Presto Help - Black screen on start

Support
1

Hi there,

I’m a programmer but new to Presto and Python. So hopefully I can get a few quick pointers on the basics to get me going.

When I first powered it on, I got a screen telling me that MicroPython was pre-installed. I managed to figure out that powering it on into “BOOT” mode allowed me to access the RP2350 drive on my Mac / Linux laptop. After trying to save a simple .py file there, I noticed it would vanish on reboot.

From there, it didn’t show anything on the display again - it is backlit but always black. I was also unable to get anything to work or appear on the screen. So I tried to “flash” it by copying the “presto-v0.0.5-micropython-with-filesystem.uf2” file to the drive, it would then automatically restart but again, black screen.

Can anyone give me any pointers here? If I could get something to appear and figure out the basics of having it load something to the screen, I should be able to pick up the programming side fairly quickly after that.

Thanks! :)

2

OK - made some progress. I figured out how to make a script run via Thorny. At least I know the hardware works now :)

My main is how can I make a specific python script run automatically when starting the Presto?

Thanks!

3

You don’t save to it via Boot Mode. Let it boot up not in boot mode, then connect to it via an IDE. I like most here, use Thonny.

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4

If you save your py file to the rp2350 file as main.py it will run automatically on boot up. That’s the way it works with Micro Python on a Pico.

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5

Ah, thanks!

I was trying to copy a file called “main.py” via USB transfer, but you need to do it through Thonny for it to work.

Thanks for the help - much appreciated! :)

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6

Yeah, it’s not exactly intuitive is it. ;)

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7

Haha, definitely not! :)

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