!!! WARNING: This project deals with mains power and high current !!! Please be careful if you wish to replicate any of its functionality and never work on a PCB or any open wires that are connected to the mains ! Author has no responsibility for your safety and wellbeing, so please take care of yourself. How it works …

My son has a cat. And I've become very curious about the cat's feeding and toilet habits. Mainly I'm interested in how long does it take him to go to the toilet after eating as I've noticed a pattern: At first he goes to the kitchen, eats and then runs around the house wrecking havoc for some time and then goes to the …

In a previous post I've described how to build a Weather Station based on ESP8266 chip and various breakout boards you can buy e.g. on Aliexpress. In this post, however I'll share with you how I built a standalone PCB boards containing all the required components. To recap - this is a ESP8266 based Weather Station, …

Ever since I started playing around with ESP modules I wanted to measure weather conditions in multiple location at home, friends, etc. The best way to achieve that would be to build a station that gathers various environment parameters and publishes them somewhere. That is what I've done. The very first prototype was …

I was always fascinated with balancing robots and wanted to build one myself. Some time ago I started collecting IMU, arduino boards, wheels, motors for other wheeled robots and one day decided to build a balancing robot instead. I've used wheels from old four wheel drive robot that used mouse sensors for odometry and …

As I've mentioned in the last blog post, I was trying to build a four wheel drive robot using arduino that utilizes two A3080 mouse sensors for odometry. Sadly that project never got finished and I disassembled the robot and built a balancing robot instead. However later I decided to not abandon the four wheel drive …