Propeller Project Board, 32810 back in stock

David Carrier

The Propeller Project Board, part number 32810, is back in stock. It has been updated to remove the XIN connection between the QuickStart header and the Propeller Microcontroller, so I/O pin activity cannot cause clock skew. It also has a higher current switch for enabling and disabling USB power.

— David Carrier
Parallax Inc.

LA6WNA

Good news. My order is just around the corner. Does the updates mean that the VGA-issue also is removed? See: http://forums.parallax.com/showthread.php/146944-Propeller-Project-Board-USB-VGA-issues/page2
Is there else any major changes compared to the "old" one`s?

Duane Degn

LA6WNA wrote: »

Does the updates mean that the VGA-issue also is removed?

After reading the other thread again, it looks like the remaining VGA-issue on the Rev B boards was related to the XIN connection.

I'm curious to see how the new USB power switch works.

LA6WNA

Duane Degn wrote: »

VGA-issue on the Rev B boards was related to the XIN connection.

Yepp. That`s what I`m hoping for, but I`m not sure.

David Carrier

Duane Degn wrote:

I'm curious to see how the new USB power switch works.

It works just like the old one. The only effect of the higher-current switch on the Rev C board is that if you go over current, and your USB port cuts power due to over-current detection, it will likely save the board. With the switches on the Rev A and B boards, a short over-current condition could damage the board.

— David Carrier
Parallax Inc.

Little-endian

Is there an ETA on when these boards will be available again?

Leon

David Carrier wrote: »

The Propeller Project Board, part number 32810, is back in stock.
— David Carrier
Parallax Inc.

It's still out of stock, according to the web site:

http://www.parallax.com/product/32810

Publison

The new Rev c was sold out in a few hours.

http://www.parallax.com/news/2014-12-15/small-design-flaw-propeller-project-board-revision-c-our-mistake-your-opportunity

http://forums.parallax.com/showthread.php/158716-Propeller-Project-Board-on-sale-for-8.99-!?highlight=32810

Little-endian

Yes, I'm aware they're out of stock and the issue they had with the rev c boards. Was just Inquiring when they'll be back in stock.

Publison

Sorry, I was responding to Leon. I should have quoted him.

Leon

I didn't realise that David Carrier's announcement was a few weeks old, and they sold out very quickly.

Publison

I didn't realise that David Carrier's announcement was a few weeks old, and they sold out very quickly.

No problem and Happy New Year Leon!

w4fej

I see from the link that Rev C boards will be replaced by Rev D boards. I have a unused Rev B board, does this Xin "feature" apply to this Rev B board??

Publison

Yes, Rev. B still had that "feature"

REV C NOTE: Access to XIN on the QuickStart Header was removed for Boards Rev C and later, to
prevent VGA output problems; see (7) VGA Pad and Pin Access, page 4.

http://www.parallax.com/sites/default/files/downloads/32810-Propeller-Project-Board-USB-Guide-v3.1.pdf

The problem occurred at higher resolution on the VGA. It should still work at lower resolution.

I guess I remembered wrong. (See Dave's post below).

Dave Hein

Publison wrote: »

The problem occurred at higher resolution on the VGA. It should still work at lower resolution.

The problem occurred for me when running VGA at 640x480. This happened on two different boards, and I had to drill out the XIN trace near the crystal to fix it.

Publison

This is the post I was referring to:

We discovered a trace issue that made one of the Propeller decoupling capacitors to be ineffective and therefore, on higher definition and some standard VGA video, the reliability was not there. If you were to look at the Cogs running the VGA signals you would see an “out of phase” effect due to this issue.

You should be able to run some simple VGA with the current board. I’m very sorry about the problem!

http://forums.parallax.com/showthread.php/146944-Propeller-Project-Board-USB-VGA-issues

Post #25 from Kevin Cook. I guess it may be unreliable unless you get the resolution correct, (hit or miss).

Also, the fix on the older board is in Post #31