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Forum Index : Microcontroller and PC projects : Picomite USBHDMI
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disco4now Guru  Joined: 18/12/2014 Location: AustraliaPosts: 976 |
What is the power source. Can you try another USB-C cable. Bad power supply can be an issue. Latest F4 Latest H7 FotS |
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| Gadgetguy Regular Member  Joined: 26/04/2025 Location: FrancePosts: 46 |
Thank you for suggesting - but I tried several power supplies and different cables. They make no difference unfortunately. (For example I tried powered by my laptop got same results as when powered by a brand new raspberry pi 5 USB power supply) |
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| Bleep Guru Joined: 09/01/2022 Location: United KingdomPosts: 582 |
Try OPTION KEYBOARD US,0,0,200,150 The repeat rate you are setting is extreemly fast. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7559 |
Keyboards that contain other devices like USB hubs or track pads may not work. The PicoMite USB system is not a full version like Windows. Also, there are some RGB keyboards that don't work (I have one that appears as multiple USB devices so that it can have n-key rollover, which you can't have on USB2, never mind USB1 like the Pico, as it's too slow). To confuse things even more, some powered hubs don't work if you use them with a Pico. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Gadgetguy Regular Member Joined: 26/04/2025 Location: FrancePosts: 46 |
Thank you. Tried it. Not really different unfortunately. |
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| Gadgetguy Regular Member Joined: 26/04/2025 Location: FrancePosts: 46 |
Thank you. Yes, I am aware. But it seems that some people are using the exact same keyboard (Logitech K400) and it works for them. Hence my confusion. Of course I can use the keyboard that works - I was just hoping to use the Logitech one. |
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| dddns Guru Joined: 20/09/2024 Location: GermanyPosts: 334 |
Which version are you using as firmware? Edited 2025-05-17 02:38 by dddns |
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| Gadgetguy Regular Member Joined: 26/04/2025 Location: FrancePosts: 46 |
I am on RC23. Please note that I have the K400r model, which is very similar to the K400+ but not 100% the same. Thank you so much for any ideas! Edited 2025-05-17 05:07 by Gadgetguy |
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| disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 976 |
Logitech K400+ Works on RC23 HDMIUSB for me. Only setup is OPTION RESET HDMIUSB Note: This is the first version of the reference design, no PSRAM option and no I2S The VID/PID and recognised devices on the Logitech K400+ ----------------------------------- ? MM.INFO(USB VID 1) --> 1133 ? MM.INFO(USB VID 2) --> 1133 ? MM.INFO(USB PID 1) --> 50475 ? MM.INFO(USB PID 2) --> 50475 ? MM.INFO(USB 1) --> 1 (Keyboard) ? MM.INFO(USB 2) --> 2 (Mouse) Edited 2025-05-17 12:19 by disco4now Latest F4 Latest H7 FotS |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7559 |
A K400R is not a K400 or a K400+. Some keys are programmable. There is obviously different firmware in the keyboard and it is definitely a possibility that the K400R won't work even though the others do. We don't know these things until someone tries them, unfortunately. When your sample of K400R users is one it's very difficult to figure out what's happening! Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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