I’m not so handsome and talented as Harvey Keitel, I actually solve people problems. Quite often people ask me what I do for living, and I always struggle. Am I a programmer ? Web developer ? Software Engineer ? Software Architect ? Technical Lead ? Technical Director ? – I owned each of these title […]
NodeMcu (ESP8266) water level monitor with a voltage sensor
This subject in the theory looks very easy. Just get NodeMcu board, plug sensor from the family of sensors (HY-SRF05, HC-SR04), some kind of voltage sensor and we are good to go. But you can get couple of unexpected issues here. Let’s start from the NodeMcu unit. It’s specific. Weird NodeMcu PIN arrangement First thing […]
Arduino double relay keypad lock
I needed key-less way to open my garage door. Quite often I forgot my remote, so just need something easy to open them without remote. Because I have regular “ring type” opener (click and release to open door) needed something to “click” door for me based on something which I remember (not own – remote […]
USB to TTL / Serial MacOS Mojave
Got bunch of these little f*ckers and couldn’t make them to work with my Mojave fresh install. Previously they were working, and now they are gone. I wasn’t sure what exactly I’ve got. I just run Serial Detect to identify what model do I own: Then I googled driver for MacOS Mojave. Because original website: […]
iframe won’t display content..
There is a website, with iframe. I frame source is correct, but won’t display content of the website. No visible errors. There only small detail in the console: Load denied by X-Frame-Options: https://… does not permit cross-origin framing. Some crazy admin figure out that it’s going to be better… and put some crazy code into […]