The Interactive Database for
Pinouts & Hardware Diagrams.
Interactive diagrams, pin functions and links to technical datasheets for microcontrollers, dev boards, and ICs at a glance.
All Boards, Chips & Connectors
Development platforms, microcontrollers, ICs and standard interfaces
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).
USB Type-B Standard 4-Pin Interface
Standard 4-pin square USB Type-B female/male connector interface for printers, Arduino Uno, USB audio interfaces, and external peripheral devices.
3-Pin PC Fan Connector
Standard 3-pin motherboard fan connector with 0.1 inch (2.54mm) pitch for 12V DC cooling fans with Ground, +12V Power, and Tachometer speed feedback signal.
3.5mm TRS Audio Jack (3-Pole Stereo)
Standard 3.5mm (1/8 inch) TRS 3-pole stereo audio connector with Tip (Left Channel), Ring (Right Channel), and Sleeve (Ground).
USB 2.0 Internal 9-Pin Motherboard Header
Standard 9-pin (2x5 keyed) internal motherboard header supporting dual USB 2.0 front panel ports with +5V VBUS, Data- (D-), Data+ (D+), and Ground (GND).
DisplayPort (DP) 20-Pin Interface
Standard 20-pin interface for digital audio and video transmission (Main Link with up to 4 lanes), AUX channel for control/EDID, and Hot Plug Detect.
LP2950-3.3 Micropower Voltage Regulator
Positive 100mA 30V Linear Micropower Voltage Regulator, Fixed Output 3.3V, TO-92
MCP2551 High-Speed CAN Transceiver
High-Speed CAN Transceiver, 1Mbps, 5V supply, DIP-8
USB 3.0 Type-A SuperSpeed Interface
Standard 9-pin USB connector with blue color coding. Fully backward compatible with USB 2.0 (pins 1-4) with 5 additional SuperSpeed differential and ground lines (pins 5-9).
4-Pin PWM PC Fan Connector
Standard 4-pin 2.54mm pitch polarized motherboard connector for PC cooling fans featuring Ground, +12V DC power, Tachometer RPM feedback pulse, and 25 kHz PWM speed control.
ATX 24-Pin Motherboard Power Supply
Standard 24-pin dual-row power connector defined in ATX12V 2.0+ specifications providing +3.3V, +5V, +12V, -12V, +5VSB standby power, PS_ON# power switch, and PWR_OK signal.
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.
ESP8266 ESP-01 / ESP-01S Wi-Fi Module
Ultra-compact 2.4 GHz Wi-Fi module with integrated TCP/IP stack, 32-bit Tensilica MCU, and 2x4 (8-pin) 2.54mm pitch header.
Frequently Asked Questions & Transparency
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.
Can I use the graphics and how are they created?
The SVG vector files and PNG graphics are free to download and use for private/personal purposes. Depending on the component, the diagrams are either crafted manually or generated automatically based on package footprint and pin definitions.
Found an error or missing a component? How can I give feedback?
Community feedback is always appreciated! If you spot an error or are missing a specific component, please use the 'Report Issue' button directly on that component's page or send me a message via the contact form.
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