Can't connect to trinket pro even with bootloader installed

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Pikkufighter
 
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Can't connect to trinket pro even with bootloader installed

Post by Pikkufighter »

Good evening

I've recently acquired a trinket pro and a single strand led strip.
I'm trying to upload the strandtest to the trinket pro with arduino 1.8.19 but i only get the following error.

Code: Select all

avrdude: Version 6.3-20190619
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

         Using Port                    : usb
         Using Programmer              : stk500v2
avrdude: usbdev_open(): did not find any USB device "usb" (0x03eb:0x2104)

avrdude done.  Thank you.

An error occurred while uploading the sketch
I do have the board added as well.

any ideas?

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adafruit_support_bill
 
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Re: Can't connect to trinket pro even with bootloader instal

Post by adafruit_support_bill »

Are you trying to connect directly via the USB jack or are you using an FTDI cable?

As noted in the product description, we have deprecated this board since the USB implementation is not compatible with most current generation computers. The most reliable way to program them is with an FTDI cable. https://learn.adafruit.com/introducing- ... using-ftdi


https://www.adafruit.com/product/2000
Deprecation Warning: The Pro Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Pro Trinket so that people can maintain some older projets, we no longer recommend it.

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Pikkufighter
 
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Re: Can't connect to trinket pro even with bootloader instal

Post by Pikkufighter »

Currently without FTDI as the documentation said it should be possible.
I have ordered a FTDI but just wanted to see if anyone knew a possible solution.

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adafruit_support_bill
 
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Re: Can't connect to trinket pro even with bootloader instal

Post by adafruit_support_bill »

If you have access to an older computer you can try that. Another approach that sometimes works is to use an older USB hub between your computer and the Trinket.

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Pikkufighter
 
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Re: Can't connect to trinket pro even with bootloader instal

Post by Pikkufighter »

Don't have access to an old pc and tried the oldest hub I had.
Guess I have to wait for the cable.

Thanks for the quick reply and the explanation off what was wrong!

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