Latest Tutorials

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  How to use the STM32 Keyboard Controller with the Arduino IDE

  May 2, 2025

  Introduction Make sure you have read our tutorial on the basics of the STM32 Keyboard Controller, for the layout, wiring, and more. You may not…

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  How to use the Logic level Converter Bi-Directional

  April 2, 2025

  Introduction Many devices and protocols use 3.3V logic including I2C and SPI. This logic level converter converts 5V from microcontroller boards like the Arduino UNO…

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  How to Reflow Solder on Your Stove | With Double Sided PCBs

  February 25, 2025

  If you have ever needed to solder a PCB with lots of tiny SMD components, or even a whole panel, you know how hard it…

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  How to use the STM32 Keyboard Controller

  February 14, 2025

  Introduction The STM32 Keyboard Controller is designed for making handwired keyboards and macropads. It’s main features are 33 I/O pins for 100% keyboards, 128 Kbytes…

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  How to use the Customizable Size Macropad PCB

  February 13, 2025

  Introduction The Customizable Size Macropad PCB is a customizable sized Macropad/keyboard PCB mainly for handwired macropads. Any size can be ordered up to a 5×5…