STEP 12: Let's put a roof on our house!
print(thing) # thing isn't defined
Your Micro:bit needs to be set up for Codesters before it can connect to your program.
Click the button below to upload the Codesters .hex file to your Micro:bit.
Warning: this will erase the program on your Micro:bit.
Your Micro:bit has an old version of the Codesters .hex file.
Click the button below to upload the current Codesters .hex file to your Micro:bit.
Or try the web loader to set up your Micro:bit
Having troubles? Check out the Micro:bit instructions to update your firmware
Setting up your Micro:bit
Error while uploading file to Micro:bit
Try downloading the .hex file instead
Calibrate the compass by tilting your Micro:bit until all the LEDs are lit.
For a demonstration see
the Micro:bit calibration instructions.
Try the following steps to connect to your Micro:bit:
1. You may need to reload this page and try your program again.
2. Try disconnecting and reconnecting your Micro:bit. Then reload the page and run your program again.
3. If you are still having problems your Micro:bit may have an old
firmware version that is incompatible with Codesters.
To update the firmware follow these instructions from Micro:bit
Are you already running a Codesters project in another tab or window?
Micro:bit can only connect to one web page at a time.
Try stopping other Codesters projects or closing
other tabs or windows that may be using your Micro:bit.
If that doesn't fix the problem try disconnecting your Micro:bit,
reloading this page, and reconnecting your Micro:bit.
Status: Still connecting...
Status: Not Found
Is your Micro:bit connected?