A Wokwi alternative with blocks and classrooms

What they share

Both run in the browser, simulate boards such as Arduino, ESP32, Raspberry Pi Pico and STM32, and compile real Arduino code.

What Circzy adds

• Block programming that generates C++
• ESP8266 boards: NodeMCU V3, NodeMCU Amica and WEMOS D1 Mini
• A virtual phone for IoT projects
• Mains parts such as outlets, 220V lamps, switches, SSRs and PZEM-004T
• Classrooms with assignments, timed exams and gradebooks
• English and Indonesian interface

When to stay with Wokwi

Wokwi has a large global community and many English examples. If it already does what you need, keep using it. Many makers use both.

FAQ

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