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
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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
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 🙂
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
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!
TFT32 product wiki
Working on TFT32 product wiki https://harizanov.com/wiki/wiki-home/tft32/ , I will include Arduino example code soon #IoT #ESP32
TFT32 project e-shop
Just finished setting up a small e-shop for the TFT32 project on my blog grab one from here (I have only a few to sell): https://harizanov.com/product/tft32/
New product TFT32
New product: TFT32 https://harizanov.com/product/tft32/
20 pcs ESP32 TFT project ready
20 pcs #ESP32 TFT project ready 🙂
cURL for ESP32 OTA
Even better idea: switch to cURL for #ESP32 OTA, that will enable OTA over gzip compressed http(s) sources, (s)ftp, ssh #IoT
Compress OTA images to reduce OTA time
Idea: compress OTA images to reduce OTA time, similar to UART flash on #ESP32
GUI to monitor OTA updates to ESP32 TFT project
Added GUI to monitor OTA updates to #ESP32 TFT project
#brexit makes sense
Found this today, now #brexit makes sense. Agree?
3D printed enclosure for ESP32 TFT project
Testing 3D printed enclosure for #ESP32 TFT project #IoT, looks and feels much more finished now 🙂
Stocking tens of TFTs with touch
Stocking tens of TFTs with touch 🙂
SQLite DB on ESP32 on a SPIFFS partition
Experimenting with SQLite DB running on #ESP32, the database itself on a SPIFFS partition. I have some pretty interesting use cases in mind.. https://github.com/siara-cc/esp-idf #IoT
ESP32 graphical GUI resources in shared R/O SPIFFS
Moving #ESP32 graphical GUI resources to dedicated shared R/O SPIFFS partition to reduce main code partition sizes. This also decouples the code from GUI, allows easier branding/styling of the final product, but complicates OTA updates..
RFM69 for a LoRaWAN on my ESP32 TFT project
TO-DO: research project feasibility: swap the RFM69 for a LoRaWAN on my #ESP32 TFT project and use it as SIM-less urban car telemetry/location tracker
Developing connected thermostats
Planning to do a tach talk on topic "Developing connected thermostats" sometime in February, details will follow. http://dev.bg
Three-point resistive touch calibration GUI
Three-point resistive touch calibration GUI is now complete #ESP32 #IoT
20 PCBs for revision 6 of my ESP32 TFT project
20 PCBs for revision 6 of my #ESP32 #TFT project arrived. I think that it is complete now, need to stop shelling money on perfecting it at least 🙂 Now awaiting components delivery to run a small batch SMD assembly. I will have few spares to sell late December
High precision three-point resistive touchscreen calibration
I originally thought resistive touchscreen calibration is a mere interpolation of measured and actual coordinates, little did I know..Just finished implementing high precision three-point resistive touchscreen calibration functionality using TI's guideline http://www.ti.com/lit/an/slyt277/slyt277.pdf
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
ESP32 GUI translation proof of concept works well
#ESP32 GUI translation proof of concept works well. Thanks for the translation tips! #IoT
GUI multilanguage support using Google translation
Working on GUI multilanguage support using Google translation. Hopefully no 'lost in the translation' situations 🙂 . I speak no German, so need help: how do you abbreviate 'Einstellungen', too long to leave as is..
Dumb clocks due to the DST change
Running around the house and cars to adjust dumb clocks due to the DST change. Happy that this archaic madness ends next year in the EU..
Toying with some funky touch GUI icons
Toying with some funky touch GUI icons