http://forums.leaflabs.com/topic.php?id=1631 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:06:52 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1631#post-10638 Sun, 13 May 2012 19:01:15 +0000 x893 10638@http://forums.leaflabs.com/ <p>I use 2.8" TFT panel with touch</p> <p><a href="http://www.aliexpress.com/product-fm/528986978-Factory-offer-best-price-with-100-quality-assurance-2-8-inch-TFT-panel-with-touch-panel-wholesalers.html" rel="nofollow">http://www.aliexpress.com/product-fm/528986978-Factory-offer-best-price-with-100-quality-assurance-2-8-inch-TFT-panel-with-touch-panel-wholesalers.html</a></p> <p>with additional controller based on STM32F100C8. Serial interface and simplest protocol likes 4D Systems. Usually as standalone text terminal. Very cheapest and fully programmable. </p> http://forums.leaflabs.com/topic.php?id=1631#post-10625 Sat, 12 May 2012 06:23:10 +0000 Rei Vilo 10625@http://forums.leaflabs.com/ <p>Problem with those screens is the micro-controller does everything.</p> <p>A better solution consists on a screen with a built-in graphic controller, as the 4D Systems uLCD 32PT. So all the resources of the main controller remain available.</p> <p>It costs a little more but offers SD-card, touch, sound on top of colour LCD through one single UART serial connection.</p> <p>I've developed a library with GUI, Graphics and more. </p> <p>For documentation and training, code and examples, see <a href="http://embeddedcomputing.weebly.com/serial-lcd.html" rel="nofollow">http://embeddedcomputing.weebly.com/serial-lcd.html</a> </p> http://forums.leaflabs.com/topic.php?id=1631#post-10616 Fri, 11 May 2012 13:59:06 +0000 davideq 10616@http://forums.leaflabs.com/ <p>Figures, ordered 3.2" got 2.4". No data. Time to order one one from 2nd link. </p> http://forums.leaflabs.com/topic.php?id=1631#post-10465 Thu, 03 May 2012 05:41:09 +0000 davideq 10465@http://forums.leaflabs.com/ <p><a href="http://www.ebay.com/itm/180866254803?ssPageName=STRK:MEWNX:IT&amp;_trksid=p3984.m1497.l2649#ht_5890wt_914" rel="nofollow">http://www.ebay.com/itm/180866254803?ssPageName=STRK:MEWNX:IT&amp;_trksid=p3984.m1497.l2649#ht_5890wt_914</a> </p> <p>is the display I ordered. It should be here in 2 weeks to a month. They don't really provide any data so I don't think I would order the same one again. There was another one that was about a dollar more from another company that had full info examples I should have gotten, hind site is 20 20.</p> <p>This is the one with full data available<br /> <a href="http://www.ebay.com/itm/3-2-inch-TFT-LCD-Module-Display-320-x-240-with-Touch-Panel-SD-card-cage-/270954281581?pt=LH_DefaultDomain_0&amp;hash=item3f16223a6d#ht_5763wt_876" rel="nofollow">http://www.ebay.com/itm/3-2-inch-TFT-LCD-Module-Display-320-x-240-with-Touch-Panel-SD-card-cage-/270954281581?pt=LH_DefaultDomain_0&amp;hash=item3f16223a6d#ht_5763wt_876</a>.</p> <p>When I asked the fist seller about hookup info and examples all they said was "we test before ship". I contacted the 2nd guy and he sent me the link info for that one. I'm not real comfortable ordering from China (both vendors) but I guess its done a lot these days </p> http://forums.leaflabs.com/topic.php?id=1631#post-10461 Wed, 02 May 2012 23:33:00 +0000 crenn 10461@http://forums.leaflabs.com/ <p>davideq, can you provide a link to the screen that you bought, I am curious to what one you got. </p> http://forums.leaflabs.com/topic.php?id=1631#post-10459 Wed, 02 May 2012 17:23:07 +0000 davideq 10459@http://forums.leaflabs.com/ <p>I got a very similar display. The one thing I can say about there development boards is the look great. The yellow headers on the blue really pop andlook awesome. Leaf could take a peek and maybe get some make it look sexy for the new f4 versions. But that being said I will still get one if looks the same. </p> http://forums.leaflabs.com/topic.php?id=1631#post-10458 Wed, 02 May 2012 15:47:25 +0000 davideq 10458@http://forums.leaflabs.com/ <p>Thanks! </p> http://forums.leaflabs.com/topic.php?id=1631#post-10449 Tue, 01 May 2012 20:31:30 +0000 ala42 10449@http://forums.leaflabs.com/ <p>There is a download link with STM32 example code for this one, maybe you got the same: <a href="http://www.ebay.com/itm/3-2inch-320x240-Touch-LCD-A-Screen-Touch-SPI-ADS7843-LCD-SSD1289-TFT-LED-320-240-/250906574590?pt=LH_DefaultDomain_0&amp;hash=item3a6b327efe#ht_2588wt_1126" rel="nofollow">http://www.ebay.com/itm/3-2inch-320x240-Touch-LCD-A-Screen-Touch-SPI-ADS7843-LCD-SSD1289-TFT-LED-320-240-/250906574590?pt=LH_DefaultDomain_0&amp;hash=item3a6b327efe#ht_2588wt_1126</a> </p> http://forums.leaflabs.com/topic.php?id=1631#post-10445 Tue, 01 May 2012 13:44:56 +0000 davideq 10445@http://forums.leaflabs.com/ <p>I ordered a 3.2" board on ebay, its got a 16 bit bus and SD card frame. Hope I can figure it out or it's $19 wasted. It has a touch screen with chip to figure out too. I think I actually picked the wrong one, I think this one has little to no info included. Everything cones out on a dual row .1" 34 pin connector. </p> http://forums.leaflabs.com/topic.php?id=1631#post-10433 Mon, 30 Apr 2012 13:36:42 +0000 poslathian 10433@http://forums.leaflabs.com/ <p>Many of those screens have character sets an basic line drawing graphics built into the driver chips. For example the LCD-HUGE from sparkfun. This way for simple menu's you are not really rendering a full frame, but just sending text and position info over the serial line - in which case things are definitely fast enough. </p> <p>Many screens also have a selectable blanking so that you can draw to only a small portion of the screen at once rather than retransmit the entire frame, another great tool for menus. </p> <p>If you dont use either of these features and try and draw entire frames at a time, then you can always figure out your framerate by dividing the frame size by the transfer rate. </p> <p>You can get 1Mb/s out of the UART (serial) or the SPI on Maple without a lot of work (read - using libmaple and wirish, and not doing anything crazy on the layout). </p> <p>With some work you can go a lot faster (18Mb/s and maybe even 36Mb/s but that might require overclocking some of the peripherals). </p> http://forums.leaflabs.com/topic.php?id=1631#post-10428 Mon, 30 Apr 2012 09:28:02 +0000 davideq 10428@http://forums.leaflabs.com/ <p>Anyone working with these? Some come with a driver chip for the touch pad screen some don't. Some use one of the high speed serial ports (spa I2c forgot which). Is the serial solution fast enough for snappy menues. Does the touch driver really help if you have 12 bit ads available? And of course begging for code sample....<br /> One from solution hooks up with a 10 pin ribbon, but its setup for a .net board. </p>