NERO-SP1 - Bridgetek - Reference Design Board, Arduino UNO Compatible Board, Short Shield Pins
Arduino Uno Design Starter for Scheme-It - Scheme-it - Engineering and Component Solution Forum - TechForum │ Digi-Key
2nd.ed】Control System Design:Getting Started with Arduino and MATLAB -Experimental Kit - Physical Computing Lab
ARDUINO - Digital Design
What is an Arduino? - SparkFun Learn
A Guide To The World Of Arduino
Arduino simulator AND | Tinkercad
Arduino and Genuino brand refresh, design insights | Arduino Blog
Tinkercad & Arduino: How to Design and Simulate Circuits | All3DP
VikeDuino Uno - Through-Hole Arduino Uno for CSU - Sponsor - PCBWay
Circuit design software that makes it easy to design, document, and debug electronics projects for the breadboard (more info in the comments). Would you find this useful? (x-post with r/ArduinoProjects) : r/arduino
Arduino UNO Reference Design | 3D CAD Model Library | GrabCAD