# Simulation makecode

**URL:** <https://forum.makecode.com/t/simulation-makecode/7119>\
**Category:** Maker\
**Created:** [March 31, 2021, 3:55pm UTC](https://forum.makecode.com/t/simulation-makecode/7119 "2021-03-31T15:55:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Marc](https://avatars.discourse-cdn.com/v4/letter/m/8dc957/32.png) [@Marc](https://forum.makecode.com/u/Marc)\
**Post date:** [March 31, 2021, 3:55pm UTC](https://forum.makecode.com/t/simulation-makecode/7119/1 "2021-03-31T15:55:20Z")

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Two days now where the simulation no longer shows the LEDs on all the microcontrollers.

Is there a problem on this site?