Pinouts & Pin References
for Dev Boards & MCUs.
Pinout diagrams, schematics, and specs for Arduino, ESP32, Raspberry Pi, STM32 & Teensy.
All Boards, Chips & Connectors
Development platforms, microcontrollers, ICs and standard interfaces
Arduino Mega 2560 R3
Microcontroller board based on the ATmega2560 featuring 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 hardware UART serial ports, a 16 MHz crystal oscillator, USB connection, a power jack, an ICSP header, and a reset button.
Raspberry Pi Pico W (Wi-Fi & Bluetooth)
High-performance wireless microcontroller board built around the RP2040 dual-core ARM Cortex-M0+ processor and an Infineon CYW43439 wireless chip supporting 2.4GHz 802.11n Wi-Fi 4 and Bluetooth 5.2 (BLE). Features 26 multifunction GPIOs, 3 ADC channels, 2MB onboard flash, and 8 Programmable I/O (PIO) state machines.
Seeed Studio XIAO ESP32-C3 Development Board
Thumb-sized (21 x 17.5 mm) IoT development board powered by the Espressif ESP32-C3 32-bit RISC-V single-core processor at up to 160 MHz. Features 2.4GHz Wi-Fi 4, Bluetooth 5.0 (BLE), integrated battery charging management, USB-C, and 14 breadboard-friendly GPIO pins.
Arduino Nano V3
Compact, breadboard-friendly 8-bit AVR development board based on the ATmega328P with 30-pin dual-inline layout, mini-USB / USB-C, 8 analog inputs, and onboard 5V regulator.
Raspberry Pi 5
Latest single-board computer featuring a 2.4 GHz 64-bit quad-core ARM Cortex-A76 processor (Broadcom BCM2712), dual micro-HDMI, Gigabit Ethernet, USB 3.0, PCIe 2.0 x1, and 40-pin GPIO header.
Arduino Uno R3
The flagship microcontroller board based on the ATmega328P featuring 14 digital I/O pins (6 PWM), 6 analog inputs, 16 MHz quartz crystal, USB connection, power jack, and ICSP header.
Raspberry Pi Pico (RP2040)
High-performance microcontroller board built around the Raspberry Pi RP2040 dual-core ARM Cortex-M0+ processor at 133 MHz with 2MB QSPI flash, 26 multifunction GPIOs, 3 ADCs, and Programmable I/O (PIO).
Arduino Pro Mini (ATmega328P)
Minimalist 8-bit AVR microcontroller board based on the ATmega328P running at 16 MHz (5V) or 8 MHz (3.3V) with no onboard USB, optimized for permanent installation and low power.
ESP32 DevKit V1 (38-Pin)
Widely used 2.4 GHz Wi-Fi and Bluetooth development board powered by the dual-core Tensilica Xtensa 32-bit LX6 microprocessor with 38 total pins.
ESP32-S3 DevKitC-1 (44-Pin)
Next-generation 2.4 GHz Wi-Fi and Bluetooth 5 (LE) development board powered by the dual-core Xtensa 32-bit LX7 microprocessor with AI vector instructions and USB-OTG.
NodeMCU V2 (ESP8266 / ESP-12E)
Popular Wi-Fi development board powered by the ESP8266 32-bit Tensilica L106 microcontroller running at 80/160 MHz, with integrated USB-UART, 4MB Flash, and 30 breadboard-friendly pins.
Raspberry Pi 4 Model B
Popular single-board computer featuring a 1.5 GHz 64-bit quad-core ARM Cortex-A72 processor (Broadcom BCM2711), dual 4K micro-HDMI, Gigabit Ethernet, USB 3.0, and 40-pin GPIO header.
PJRC Teensy 4.0 (ARM Cortex-M7)
Ultra high-performance development board featuring an ARM Cortex-M7 processor at 600 MHz (NXP i.MX RT1062), 2048K Flash, 1024K RAM, 40 total I/O pins, and hardware floating-point support.
STM32F103C8T6 'Blue Pill' Board
Popular low-cost 32-bit ARM Cortex-M3 development board featuring 72 MHz clock, 64KB Flash, 20KB SRAM, USB 2.0 Full Speed, and 40 breadboard-friendly pins.
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Helpful information about data sources, usage, and privacy
Where does the pinout data and technical specification come from?
The pinout data and technical specifications are based on official manufacturer datasheets as well as publicly available documentation and community resources. As PinoutDatabase is an independent project maintained by me as an individual, I strive for high accuracy, though inadvertent mistakes can still happen.
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