While the Raspberry Pi Zero is not exactly broadly available, there are still several tenths of thousands who own, and I’ve seen several use a USB to OTG adapter combined to a USB hub to add USB devices such as a WiFi dongle, or/and keyboard. This works, but it’s quite messy.
That’s why Vikas Shukla created Hubpixed USB hub for the Raspberry Pi that does not require any cables and cleverly uses the test pins on the back of the board for USB data and power.
The board’s spring pins are the only electrical connections between Raspberry Pi Zero and the hub, with both boards attached with spacers, screws and bolts using the four mounting holes of RPi0. Vikas also showed the hub in action with a USB WiFi dongle. I’m not sure how it would fare with a USB hard drive however.
Hubpixed is on Kickstarter, and has already exceeded its (lowly) $1,000 funding target. You can pledge $8 to get Hubpixed manually assembled, or $10 factory assembled. Delivery is scheduled for March 2016, but he’ll probably have to sort out shipping however, as it’s not included and adds $6 to the US, and a deal-breaking $20 to the rest of the world. Delivery is scheduled for March 2016. The idea is great, but simple to reproduce, so it’s likely Chinese manufacturers will have a similar board soon for a couple of dollars shipped considering they are currently selling actual USB hubs for $1 including shipping.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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Another Raspberry Pi Zero project this time integrates into a gaming platform @ https://www.kickstarter.com/projects/1120658355/r-kade-zero
@Jean-Luc Aufranc (CNXSoft)
Thanks for the shout-out, for anyone interested the project build details are here:
https://hackaday.io/project/9844-r-kade-zero
ZeroBorg is add-on board with a 4-motor controller and some sensors for robotics applications https://www.kickstarter.com/projects/frobotics/zeroborg-robotics-for-the-raspberry-pi-zero
Hubpixed is now available at ebay UK, ebay in US and also at Reference Designer. Just search for huboixed at ebay.
UUGEAR makes something similar: http://www.uugear.com/product/zero4u/
I have upgraded the Hubpixed – One USB port is removed and we have Wifi in place of it. See the kickstarter project
https://www.kickstarter.com/projects/1728237598/hubpiwi-raspberry-pi-zero-hub-with-wifi-no-cable-c/
New version called HubSerialixed with 3 USB ports, and a USB to UART port.
https://www.kickstarter.com/projects/1728237598/hubserialixed-usb-hub-uart-for-pi-zero-w
I also released another iteration of it – ArduinoPixed – It has 3 USB Ports and an Arduino off the 4th USB port. Check details at kickstarter – https://www.kickstarter.com/projects/1728237598/ardiunopixed-usb-hub-and-arduino-for-pi-zero/