resistor-color-chart Standard-ASCII-Table ARDUINO_V2-1 atmega328w
Resistor Color Code ASCII Table Code  UNO Pin-Out Arduino 328PW
Micro-Bit-Pin-Out-Diagram  Arduino-Due-pin-out-diagram  ardunio_mega_pinout  Arduino-Yun-PinOut
BBC Micro:bit Pins Duemilanove Pins MEGA 2650 Pin Out Arduino YUN
beaglebone-Pin-Out-Official atmel-atmega32u4-pinout-diagram ATMEGA8-16PI-PIN-OUT Arduino Pro Mini Pin Out Diagram
BeagleBone Pin Out ATMEGA32U4 Pin ATMEGA16P Pin Out Mini Pro Pin Out
Raspberry-Pi-GPIO-pinouts-Diagram Raspberry Pi Pin Out Diagram Complete StellarPad-LM4F StellarPad ML4-Pin-Out-Digaram
RPI GPIO Pin Out  RPI GPIO 2 Pin Out  StellarPad LM4F Pin  LaunchPad MSP4
FraunchPad-MSP430FR5739-Pin-Out Esplora-Pin-Out-Diagram intel galileo gen2 ports Digipark-Pin Out Diagram
 FraunchPad MSP43  Esplora Pin Out  Intel Galileo Pin  Digipark
Raspberry Pi 2 Diagram Pin Outs ATMEGA ATINY Pin Out Diagram ATMEGA 2560 Pin Out Diagram ATMEL MEGA32U4 AU Pin Out Diagram
Raspberry Pi 2 Pins ATTINY Pin Out MEGA 2560 Pin Out MEGA32U4  Pin Out
ATMEL MEGA328P AU Pin Out ATMEL MEGA328P Pin out Diagram Arduino Ethernet Shield Pin Out Module Arduino FIO Pin Out
MEGA328P Pin Out MEGA328P Pin Out ETH Shield Pin Out Arduino FIO Pin Out
Geard-Motor-Box-dimention-scaled-demo-type2-type1-01-01 Node-MCU-Pin-Out-Diagram SPI-Communication-Diagram  attiny44_84-attiny45_85-pinout-Diagram
ESP8266-ESP-201-Pin-Out-Diagram-14core ESP8266-Version-7-Pin-Out-Diagram  Arduino-Due-Pinout-Diagram-Illustration-Complete-Pin-Diagram
ESP8266 ESP201 ESP8266 Version 7  Arduino DUE Pinout

Arduino Datasheets

Official Arduino UNO R3 Schematic | Download > PDF

Official Arduino MEGA 2560 R3 Schematic | Download > PDF

Official Arduino Duemilanove Schematic | Download > PDF

Arduino Esplora Schematic | Download > PDF