pubudeux labs
Arduino

  1. 555-Timer Oscillator for Ultra Low-Power Devices

    Using the Astable Multivibrator circuit with a CMOS 555 Timer, power consumption on battery-powered sensors can be drastically reduced to microamps. This guide demonstrates two common circuits that can be used to achieve this.…
    on Arduino Batteries Projects

  2. Homemade Battery-Powered Alexa Smart Speaker

    Using a disassembled Echo Flex device, I made a portable, wireless smart speaker with an integrated phone charger. Aside from being a fun project, it is cool to have a powerful speaker that just integrates with the rest of my Alexa devices.…
    on Arduino Projects Electronics Guides

  3. 5V vs 3.3V: Which is better for Arduino? Logic level and operating voltage for Beginners

    When working with Arduino Microcontrollers or Raspberry Pi boards, which voltage should you use your components? What is the difference between logic level and operating voltage? Let's walk through a beginner's guide to voltage levels in arduino projects.…
    on Arduino Electronics Guides Raspberry Pi

  4. Soldering tiny (SOIC/SO) surface mount ICs in DIY projects

    You can use any SOIC chip in your DIY project without any special equipment. All you need is a cheap breakout PCB and regular soldering iron!…
    on Arduino Electronics Guides

  5. DIY Peloton: Cadence and Resistance Sensors, Speakers - Powered by Raspberry Pi Pico

    DIY Peloton project - created a smart exercise bike with cadence and resistance sensors and a built-in speaker. Powered by a Raspberry Pi Pico…
    on Arduino Guides Electronics Projects Raspberry Pi

  6. Raspberry Pi Pico Neopixel Controller w/ Motion Detection Trigger

    Guide to making a ws2821b LED controller triggered by an infrared motion detector. This is powered by a Raspberry Pi Pico Microcontroller running micropython. Build details and guide + schematic.…
    on Electronics Guides Projects Raspberry Pi Arduino