pxt-calliope/docs/device/error-codes.md
2016-08-18 07:23:26 -07:00

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# Error codes
The micro:bit error codes
Your micro:bit may encounter a situation that prevents it from running your code. When this happens, a frowny face will appear on your micro:bit screen (see picture) followed by an error number.
Below is a list of error numbers and what they mean:
* **10** (`MICROBIT_I2C_LOCKUP`): the micro:bit's I2C bus is not working
* **20** (`MICROBIT_OOM`): there is no free memory on the micro:bit
```sim
basic.showLeds(`
# . . . #
# # . # #
. . . . .
. # # # .
# . . . #
`)
```
### See also
[Run scripts on your micro:bit](/device/usb)