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disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 976

Posted: 12:46pm 16 May 2025

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What is the power source. Can you try another USB-C cable. Bad power supply can be an issue.

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Gadgetguy
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Joined: 26/04/2025
Location: France
Posts: 46

Posted: 02:38pm 16 May 2025

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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)

Bleep
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Joined: 09/01/2022
Location: United Kingdom
Posts: 582

Posted: 03:02pm 16 May 2025

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Gadgetguy said After doing
> option keyboard us, 0, 0, 600, 50

I see:

Total of 6 Mbytes PSRAM available
> US USB Keyboard Connected on channel 1
> USB Mouse Connected on channel 2

So both keyboard and mouse are detected, but neither works

Try
OPTION KEYBOARD US,0,0,200,150
The repeat rate you are setting is extreemly fast.

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7559

Posted: 03:28pm 16 May 2025

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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

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Gadgetguy
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Joined: 26/04/2025
Location: France
Posts: 46

Posted: 03:49pm 16 May 2025

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Bleep said

Try
OPTION KEYBOARD US,0,0,200,150
The repeat rate you are setting is extreemly fast.

Thank you. Tried it. Not really different unfortunately.

Gadgetguy
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Joined: 26/04/2025
Location: France
Posts: 46

Posted: 03:51pm 16 May 2025

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Mixtel90 said 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.

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.

dddns
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Joined: 20/09/2024
Location: Germany
Posts: 335

Posted: 04:36pm 16 May 2025

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disco4now said My Logitec K400+ works OK.
Connects Keyboard and Mouse.

Which version are you using as firmware?
Edited 2025-05-17 02:38 by dddns

Gadgetguy
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Joined: 26/04/2025
Location: France
Posts: 46

Posted: 07:00pm 16 May 2025

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dddns said

disco4now said My Logitec K400+ works OK.
Connects Keyboard and Mouse.

Which version are you using as firmware?

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

disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 976

Posted: 10:40pm 16 May 2025

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dddns said

disco4now said My Logitec K400+ works OK.
Connects Keyboard and Mouse.

Which version are you using as firmware?

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

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Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7559

Posted: 06:59am 17 May 2025

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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

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4005

Posted: 09:29am 17 May 2025

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Gadgetguy said I see USB Keyboard connected - but when I type on the keyboard it does not show on the screen. Are there any options to configure the keyboard? (if I plug the keyboard receiver in my laptop it works)

Bear in mind most things you have connected that keyboard to have hardware USB and/or large USB stacks (software). The Pico has neither i.e. no USB hardware and a limited software emulation of USB fitted into the available space.

John

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10080

Posted: 10:10am 17 May 2025

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Gadgetguy: does your board have R54 and R55 fitted? If it does please remove them (completely benign) and see if it makes a difference

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