #tls #mtls #security
Jupiter next to the moon
Jupiter quite visible today, just next to the moon where I live. Feels alien to see it like this..
AWS IoT pricing calculator
Checking an AWS IoT pricing calculator, running a 10K IoT fleet costs $1.8K per year. This is not insignificant. Link to the calculator: https://d1.awsstatic.com/IoT/assets/AWS_IoT_Core_Pricing_Calculator.fcc37410fa03431c28b59d8509f1b4e370c88402.xlsx
Node-RED with mutual TLS authentication
Secured my #Node-RED with mutual TLS authentication through my own CA and self-generated certificates; I have to present a client certificate in order to be allowed to use Node-RED.
My dog meets Google’s AR tiger in the garden
My dog meets Google's AR tiger in the garden.. try it yourself, google for "tiger" on your phone, then "view in 3D"->"view in your space"
Basic PKI PoC
I need a node.js guru volunteer to work with me on creating basic PKI PoC that provisions #ESP32 devices with client certificates; node-forge looks right for the purpose. I have the complete solution architecture figured, just need a node.js guru that can code it for free 🙂 Couple volunteers already, thanks @eliofilipe and @MrQinEL ;…
x.509 certificates to dedicated ESP32 partitions
I now load x.509 certificates to dedicated ESP32 partitions rather embedding into the code via COMPONENT_EMBED_TXTFILES; This helps decouple the code from provisioning the device with CA and client certificate+key; Still working on PKI to provision the certificates at flash time
Wallet with IDs, credit cards
Saw someone drop his wallet while entering a shop (pretty full with cash btw) and ran up to him to return it. Feels good to help, I have been in a position where I've lost wallet with IDs, credit cards and know what it means..
mTLS to secure IoT solutions
Sharing some thoughts on using mTLS (mutual TLS authentication) to secure IoT solutions in a blog post: https://harizanov.com/2019/06/using-mtls-to-secure-iot-solutions/
Using mTLS to secure IoT solutions
Notes on securing IoT devices with mutual TLS (mTLS) – what it adds over one-way SSL and how I apply it in my own projects.
30 active IoT devices at home
Counted 30 active IoT devices at home, 90% of them created by me. What's your count?
Run a C Language Interpreter on Your ESP32
This is pretty interesting: Run a C Language Interpreter on Your ESP32 https://www.codeproject.com/Articles/5061494/Run-a-C-Language-Interpreter-on-Your-ESP32
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-S2 secure Wi-Fi MCU
@EspressifSystem I'd love to get my hands on the #ESP32-S2 , count me in for a tester https://www.espressif.com/en/news/espressif-announces-%E2%80%A8esp32-s2-secure-wi-fi-mcu
Come see me
Come see me #security #infosec #passwords
DIY sliding door opener
A short video blog post of my DIY sliding door #Iot opener https://harizanov.com/2019/05/iot-sliding-door-opener/ https://youtu.be/BPzyOmaaLY0 #esp8266 #DIY #MQTT #smarthome #homeautomation
IoT sliding door opener
My Beninca BULL 5M sliding gate is now on the IoT – ESP8266 + MQTT lets me open, close and check the gate state from my phone.
The Dunning-Kruger effect
The Dunning-Kruger effect is a real thing, I get a reminder every now and then
Demo of pairing a remote wireless sensor
Demo of pairing a remote wireless sensor, RFM69 based, with main control hub https://youtu.be/r7twp9cV2z4 #IoT #ESP32 #rfm69 #homeautomation
Self-made esp8266 gate controller
Installed a self-made esp8266 gate controller with magnetic switch status sensor, I can now open/close/read the statate of the gate from anywhere. #IoT #esp8266
Pull-ups on I2C lines
Forgot to add pull-ups on I2C lines, retrofitted resistors save the day
2.4GHz vs 433MHz range tester
Wrote a 2.4GHz vs 433MHz range tester: sending espnow 2.4GHz and RFM69 @ 433MHz from master to a slave node. 433MHz range is much better from what I can see but I am comparing apples to pears here..
Touch GUI to control my paradox home alarm
Working on touch GUI to control my paradox home alarm
Human-Machine Interface (HMI) modeling and implementation
New post: Human-Machine Interface (HMI) modeling and implementation using event-driven finite-state machines https://wp.me/pawL3e-1i8
Human-Machine Interface (HMI) modeling and implementation using event-driven finite-state machines
Modeling touch HMIs as event-driven finite-state machines instead of coding prototypes by hand – my approach to GUI behavior design.
3.5″ TFT
New post: Experimenting with a 3.5″ TFT https://wp.me/pawL3e-1hq
Experimenting with a 3.5″ TFT
Testing the TFT32 ESP32 project on a 3.5″ ILI9488 480×320 resistive touch TFT – mostly a matter of adapting the display drivers.
Testing ILI9488 3.5″ TFT clocked @ 40Mhz
Testing ILI9488 3.5" TFT clocked @ 40Mhz in 4 wire SPI mode with DMA, looks pretty responsive. #LittlevGL #ESP32 https://youtu.be/HVVAo9QdOfM
ESP32 + 480*320 ILI9488 TFT with touch + LORA
It lives! #esp32 + 480*320 ILI9488 #TFT with touch + #LORA (not yet populated on the PCB) + RTC + piezo buzzer
Hand soldering 40 pin 0.5mm pitch FPC
Hand soldering 40 pin 0.5mm pitch FPC isn't my favorite thing to do, but here it is