In one of my arduino projects I needed a keyboard with more than 4x4 keys and I wanted to use less pins. I deside to use I2C bus for connection my future keyboard to arduino, because I2C needs only 2...

Do You remember the games on smartphones where You must have to guess the word wich unites four pictures? How many hours I lost in such games. And now I want to repeat this game in Telegram. Let's sta...

Hi, All! My name is Roman and I'm glad to wellcome You in my personal blog. This is my next attempt to collect all my projects in one place, first of all not to forget and suddenly it may be interesti...