Arduino - Liore Shai

Turning a $10 kitchen scale into a WiFi smart scale for Home Assistant

Over the years I've seen a few posts on Reddit demonstrating the use of a load cell with an internet-connected microcontroller as a weight-based filament sensor for 3D printing. I decided to embark upon a similar project, retrofitting a $10 kitchen scale.

Arduino

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.

Arduino

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.

Arduino

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.

Arduino

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!

Arduino

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

Electronics

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.