Updated a 2014 wireless power consumption monitor project of mine to be compatible with my latest generation project hardware and backend #homeautomation #IoT #esp32
2014 wireless power consumption monitor project
Samsung smartthings capable esp32 smart switch
Experimenting with #Samsung #smartthings capable #esp32 smart switch using their SDK and ESP-IDF. There is no need for a hub, works directly with the Smart Things app.
Raspberrypi flightradar24 monitor using PiTFT and Chromium
#raspberrypi #flightradar24 monitor using @adafruit 3.5" PiTFT and Chromium in kiosk mode
Meet the PS Thermo
Meet the PS Thermo – my smart thermostat with a TFT32-based control hub and sub-GHz RF wireless sensors, the successor to BBoilRF.
Air quality sensor
I just activated a http://luftdaten.info air quality sensor, will be contributing from my home in the suburbs that was missing air quality info. Where I live I measure PM2.5 to be 7.8 µg/m³, but overall air quality in Sofia right now is outrageous.
Simulink modeled software component into an ESP32 project
Successfully integrated a rather complex Simulink modeled software component into an ESP32 ESP-IDF/Eclipse project via code generation. Pretty impressed with the outcome and how fast the SWC was developed this way. #esp32 #simulink #freeRTOS #embedded
FreeRTOS CPU load monitoring
Added FreeRTOS CPU (both cores) load monitoring (for power management strategy implementation) from my TFT32 project. Pleased to see how efficient the code is, CPU load at 8% and 10% respectively for core 0 and 1..
Booting Linux on ESP32
Booting Linux on ESP32? https://www.reddit.com/r/esp32/comments/dtlj7n/booting_linux_on_esp32_realtime_video/?utm_medium=android_app&utm_source=share
Arduino within Eclipse C/C++ IDE
I rarely use Arduino nowadays, one reason is its amateur-ish IDE. Thankfully there are alternatives like using it within Eclipse C/C++ IDE, which partially deals with my Arduino intolerance in the rare cases I resort to it.
WiFi AP association timeout on an ESP32 project
Had to increase a WiFi AP association timeout on an ESP32 project, it was failing to connect in <15 sec. What is the recommended time to wait before considering a connection attempt timed out?
Software low-pass filter on a remote humidity sensor’s
Added a software low-pass filter on a remote humidity sensor's readings, the result is quite obvious
Injection molded enclosure for the ESP32 based thermostat
Injection molded enclosure for the ESP32 based thermostat controller, looks and feels pretty neat #IoT
ESP32 gateway with a wireless 433Mhz fire alarm
Interfacing an ESP32 gateway with a wireless 433Mhz fire alarm, see it in action https://youtu.be/4-7YdF4ifOU #IoT #esp32 #smarthome
49mA with display off and maximum wifi power savings
49mA with display off and maximum wifi power savings + DFS enabled while maintaining WiFi and 433Mhz connections to low power battery sensors Note that this is at 5.12V or roughly 80mA on 3.3V; CPU speed varied between 160 and 80Mhz as needed
Uploading firmware and other partition items
Uploading firmware and other partition items like CA/client cert, cert key, NVS partitions, espfs images using @SpritesMods's esphttpd project https://github.com/Spritetm/esphttpd #ESP32
GUI to show serial debug output to the TFT
Added GUI to show serial debug output to the TFT https://youtu.be/19-C5f2eHmQ #esp32 #iot #lvgl #embedded
ESP32 emulation in QEMU
Can't think of a reason why anyone would need an ESP32 emulation in QEMU, but TIL that it exis https://github.com/Ebiroll/qemu_esp32
Three ways of provisioning an ESP32 with WiFi credentials
Three ways of provisioning an ESP32 with WiFi credentials: smartconfig, AP captive portal, and GUI: https://www.youtube.com/watch?v=UNdZGgIRWVo
ESP32 based thermostat controller/gateway project with TFT
It's close to a year since I started working on my ESP32 based thermostat controller/gateway project with TFT display. It now has 120K+ lines of code (components included), work done entirely at nights/weekends. What's the longest you have worked on a passion project? #IoT https://x.com/mharizanov/status/1027868368500666368
3D printed enclosure prototype for the ESP32 based IoT
3D printed enclosure prototype for the ESP32 based IoT thermostat controller project I have been tweeting about recently #esp32 #MQTT #smarthome #homeautomation #IoT #3Dprinting #design #Mechanical Need to adjust the UI for the display cover curves..
Pairing a and controlling with a touch GUI a 433Mhz
Pairing a and controlling with a touch GUI a 433Mhz wireless relay #IoT #esp32 #lvgl
ESP32 generated QR code with AP credentials
Using ESP32 generated QR code with AP credentials -> captive portal to configure the WiFi STA configuration in 5 seconds.. #IoT Isn't that cool?
Dynamic QR generation on ESP32
Experimenting with dynamic QR generation on ESP32. Useful for product registration with serial number by the end user witn an app #IoT
Arduino’s millis() overflows every approx. 50 days
Reminder to self: Arduino's millis() overflows every approx. 50 days, use if ((unsigned long)(millis() – previousMillis) >= interval) instead
Wireless battery temperature and humidity sensor revision
This is my latest wireless battery temperature and humidity sensor revision. It is optimized for long range (200m) and long life (2+ years sending once a minute). To be used with the display hub and relay actuator I tweeted recently #IoT #smarthome
16A relay actuator with 433Mhz RFM69
Designed a high quality 16A relay actuator with 433Mhz RFM69, two separate DS18B20 plugs, option for RTC and SPI flash. Will be used with the thermostat controller I tweeted yesterday. #IoT #smarthome #arduino
OTA server requires client certificate
Updated my OTA server to require client certificate to be presented before providing the firmware binary. This way the binary is kept away from curious eyes, and only provided after mutual TLS authentication proves the asking party is who they say they are. #IoT #OTA #Security
PCB for ESP32 based smart thermostat controller project
PCB for ESP32 based smart thermostat controller project with touch bring-up success. The enclosure is in the works. Feeling satisfied. #IoT #smarthome
ESP32 serial log messages to MQTT
Implemented option to send a copy of the ESP32 serial log messages to MQTT; Makes it so much easier to debug remote nodes. Literally takes one line of code, look up esp_log_set_vprintf. Next is to provide API to change the log level runtime so I can focus on the desired component
Arduino code in production
I am frequently contacted by folks who were advised to use Arduino to build commercial product and are now running into the full spectrum of issues related to using a rapid prototyping platform in production. Someone's giving them the wrong advice and that costs a lot. Also using Arduino code means all of your object…
ESP32 OTA rollbacks
Implemented ESP32 OTA rollbacks if the new firmware crashes within 45 seconds of first boot, doesnt manage to connect to MQTT or the device enters degraded operating mode due to failed hardware initialization. This gives me a peace of mind when pushing mass OTA updates. #IoT
Continuous Delivery setup for ESP32 IoT projects
Made a short video on my Continuous Delivery setup for ESP32 IoT projects using Node-RED https://youtu.be/paC_rVziIMQ #IoT #MQTT #OTA #ESP32