Silicon Pen — Penning Down the Language of Electronics

Latest Post

⚡ LATEST RELEASE • 2026-11-01

ESP32 Pinout Explained: GPIO, ADC, PWM, SPI and I²C

Your practical guide to understanding ESP32 pins, choosing the right GPIOs, and connecting your first sensors, displays, and actuators.

See More

ESP32 Explained: What It Is and What You Can Build With It

From a tiny microcontroller to wireless devices, robotics, and even arcade games — let's explore the ESP32.

Loop Conditions & Decisions in Embedded Systems

How Arduino Uses Logic to Think, React, and Make Real Decisions

Variables, Functions & Clean Code Structure

How to Organize Your Arduino Programs So They Stay Clean, Simple, and Easy to Fix

Serial Monitor: Your First Debug Tool

The Window That Lets You See What Your Arduino Is Really Doing

Delays vs Non-Blocking Code millis()

Why delay() Freezes Your Arduino — and How millis() Frees It

Understanding PWM & LED Fading

How Arduino Fakes Analog Output Using High-Speed Digital Switching

View all articles →

About Silicon Pen

A quick intro to who I am, what Silicon Pen is about, and why this corner of the internet exists. For the full story, visit the dedicated About page.

References

A growing library of datasheets, papers, books, and tools I keep referring to when writing deep-dive articles. The full References page collects everything in one place.

Series

Long-form series like Rant Electronics, project logs, and story arcs live here. The Series page keeps every multi-part journey organized so you can follow from Episode 1.

⚡ COMING SOON

Hardware Lab & Gear

Handcrafted custom PCBs, assembled hardware kits, and official engineering apparel. Every product comes with free open-source documentation, companion schematics, and clean code on the blog.

Penning Down the Language of Electronics.