#i2c

Raspberry Pi Bootloader Now: Cyberdecks and Pi handhelds boot to a black screen for seconds. A new firmware extension paints your SPI or I2C panel straight from the bootloader.

I keep seeing Pi Zero + MPU-9250 threads where SDA/SCL look right and i2cdetect is empty — or the...

Never Buy Same L298N: A maker got tired of owning eight identical motor drivers, so he built an Arduino UNO Q inventory tracker that answers one question: do I already have this?

Digital Nose SGP30 Sensor: Your nose gives a yes-or-no answer. An SGP30 gas sensor gives you a number you can plot, and the whole freshness checker is a weekend build.

Three Corroded WiiMotes One: Three bug-infested, battery-acid-ruined WiiMotes went into the teardown. One working controller came out. Here is the cleanup chemistry and the I2C bus behind it.

Adafruit GP8403 I2C DAC: Most DACs cap out at 5V. The GP8403 breakout boosts to a real 0-10V analog output over I2C, which unblocks fan drivers, bias rails and set-point rigs.

Raspberry Pi Zero Clock: A Raspberry Pi Zero and a red 7-segment display make a desk clock that syncs over NTP and never needs setting. Here's how the self-setting build works.

A brass heirloom lamp gets eight ToF sensors, an ESP32, and a Raspberry Pi so it glows and sings when you walk near it.

Project Overview Arduino Nano + TCA9548A I2C multiplexer: this project shows how to...

Project Overview Arduino + PCF8574 I2C expander: This project shows how to use a PCF8574...

I²C Bus in Modern Embedded Systems: Why Engineers Still Rely on It After Four Decades When...

Introduction: The Problem of Real-Time I2C Sensor Visualization Imagine trying to teach...