By the way. And You don’t plan to release an expansion with additional USB ports to the SPDF and analog output for sound and MIC input ? You can use 4 dual USB port, same as used on the PC. Height restrictions on the extra Board will not. This charge can be connected from the bottom of the housing and connected to the connector 40 Pin. I think this card will be useful to many. It will be possible to fix the extension to SD cards.
1 Like
This will be add to our plan list 
Thanks again for the feedback and suggestions.
Usb expansion would be great, i would like to have at least 4 more usb ports, lack of available usb ports is a deal breaker when it comes to this tiny dev boards/boxes.
1 Like
Tommy, if need more USB onboard you can look at the GB DIY Hub for RPi
But you should keep in mind the power consumption and the Vim USB fuses rating
Thanks for suggestion, but i am not quite sure how much power would the board use with all those ports used, maybe it would work with 5V 3/4A adapter,2 ports for sata 2,5" hdd, usb sound card, keyboard and mouse, and one to connect usb stick, it would be great to be able to use all of this.
Does anyone use externally powered usb hub, would that be a good solution, would the hub interfere with Vim in negative way?
The limit to USB power is from the fuses not so much the power adapter used, incoming power via USB-C or Vin appears limited to 2600mA. Also seen in the picture below, 500mA(USB port next to LAN), 900mA(USB port next to USB-C) fuses limit current on port’s 5vdc output. The USB ports on the GPIO are each(?) limited to 500mA. It might better be seen in the Schematic(PDF)
EDIT: It would be good to have one of the little USB Volt/Current gadgets to get a real time reading of the current demands of each of your USB devices. I have one on the way, I get curious about this.
I sometimes use a generic powered 4-port hub. I have noticed no problems using it with the Vim or USB connected devices, Sound card, Mouse, Thumb drive, etc. I have not used for SATA or IDE yet.
Yes, i remembered later that it’s limited to 2600 mA, maybe it would be good to have something to see how much current it would draw.
I would buy usb hub with separate power, but i am not sure would it have any negative effect on Vim?
It fits the current capabilities of VIM (USB 2.0).
It fits current and future features of VIM (USB 3.0) for use in any home devices.
I’m going to use this hub to power the Board VIM (red connectors on the end). Then don’t need power supply. If you order from VIM and this hub, you can do without the power unit (partially offset by price hub). Ideally it would be nice if Khadas began to produce a smaller version of this hub (the size of the VIM and strengthen it from the bottom), on 8 regular ports and one for power VIM. With cable for power connection from the hub to the port VIN (which would have been free OTG port on the Pat VIM). To place USB connectors at parametru all lateral surfaces.
Didn’t try it yet but probably if you connect your vim to a powered hub, it will be powered through the usb port. No need for a extra power cable.
Just tried it, you can power it through a USB-port.
Yes, it can be powered through USB port, but if using other accessories plugged to on board USB ports(or GPIO) one should be mindful of 500mA and 900mA limits, depending on which USB port used for power.
maybe to provide with Khadas VIM an USB Serial Cable (like wetek did , at least with wetek openelec version), in this way many problems could be tracked better (like currently burning tool problem which already two guys have.
Or to plan this with VIM 2 . I am sure everyone can give few bucks more to have such cable at home!
Show an example of such a cable.
well anything Khadas produce for VIM / VIM2 devices
but something like:
USB TO TTL UART Module Serial Converter for GeekBox
USB to TTL Serial Cable - Debug / Console Cable #954
Do you plan to release any expansion boards for Vim, there is a board that can be used with geekbox, do you plan anything similar?
Has the fan been released to gearbest for sale? I still can find it there…
There is still nothing on Gearbest, can i ask you why you can’t order from Geekbuying?
I would like to see some kind of expansion board that will add extra functionality to this board, usb and other stuff, do you have anything in plan?
Well, I prefer to buy things from one place. I was told it will be available in Gearbest, hence the question.
I am the same, that is why I did not buy the fan yet…