This interactive embedded systems reference tool provides a detailed pinout explorer for three popular microcontroller and single-board computer platforms — the Raspberry Pi 3, Arduino Uno, and Teensy 4.1 pinout explorer. The Raspberry Pi 3 section visualizes its full 40-pin GPIO header alongside onboard components like the BCM2837 quad-core processor, BCM43438 WiFi/Bluetooth chip, USB ports, HDMI, CSI camera connector, and microSD slot, with each pin clickable to reveal its voltage, current rating, supported protocols, and usage notes. The Arduino Uno section covers its digital and analog I/O pins, PWM-capable outputs, hardware UART, SPI, and I2C interfaces built around the ATmega328P, making it ideal for beginners and rapid prototyping. The Teensy section highlights its significantly richer feature set — including multiple hardware serial ports, SPI and I2C buses, analog inputs, DAC outputs, and high-resolution PWM — all packed into a compact form factor suited for audio, USB HID, and performance-critical applications. Across all three boards, users can filter pins by function, click individual pins for detailed specifications, and use the colour-coded legend to quickly distinguish power, ground, communication, and general-purpose pins.
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Board Explorer
