Here are the steps I took to get it working:
1) The board ties VCCIO to the 3.3v output on the chip. Youll need to
remove the solder bridge. Details on their web page for the part.
2) Connect VCC to VCCIO, this ties it to 5v, I just installed a jumper wire
on the board between the two.
3) Three wires connect to the header on the K2 control board. Make sure you
wire TX to RX and vice versa between the K2 and this board. I let the unused
RS-232 lines float and didn't jumper rts/cts.
4) Download the driver from ftdichip.com. This is a virtual com driver, the
USB port looks like a serial port.
The converter is bus powered from the computer.
Ive been using it with Ham Radio Deluxe for a week and everything is
working fine. There was some concern on the reflector over noise, but I
havent found that to be a problem yet. There are bigger noise problems in
the house.
This board only provides control of the radio via the serial port, I didn't
bring all the signals from the control board to the back panel, so if you
want to control a KAT-100, you'll still need the KIO2 or equivalent. I just
liked the idea of going from TTL serial on the control board directly to
USB, rather than TTL -> RS-232 -> USB.
There is an article in the latest QST which also discusses this chip.
Jim KA2RVO
From: "John [K7SVV]" <[EMAIL PROTECTED]>
To: "James austin" <[EMAIL PROTECTED]>
CC: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 USB support with Timewave U232 ?
Date: Fri, 4 May 2007 20:58:53 -0700
Jim,
In today's mail I received a couple of the USB to Serial converters
you
spoke of. They look very interesting and I am anxious to get one of them
fired up in my K2 but I have a couple of questions that you will probably
be
able to help me with since you successfully got yours going.
What did you do with the unused RS-232 control lines? The K2 only
uses
RXD, TXD, and GND. Did you jumper RTS to CTS as it is in the K2's serial
interface cable and did you tie the rest of them up or down or did you let
them float?
You mentioned that you connected your converter to the header on the
front panel board. Would you describe what line you connected there and
did
you connect RXD and TXD to the real of the K2's DB9 connector?
Is your converter bus powered from the USB interface and was your
board
already wired that way?
Thank you for your help. 73
John [K7SVV]
On 4/28/07, James austin <[EMAIL PROTECTED]> wrote:
Here is a $15 part to add a USB port to the K2.
http://www.sparkfun.com/commerce/product_info.php?products_id=718
I got one today and connected it to the header on the control board. Ham
Radio Deluxe identified the radio and is able to control it.
If you don't have an internal battery installed, you can use that screw on
the top panel to mount this board and the USB port lines up with the empty
hole for the battery switch.
Jim KA2RVO
K2 #5919
>From: "Dan Barker" <[EMAIL PROTECTED]>
>To: <elecraft@mailman.qth.net>
>Subject: RE: [Elecraft] K2 USB support with Timewave U232 ?
>Date: Wed, 25 Apr 2007 12:03:13 -0400
>
>Neat looking device, but you'd have to find a place to put it. They
depend
>on removing the DB-9 and using that space. You'd need to keep the DB-9
for
>it's AUX IO purposes. Might be simpler to use one of those $10 Serial to
>USB
>cables.
>
>At $80, it would sure hurt!
>
>Dan / WG4S / K2 #2456
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] Behalf Of James Apple
>Sent: Wednesday, April 25, 2007 11:28 AM
>To: elecraft@mailman.qth.net
>Subject: [Elecraft] K2 USB support with Timewave U232 ?
>
>
>Has anyone tried adding USB support to the K2 with the new Timewave U232
?
>
>http://timewave.com/support/U-232/index.html
>
>Thanks
>
>- Jim
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--
John [K7SVV]
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