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The MicroMag3 measures the strength of a magnetic field in three axes (north-south, east-west and up-down). It can be used as a magnetic compass and inclinometer. by Jim Rowe
Instead of seven segments, this LED display module has 14 segments per character, so it can display letters, digits and even a few symbols. It has a built-in I2C serial interface, allowing popular microcontrollers like the Arduino Uno or Nano to drive it easily. by Jim Rowe
This month we’re looking at the tiny ADS1115 that can add up to four high-speed 16-bit analog-to-digital conversion (ADC) channels to almost any microcontroller. It has a built-in I2C serial interface, so it can be easily connected to popular microcontrollers like an Arduino Uno or Nano. by Jim Rowe
Small monochrome OLED display modules have become widely available at a low cost in the last few years. Their I2C serial interface means that popular microcontrollers can easily drive them. by Jim Rowe
This module is designed to form the basis of a liquid pH meter, for testing the acidity or alkalinity of things like the water in fish tanks or swimming pools, or the liquid in a vat when you’re making beer or wine. It comes complete with two pH sensor probes, and can be easily hooked up to an Arduino or other microcontroller to form a pH meter. by Jim Rowe