Dexter doesn't support a WiFi adapter #51
Comments
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This looks much bigger than a wifi "nub".
Does it have the same functionality?
The above product costs $34.
http://www.zedboard.org/sites/default/files/product_briefs/PB-AES-PMOD-WILINK8-G-V1.pdf
Compare to:
https://www.amazon.com/Edimax-EW-7811Un-150Mbps-Raspberry-Supports/dp/B003MTTJOY
for $10.
…On Mon, Jan 21, 2019 at 8:55 PM JamesNewton ***@***.***> wrote:
In the past, Dexter was unable to support a USB WiFi adapter for RF
networking, because the driver would not load on the version 12 operating
system.
A new Ubuntu 16.04 image being completed to close #25
<#25> might allow a
WiFi adapter to be added and work.
There appears to be a special adapter designed for the microzed board:
http://www.zedboard.org/product/wilink-8-adaptor
However, if a USB WiFi adapter is preferred, the current placement of the
fan, at the bottom of the microzed board, blocks all the USB connectors
(and the sd card). Moving the fan out to the skin and ducting the air to
the stepper motor drivers would give us the physical access we need the USB
hub for connecting peripherals to Dexter.
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I think trying a cheap adapter first is a great idea... I'm not sure why they have that specific adapter... |
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Resolved with the upgraded OS #25 |
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One issue with WiFi adapters is that the DHCP protocol will assign an IP on the local router and it's difficult to find out which IP was assigned. I remembered that there was a javascript page that could decode morse code: Take the keyboard events off that and add processing from the camera: Accessing the pixels in the picture isn't hard, and you can do a threshold to see if the picture is overall bright (LED on) or dark (LED off). Put that on a public web page (must have HTTPS, not HTTP) and then users can go to the web page, allow access to the camera, hold the camera over the robot, get the web URL decoded, and then click on it to connect directly to the robot! Users don't even need to know that it's using morse code. But it's also sort of cool that it could decode any message. |
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Although the wifi adapter does work, it can't be directly plugged into the USB A connector on the MicroZed board because that places it directly over the stepper drivers which get quite hot, causing the adapters to fail. Instead, a short USB A male to USB A female extension cable or small USB hub should be used to bring the port out into cooler air. |
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For more information, management, etc... see: |
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To avoid the heating problems with the little Edimax-EW-7811Un chipset RTL8188CUS I also tried this one but it doesn't work. |
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Kamino cloned this issue to HaddingtonDynamics/OCADO |
In the past, Dexter was unable to support a USB WiFi adapter for RF networking, because the driver would not load on the version 12 operating system.
A new Ubuntu 16.04 image being completed to close #25 might allow a WiFi adapter to be added and work.
There appears to be a special adapter designed for the microzed board:
http://www.zedboard.org/product/wilink-8-adaptor
However, if a USB WiFi adapter is preferred, the current placement of the fan, at the bottom of the microzed board, blocks all the USB connectors (and the sd card). Moving the fan out to the skin and ducting the air to the stepper motor drivers would give us the physical access we need the USB hub for connecting peripherals to Dexter.
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