Arduino

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  Arduino tachometer with optical gauge

  I need a tachometer to calculate some mechanisms. For example, to calculate the speed of a robot vacuum cleaner, you need to know the rotation speed of the electric motor and, based on this, calculate the gear ratio of the gearbox.
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  Garland with a heart on February 14

  Soon February 14, Valentine's Day, the Christmas garland on the address LEDs still hangs on the window. I decided to diversify it a bit. I wrote a simple script and added a colorful heart to the firmware.
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  Cool garland like Alex Gaiver (WS2812)

  This cool garland is assembled according to the design of Alex Hyvera using Arduino and an address LED strip. The garland has many interesting effects, a running text, several games and the ability to control all this from a mobile phone.
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  CNC homemade v1.0

  This is my first CNC machine assembled with my own hands from available materials. The cost price of the machine is about $170.
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  Robot vacuum cleaner homemade

  This article is about how I collect my robot vacuum cleaner. There are a lot of photos and videos for those who also have such an idea.