Forgot to add pull-ups on I2C lines, retrofitted resistors save the day
Pull-ups on I2C lines
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
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 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
New post: Thoughts on time/date management on IoT nodes https://wp.me/pawL3e-1f0