The Raspberry Pi Compute Module 3 has a SINGLE USB port built in. In the Freeplay CM3, that's connected to the external port (USBEX).
What Sam did was to break that connection from the Pi to the USB port by cutting the traces.
Then he used a USB hub chip to turn the one port into two.
Of the 2 new USB ports, he connected one to the external port and the other to the internal WiFi dongle.
Of course, we had anticipated that this could be done, and that's why there's the mark where you can cut the traces and access to the PiUSB and USBEX
By the way, it's worth noting that you could have a hub that has more ports, too. I don't know how much you could cram in there, though.
Code:
PiUSB -----=----- USBEXWhat Sam did was to break that connection from the Pi to the USB port by cutting the traces.
Code:
PiUSB ----- ----- USBEXThen he used a USB hub chip to turn the one port into two.
Code:
+---
PiUSB -----HUB
+---Of the 2 new USB ports, he connected one to the external port and the other to the internal WiFi dongle.
Code:
+--- USBEX
PiUSB -----HUB
+--- WiFiOf course, we had anticipated that this could be done, and that's why there's the mark where you can cut the traces and access to the PiUSB and USBEX
By the way, it's worth noting that you could have a hub that has more ports, too. I don't know how much you could cram in there, though.
Card Fighters' Clash 2 English Translation ( http://cfc2english.blogspot.com/ )
Neo Geo Pocket Flash Cart and Linker Project ( http://www.flashmasta.com/ )
Avatar art thanks to Trev-Mun ( http://trevmun.deviantart.com/ )
Neo Geo Pocket Flash Cart and Linker Project ( http://www.flashmasta.com/ )
Avatar art thanks to Trev-Mun ( http://trevmun.deviantart.com/ )