The Problem
Finding accurate pinout information for microcontrollers shouldn't be this hard. Whether you're a beginner wiring your first LED or an experienced engineer prototyping a new design, you've probably wasted hours jumping between blurry pinout images, dense 500-page datasheets, and conflicting forum posts just to figure out what a single pin does. Static diagrams can't answer questions, and searching through technical manuals for basic info like "which pins support PWM?" or "is this pin 5V tolerant?" is tedious and error-prone. Every new board means starting this frustrating process all over again.
The Solution
I'm building a different approach—a complete site of interactive pinout explorer web apps that work like a conversation: just click any pin and instantly see its functions, voltage, limitations, and programming notes.
Today, I'm releasing my third tool: the Arduino Nano Pinout Explorer.
It joins the ESP32 Pinout Explorer and ARDUINO UNO PINOUT EXPLORER I built earlier. All three are free, open-in-any-browser web apps that work beautifully on mobile phones, tablets, and PCs—I tested them myself, and navigating on a phone feels just as natural as on desktop.
My vision is to grow this into a comprehensive library covering not just popular development boards, but also individual microcontroller ICs like the ATmega328P, PIC, STM32, and Raspberry Pi, and eventually other component categories like power management ICs. That's the long-term plan—one interactive reference to rule out the datasheet digging.
Whether you're a student learning electronics, a hobbyist building weekend projects, or a professional developer switching between boards, these tools give you one less thing to memorize and one less reason to keep ten browser tabs open.
