# Micro bit problem
**URL:** https://forum.makecode.com/t/micro-bit-problem/17150
**Category:** micro:bit
**Created:** [December 30, 2022, 5:57pm UTC](https://forum.makecode.com/t/micro-bit-problem/17150 "2022-12-30T17:57:10Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Petros\_Manos](https://forum.makecode.com/u/Petros_Manos)
#### Post date: [December 30, 2022, 5:57pm UTC](https://forum.makecode.com/t/micro-bit-problem/17150/1 "2022-12-30T17:57:10Z")
When i code the robot and send the hex file to the micro bit i turn on the micro maqueen and it does nothing
Or when i send hex files to the micro bit it instantly delete the files
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### Author:  [@bsiever](https://forum.makecode.com/u/bsiever)
#### Post date: [January 3, 2023, 6:19pm UTC](https://forum.makecode.com/t/micro-bit-problem/17150/2 "2023-01-03T18:19:41Z")
Hi @Petros_Manos,
The Micro:bit can only hold one program, so when you put one program on it, the old one is erased.
Do any of the lights on the micro:bit come on (front or back)?
Can you share a link to the program you’re trying to use on the Maqueen (Here are instructions to get a link to share it: [https://support.microbit.org/support/solutions/articles/19000086289-sharing-a-makecode-project](https://support.microbit.org/support/solutions/articles/19000086289-sharing-a-makecode-project))?
You might want to contact the company that makes Maqueen, DFRobot: [https://www.dfrobot.com/](https://www.dfrobot.com/).
Bill
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### Author:  [@Petros\_Manos](https://forum.makecode.com/u/Petros_Manos)
#### Post date: [January 3, 2023, 7:15pm UTC](https://forum.makecode.com/t/micro-bit-problem/17150/3 "2023-01-03T19:15:16Z")
Yes when i start maqueen there is the icon that i set.
When i Make a movement code i turn on maqueen and then he does nothing.
Plus when i remove the cable from the micro bit it erase everything and only keeps 2 files from chrome and one text file
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### Author:  [@bsiever](https://forum.makecode.com/u/bsiever)
#### Post date: [January 3, 2023, 9:41pm UTC](https://forum.makecode.com/t/micro-bit-problem/17150/4 "2023-01-03T21:41:25Z")
Hi @Petros_Manos ,
Once you program the file on the Micro:bit, the “program file” won’t show up in the list of files. For example, if I have a file called “myProgram.hex” that I drop on the micro:bit drive, it will update the program inside the micro:bit, but it will never show “myProgram.hex” in the list of files. It’s transferred to a hidden part of the micro:bit’s memory that doesn’t show up as a file.
If you haven’t already done something like this, you might want to try a really simple program that show words scrolling across the screen, like this example: [https://makecode.microbit.org/\_g8VEtLTzVEFc](https://makecode.microbit.org/_g8VEtLTzVEFc) . Once it’s programmed on a micro:bit the “file” won’t show up, but the words will scroll across the screen whenever a micro:bit is powered up from either a battery or USB cable. It should still work if you disconnect and reconnect the power.
You may want to carefully check the connections on the Maqueen, make sure the micro:bit is firmly plugged in to it, and double check the getting-started instructions from DFRobot (These
[https://github.com/DFRobot/Silly-Maqueen-Makecode/raw/master/Silly%20Maqueen-Makecode-V1.0-2019-11-20-EN.pdf](https://github.com/DFRobot/Silly-Maqueen-Makecode/raw/master/Silly%20Maqueen-Makecode-V1.0-2019-11-20-EN.pdf))
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### Author:  [@Petros\_Manos](https://forum.makecode.com/u/Petros_Manos)
#### Post date: [January 4, 2023, 9:31pm UTC](https://forum.makecode.com/t/micro-bit-problem/17150/5 "2023-01-04T21:31:13Z")
Okay thanks for your help
But still when i make the code for movement and transfer it in the micro bit it wont do anything the only thing that i could do is turn on the leds and make a cide for sake and the 2 buttons