Experimenting with gauges designs #ESP32
Experimenting with gauges designs


Experimenting with gauges designs #ESP32

Had to inspire some young people into the world of embedded, wired up a pong console as a starter

Working on a PCB revision for the #ESP32 RFM69-to-MQTT gateway with TFT display. Added a piezo buzzer, htu21d TH sensor and a LDR for smarter screen dimming.
Interesting http://esptool.py wrapper that lets you use RTS/CTS for #ESP8266 / #ESP32 auto-reset on firmware flashing instead of the usual RTS/DTR method. Saves a few components thus reducing project cost. Description and code here https://github.com/jimparis/esptool-ftdi

Running TFT demo on my #ESP32 gateway project

Prototype PCB for the RFM69 to MQTT #IoT gateway with TFT, RTC, atsha204 encryption and neopixel is ready, works well. Excited 🙂

My new home automation IoT ecosystem architecture is taking shape. Now working on a PCB for a RFM69[+BLE] -to-MQTT ESP32 gateway with TFT status display. Next is low power, battery-operated wireless status display with e-paper and RFM69+atmega328 + more..

My wife left her iPad unattended for a few minutes only to find our 8 y/o daughter installing Sims and €350 worth of add-ins.. her bank card got blocked by our bank for suspicious activity, I'm on the phone with @AppleSupport trying to cancel the purchases 🙂

Unusually cold summer where I live, temperatures reaching max 30*C on only two days so far… contrary to the heat wave in western Europe and Asia #GlobalWarming

Added TFT support to a RFM69+BLE<–>MQTT gateway PoC project. So many ideas, so little free time to materialize them..

It’s 2010. You’re an eager investor presented a choice between two stocks: Google or Domino’s Pizza. Where do you put your money? You should have gone with your gut. https://www.theatlas.com/charts/S18QCJyhe

Testing waveshare 1.54" module with a partial update, pretty fast compared to the 2.7" two-color version with 15 seconds refresh time.. https://www.waveshare.com/wiki/1.54inch_e-Paper_Module #IoT
DIY swimming pool solar heater https://harizanov.com/?p=4476 #IoT #DIY #green #solar

We have a 4.88m x 2.74m x 1.22m (13m³) Bestway swimming pool in the backyard. We only use the pool when the pool water temperature is > 25°C, but it only happens if there are intensive sunshine and high ambient…

Received my Elements of AI certificate today. A great online course, by the University of Helsinki and Reaktor #elementsofai #AI

Toying with a two color e-paper display, amazing technology.. Thinking of low power battery display applications #iot

Experimenting with #esp32 + #rfm69 to #MQTT #IoT gateway, works well

Few photos from my tech talk on "Building low power battery operated #IoT nodes", thanks to those that attended

Preparing a hot water powered barebone #arduino running on internal oscillator and blinking a LED. Fun and educational #IoT
Reminder: If you are in Sofia and working in the #IoT area –> you are invited to meet me in person this Wednesday; Sign up using the below link 🙂 https://x.com/mharizanov/status/973318287974117376

Found an energy harvesting board that I designed ages ago in my drawer. Never ceases to amaze me how this works, made a video of it working off a peltier element and a t delta of 10 degrees C. Thinking of creating harvestduinoRF? #WearableTech #IoT

My CV as a word cloud

Fiddling with noname #esp8285 (not esp8266!) smart plug. Build quality is better than Sonoff S20, relay rated 16A. Difficult to reflash though as no header with TX/RX is exposed
Not that I used it much, but I just #DeleteFacebook over privacy concerns
Got featured on @hackaday .. again 🙂 https://x.com/hackaday/status/976639868263542785

#darkflow running on #RaspberryPi 3B+ handles well image recognition with light yolo weights

Grabbed a Raspberry Pi 3 B+
New post: Enhancing my ordinary security cameras with AI https://harizanov.com/?p=4439 #IoT #AI

Artificial Intelligence is quickly becoming an important ingredient for IoT projects’ success, a requirement for unlocking its full potential and providing a competitive edge to those that embrace it. AI naturally integrates into existing connected sensor/actuator networks and immediately adds…

I guess I need an exabyte-sized HDD to fit this raspberry pi image.. recommendations? #RaspberryPi

I will be doing a tech talk on topic “Hardware and firmware considerations when designing low power battery operated wireless edge nodes for Internet of Things applications” at an event organized by DEV.BG. Join me on April 18th, starting 19:15…

I will be doing a tech talk on topic "Hardware and firmware considerations when designing low power battery operated wireless edge nodes for Internet of Things applications". Join me on April 18th, starting 19:15 @ IT step academy https://goo.gl/Txgy7K #IoT