Curved arrow shapes in 8 colors.

Curved Arrows

用于创建系统循环图

系统循环图

Some Icons for Finite State Machines

Finite State Machine

I have made a third stencil of military (NATO) symbols to use for my wargames maps and orders of battle. I created it by scanning the symbo…

Military Symbols III

Sparkfun Espressif ESP32 Arduino

Sparkfun ESP32 Thing

A set of colorized SysML icons that covers various diagrams, element types, and connectors.

SysML Color Icon Set

generic system block diagram symbols, based on 2020 USITT Sound Document Recommendations v3

SBD Generic Symbols v1

This is a non-standard extension to IDEF1X97 (ISO/IEC/IEEE 31320:2) to help you design spatial Relational databases (e.g., to be implemente…

IDEF1X97 - A Spatial Ext…

generic system block diagram symbols for wireless equipment, based on 2020 USITT Sound Document Recommendations v3

SBD Wireless v1