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Forum Index : Microcontroller and PC projects : PicoMite HDMI/USB USB Hub Issues
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10062 |
What is the issue with I2S. The next release of the firmware will allow any pins to be used as long as all three pins are in the range GP0-GP31 or GP16-GP47 |
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| jimbotron Regular Member  Joined: 27/11/2013 Location: AustraliaPosts: 50 |
Yes I have the 13122E20 ones. I have plenty of spares I'll try again with a fresh board and Pico |
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| falcmax Newbie  Joined: 15/02/2025 Location: ItalyPosts: 7 |
I also included an 8 MB DRAM for testing. The idea is to use it in the future as a video frame buffer, obviously driven by the PIO. |
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| jimbotron Regular Member Joined: 27/11/2013 Location: AustraliaPosts: 50 |
I just realised I made a mistake and removed R56 and R55. But left R54 in. I have now removed R54 from the first board I built and it works with 2 out of my 3 keyboards. I did put together another board and it also failed. Came good when I removed R54 and R55. Still only 2 out of 3 keyboards work. For the keyboard that does not work I sometimes get "Error: Invalid address - resetting" flash up for a second then it resets to just the > prompt. The same keyboard works fine with an OTG connector. At work we've been using the FE2.1 as a USB Hub. It seems to be quite reliable. Edited 2025-03-20 21:51 by jimbotron |
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bigmik Guru Joined: 20/06/2011 Location: AustraliaPosts: 2946 |
Hi Jimbotron, All, Unless something has changed in the later revisions of the firmware, be careful of the FE2.1 as it won’t work with the MMBasic USB Pico. I have used the FE1.1 with success. Have you successfully used an FE2.1 with a PicoUSB? Regards, Mick (The Big One) . Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7499 |
The little module I've been using is the FE1.1. I've not had any problems with that so far. It lacks bells and whistles, but I don't mind that. The main problem in using it is the insane footprint of the pads! I wouldn't condemn the CH334 though. I think we've probably just been unlucky. It's quite possible that LCSC has been fleeced by unknowingly buying in faulty or even fake chips. It does happen on an industrial scale, not just small orders. Edited 2025-03-21 18:30 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Amnesie Guru Joined: 30/06/2020 Location: GermanyPosts: 528 |
Hello, Are there no other hub controllers? I do not trust china at all. Money isn't the problem. I seek for quality... I would design my own boards as usually. Do you have any suggestions for good quality ones excluding china? Greetings Daniel |
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| jimbotron Regular Member Joined: 27/11/2013 Location: AustraliaPosts: 50 |
No we actually use the RP2040 on the peripheral side of the FE2.1 running Arduino code. I think we chose it because of the number of ports it can support. We are doing a redesign at the moment, I'll let you know if we find something better. |
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