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
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
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
3.5″ TFT
New post: Experimenting with a 3.5″ TFT https://wp.me/pawL3e-1hq
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
Automated GUI load tests
Running automated GUI load tests, found couple memory leaks that were otherwise slipping
Excellent free guide by Michael Barr
I have some reading to do for tonight, excellent free guide by Michael Barr
Prototype PCBs for ESP32 3.5″ TFT IoT control hub
Prototype PCBs for ESP32 3.5" TFT IoT control hub project
People-Tools-Processes
New post: People-Tools-Processes https://wp.me/pawL3e-1hk
Done is better than perfect
Reminder to self: done is better than perfect.
Real-time 3D rendering on ESP32
Toying with real-time 3D rendering on ESP32, adapted @elect_gombe 's code to my hardware setup
My solar water heater (220l) reached 79*C
My solar water heater (220l) reached 79*C yesterday #summeriscomming
Tech talk #3
New post: http://DEV.BG tech talk #3 https://wp.me/pawL3e-1gi
Professional enclosure design for my ESP32 control hub
Considering professional enclosure design for my #ESP32 control hub/thermostat project #IoT #homeautomation
IoT presentation at dev.bg
Was crowded at my IoT presentation @ http://dev.bg today, thank you for attending!
Skype microphone in the background
Hmm.. just got a notification that @skype has been my phone's microphone in the background..
3.5″ TFT+touch version of my IoT control hub project
Drafting a 3.5" TFT+touch version of my IoT control hub project; upgraded to ESP32 WROVER to benefit from the extra PSRAM. Planning on adding LoRa support
IoT е област с голям потенциал
Мартин Харизанов: IoT е област с голям потенциал, но и голяма динамика https://dev.bg/%d0%bc%d0%b0%d1%80%d1%82%d0%b8%d0%bd-%d1%85%d0%b0%d1%80%d0%b8%d0%b7%d0%b0%d0%bd%d0%be%d0%b2-iot-%d0%b5-%d0%be%d0%b1%d0%bb%d0%b0%d1%81%d1%82-%d1%81-%d0%b3%d0%be%d0%bb%d1%8f%d0%bc-%d0%bf%d0%be%d1%82/ via @
3.5″ 480×320 TFT with touch
Bigger is better.. 3.5" 480×320 TFT with touch for a future version of my #ESP32 IoT control hub project
ESP32 OTA firmware update using compressed firmware image
New blog post: ESP32 OTA firmware update using compressed firmware image https://wp.me/pawL3e-1fF #mqtt #iot #esp32 #esp8266 #homeautomation
OTA firmware update resume feature
TODO research feasibility of OTA firmware update 'resume' feature; will pick-up from where last OTA stopped receiving the firmware, so, in case of failed OTA, it will resume from where we left off #esp32 #esp8266 #iot