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
DEV.BG tech talk #3
Notes from my DEV.BG tech talk on the ESP32 IoT control hub – over 100 people signed up, sadly no recording was allowed.
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 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 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
Compressed binary OTA firmware update for ESP32
Testing compressed binary OTA firmware update for #ESP32, similar to http://esptool.py's serial flash compression. Speeds up OTA by reducing the size of the image transfer over a sometimes unreliable/slow internet connection.. works over HTTPS and MQTTS #IoT
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/
Dynamic frequency shifting, modem light sleep and TFT
Experimenting with dynamic frequency shifting, modem light sleep and TFT dimming to bring down power consumption to roughly 60mA while maintaining Wi-Fi connection to MQTT #ESP32
Battery-free sensor tag gathers energy from radio
Battery-free sensor tag gathers energy from radio frequencies https://www.engadget.com/2019/01/15/wiliot-battery-free-sensor-tag/ via @engadget
Universal USB interface cable
Got this universal USB interface cable today. Is the phone charger/interface hell repeating again?
Tweeting in base64 is any good
SnVzdCB3b25kZXJpbmcgaWYgdHdlZXRpbmcgaW4gYmFzZTY0ICBpcyBhbnkgZ29vZA
New toy ESP32 esp32-cam
Received a new toy #ESP32 esp32-cam
Thoughts on time/date management on IoT nodes
Why IoT nodes need accurate time: SSL certificate validation, scheduling, logs – and how I handle NTP, timezones and DST on mine.
Thoughts on time/date management on IoT nodes
New post: Thoughts on time/date management on IoT nodes https://wp.me/pawL3e-1f0
DIY IoT control hub project
Join me on Feb 5 @DEV.BG Work & Share Coworking Space, 15-17 Tintyava str, Sofia where I will present a DIY #IoT control hub project I created. Event details: https://tinyurl.com/ya3egvup #ESP32 #homeautomation Got a notification that 100 already signed up for the event; Looking forward to a great networking tomorrow 🙂
TFT32 Wi-Fi configuration GUI
A video of the TFT32 Wi-Fi provisioning GUI – touch-based initial setup, one of the trickier parts of any IoT product, work in progress.
Mediafire UM34C USB tester
Just received a Mediafire UM34C USB tester. First impressions are positive, might post a review later And of course I meant it is a RUIDENG UM34C 🙂
WiFi setup using touch GUI
WiFi setup using touch GUI makes the initial setup of an IoT device soo easy #LittlevGL #ESP32
TFT32 – ESP32 based IoT control hub/gateway with TFT, RFM69 and more
TFT32 is my ESP32 based IoT control hub/gateway with touch TFT and RFM69 – and why I want less cloud in my home automation.
TFT32 ESP32 based IoT control hub gateway with TFT
New post: TFT32 – ESP32 based IoT control hub/gateway with TFT, RFM69 and more https://wp.me/sawL3e-tft32
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!