Incorrect wiring diagram for uOLED to Prop Plug

Joel Rosenzweig

My appologies if this has been posted before, but since the error in the documentation still exists, I assume it hasn't been discussed.

The 4D Systems uOLED 128·G1 display gets firmware updates via the serial port interface.· Parallax has a wiring diagram on the product page that shows how to hook up the Prop Plug to the display.· 4D Systems sells their own USB -> Serial plug that does the same thing.· If you own the Prop Plug, you don't need to buy the 4D Systems' device.· That said, there's a wiring error in the diagram.· The documentation reverses RX and TX lines.· The uOLED module has TX OUT on pin 3 and RX IN on pin 5.· uOLED TX OUT needs to be connected to the Prop Plug RX IN, and the uOLED RX IN needs to be connected to the Prop Plug TX OUT.· Therefore, swap the RX and TX in the diagram that is given.

I've attached the diagram as posted on Parallax's site for reference.· I didn't edit it to show the corrected wiring.· Maybe the Parallax folks can fix the document for the next person who runs into this?

Joel-

JD

Joel,

We have referred to the documentation that we have, and you are correct. Thank you for pointing that out; also for providing help to other forums members who may have encountered that issue. The fix is in the works and should be posted by Monday.

Sorry for any inconvenience,

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Respectfully,


Joshua Donelson
www.parallax.com

JD

Joel,

Here is the corrected documentation for proper µOLED128-G1 wiring connection using the Prop Plug. The product page will also be updated, but I wanted to make sure you received the corrected document. Thank you again.



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Respectfully,


Joshua Donelson
www.parallax.com