Newbie
Joined: 01/04/2015
Location: United KingdomPosts: 29
| Posted: 03:37pm 05 Aug 2026 |
I have been programming Micromites and Picomites on my Win10 laptop for years and was doing so last week with no problems. This week it won't connect. For instance using Tera Term I can't select the serial ports and no Coms ports show up! I suspect Microsoft has snook in an update. I might add that the USB ports do work if I plug in a keyboard for instance. I'm a bit puzzled, any ideas?
I also have a Linux laptop and looked into running MMedit on it but it looks complicated and at my limits with Linux.
Guru
Joined: 07/11/2023
Location: United KingdomPosts: 2076
| Posted: 04:09pm 05 Aug 2026 |
This happened to me (ages ago) with only the PicoMite. Tried lots of stuff to no avail except for the easiest thing (typical of me
) which was to connect to a different USB hub port. Everything came to life and I could even revert back to the original port. Newbie
Joined: 01/04/2015
Location: United KingdomPosts: 29
| Posted: 05:46pm 05 Aug 2026 |
I tried different USB Ports but to no avail.
Guru
Joined: 18/02/2023
Location: United StatesPosts: 306
| Posted: 06:48pm 05 Aug 2026 |
Sometimes the USB ports get confused on Windows machines and get turned off.
A hard power cycle is worth trying if you haven't done that yet.
Guru
Joined: 05/03/2018
Location: NetherlandsPosts: 6103
| Posted: 07:36pm 05 Aug 2026 |
Try powering off the PC (and its built in root hub).
It happened to me after too many re-connects of the same device.
Bug in the usb hub firmware.
Volhout
Guru
Joined: 04/06/2022
Location: GermanyPosts: 1547
| Posted: 11:01pm 05 Aug 2026 |
Hi Octatron
Yes, that sounds like a typical Windows problem.
It often helps to make Windows forget the previous settings:
________________________________________
Disconnect the Picomite USB Cable
then open Windows Device Manager as administrator (devmgmt.msc)
Activate "Show hidden devices"
Delete all unused USB Devices
then Plugin the PicoMite.
________________________________________
Good luck!
Cheers
Martin
Edited 2026-08-06 09:13 by Martin H.
Guru
Joined: 17/05/2016
Location: United StatesPosts: 3879
| Posted: 11:24am 06 Aug 2026 |
How do you know which are "unused"?
Guru
Joined: 04/06/2022
Location: GermanyPosts: 1547
| Posted: 12:48pm 06 Aug 2026 |
Hi Lance,
if they only appear when you display ‘hidden devices’, you can usually delete these devices.
The devices labelled ‘BOOT’ indicate the state when the ‘Boot’ button is pressed, i.e. as a USB drive.
The JTAG devices are used for the serial USB connection.
Your list looks as though your Windows has registered every Pico on every possible USB port.
It’s not a Pico problem, but a Windows problem.
This method also works if Windows has got itself in a bit of a mess with the USB drivers for other devices, such as mice or USB sticks.(The fact that they simply go unrecognised)
Don’t worry – when you plug the Pico back in afterwards, the driver will be reinstalled, hopefully with the correct settings.
Good old Microsofts Plug and Pray
Edited 2026-08-06 22:54 by Martin H.
Guru
Joined: 17/05/2016
Location: United StatesPosts: 3879
| Posted: 03:05pm 06 Aug 2026 |
I'm not having any problems--I just looked for "unused" as you suggested, and was surprised by what I saw. (But I've programmed several dozen PicoMites.)