<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="country-region"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="place"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:Arial;
color:windowtext;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’ve fielded a couple of questions about links to some
interesting hardware. Below are a few links to what I purchased. On the ebay
stuff, there are other vendors out there, these are just the ones that I have
had good success with. I’ve been having problems with IE on my email
computer, so it was not as easy to include links in emails. This is from a
different computer (and I hope it gets through).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Note that some of these links are from when I purchased the
items, but you should be able to find updated links to purchase. In every
case, when I looked them up, they said that the seller has an updated version.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Amazon sells a Sharp exact replacement LCD for the Sony PSP,
which is 480x272, for only about $25-$30. Go to Amazon, and search for Sony
PSP replacement screen. It does not include the (weird) connectors or the
touchscreen portion. The touchscreen and connectors are available from
Sparkfun, if you need them. Mouser also sells the 40-pin connector for the
basic display. I think there is a separate power connector for the Sharp PSP
display, Sparkfun and Mouser also sells those. I can provide part numbers if
necessary. I have one of these Sharp displays, but have not fired it up yet. I
think it uses a higher-voltage for the backlight, above 12V. I plan to use it
with a TFT driver board that the Australian PicAStar group created. Note that
this board required very small device wiring, it is the first time that I have
NOT been able to successfully hand-solder something. So, I am going to use
other techniques to finish this board. Note the nice-looking display shown. See
this site for the driver board:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a href="http://www.carnut.info/tftpcb/tft.htm">http://www.carnut.info/tftpcb/tft.htm</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I purchased and used a different 480x272 display at first,
made by “Truly”. It is a 4.3inch display, and has eight bits per
RGB. It uses about 12V for the backlight, I just fed 12V via a series
(current-limiting) resistor. I think szdigitalsquare is a good seller. The
display sells for $50, with free shipping. You may want to add insurance…
I like this display as it includes the touchscreen in the display itself, and
uses only one connector for everything. I have NOT used the touchscreen part yet
in any of these displays.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://cgi.ebay.com/4-3-Truly-TFT-LCD-Module-Display-Touch-Panel-Screen-/190382222565?pt=LH_DefaultDomain_0&hash=item2c53aa2ce5">http://cgi.ebay.com/4-3-Truly-TFT-LCD-Module-Display-Touch-Panel-Screen-/190382222565?pt=LH_DefaultDomain_0&hash=item2c53aa2ce5</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Note that this next link is one that I haven’t tried,
but it looks an awful lot like the Truly mentioned above. The costs is certainly
OK at $29. Not known if it IS the same…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://cgi.ebay.com/4-3-TFT-LCD-module-touch-screen-MP4-MP4-ARM-GPS-/220618203386?pt=LH_DefaultDomain_2&hash=item335ddea0fa">http://cgi.ebay.com/4-3-TFT-LCD-module-touch-screen-MP4-MP4-ARM-GPS-/220618203386?pt=LH_DefaultDomain_2&hash=item335ddea0fa</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Here is the 640x480 LCD display that I ended up using, 5.6inch
size, made by Innolux. It uses only six bits per RGB, but was easy to
interface because of the fairly “standard” 640x480 signal timings.
I used the same FPGA VGA timing generator, and just changed the hardware
connections in my FPGA ucf file (user contraints file). It uses only 5V for
the backlight, I put a small value resistor in series with a 5V supply. In one
instance, I have even used a tap off an unused USB port. You are supposed to
have the display running before applying backlight voltage, so I manually hook
it up last right now. I plan to add a power switch to enable/disable the
backlight power. It costs more, at $55, plus another $35 for shipping. There
is at least one other ebay vendor selling the same display. I am now more
aware of buyer feedbacks, and virtolight was good when I bought mine. It takes
about 3 weeks to come from <st1:country-region w:st="on"><st1:place w:st="on">China</st1:place></st1:country-region>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://cgi.ebay.com/5-6inch-INNOLUX-TFT-LCD-Module-AT056TN53-V-1-640x480_W0QQitemZ290371142570QQcategoryZ26206QQcmdZViewItemQQ_trksidZp4340.m263QQ_trkparmsZalgo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D10%26pmod%3D280580644058%26ps%3D63%26clkid%3D4707399469668409505">http://cgi.ebay.com/5-6inch-INNOLUX-TFT-LCD-Module-AT056TN53-V-1-640x480_W0QQitemZ290371142570QQcategoryZ26206QQcmdZViewItemQQ_trksidZp4340.m263QQ_trkparmsZalgo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D10%26pmod%3D280580644058%26ps%3D63%26clkid%3D4707399469668409505</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>There are a few vendors on ebay that sell a small connector
board that includes space for a 40-pin connector, and connects to standard
dual-row .1inch connector. Mouser sells a similar board, with the 40-pin
connector presoldered, at $10. Mouser part # 763-NHD-FFC40, made by NewHaven.
These connectors have tiny, close-spaced pins, so using this board simplifies
prototyping.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>A Google search on each display model number will eventually
yield links to datasheets in PDF, and not from datasheets.com, but real
datasheets. I can provide more info as necessary to play with these displays.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Here is the JTAG programmer that I bought to use with Xiling
FPGAs. Note that you do NOT need this for the Digilent boards, but helps with
the Sparkfun and other Xilinx FPGA boards. Note also that “jtag”
is about as standard as RS232! Every different vendor that uses “jtag”
has a different interpretation as far as the programmer goes. While the jtag
signals are standardized, pinouts of jtag connectors are not! And, neither are
the programmers. gr2009 was another good ebay seller in my experience. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://cgi.ebay.com/Xilinx-FPGA-CPLD-USB-download-Cable-JTAG-New-HW-Design_W0QQitemZ200538724085QQcategoryZ163866QQcmdZViewItemQQ_trksidZp4340.m263QQ_trkparmsZalgo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D10%26pmod%3D260635746553%26ps%3D63%26clkid%3D5766617644110559282">http://cgi.ebay.com/Xilinx-FPGA-CPLD-USB-download-Cable-JTAG-New-HW-Design_W0QQitemZ200538724085QQcategoryZ163866QQcmdZViewItemQQ_trksidZp4340.m263QQ_trkparmsZalgo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D10%26pmod%3D260635746553%26ps%3D63%26clkid%3D5766617644110559282</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Several other Chinese vendors sell the same JTAG programmer,
just check the vendor feedback!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The Gabotronics tiny oscilloscope, here is the link. The
scope does not have any amplifiers or attenuators, so it is range limited.
Around 200mV p-p gives about ½ screen vertical deflection, and it works fine at
over 3V p-p, and it seems to max out at about 10V p-p.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://www.gabotronics.com/development-boards/xmega-xprotolab.htm">http://www.gabotronics.com/development-boards/xmega-xprotolab.htm</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>More info as I get it, or others ask.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Terry<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
</div>
</body>
</html>