Hi,
I've been working on some schematics.
Just for my info, you want one upstream USB type C and one downstream USB type A 2.0 and one downstream USB type A 3.0. The BOM cost of something like this will be around 10 euros. A PCB might be around 15 euros with assembly and than another couple euros for shipping.
Hello,
This looks about what I had in mind...
I do not see the out 5V from the 5V converter however... Am I missing something?
Where/How are you getting PCB made? I have been using the jlcpcb system. But they have a MOQ of 5...
Do you have other suppliers?
Cyrille
It is just a quick sketch. I see more things missing now.
I normally order my PCBs at JLCPCB. The MOQ there is 5. For assembly they have the option to assemble just 2 PCBs, so you have the BOM cost just twice.
Hello,
I just did a test with the USB Hub that I was showing earlier..
The good news is that you can actually separate the USB2 Data lines from the USB3 Data lines to "expand" 1 USB3 plug into 1 USB2 and one USB3...
It works, but under the condition that the upstream port is USB3 and that the downstreams are USB2 and 3 respecively...
Here is a picture: The main picture shows the frontside of the PCB with the 2*2 USB2 Super Speed lines to the USB3 port (at the right)..
The insert shows the USB2.0 datalines going directly to the first USB2 port... As you can see, I have removed the USB Hub chip..
This means that the schematics can be simplified by removing the USB hub!
Cyrille
Hi,
have you tested it with the setup you showed in your earlier post? If so, thats some good news.
The downside is that the USB3.0 port won't be backward compatible with USB 2.0 anymore, but that shouldn't be a problem with your setup. I will change this in the schematic.
I have tested it with my camera on USB-3 and an ESP32 on USB2...
The solder is crap and I did not want to move things too much, so I did not connect it to the whole setup...
Cyrille
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