Are There any Intelligent Lo Cost Touch Screen Dsiplay for PICC MCU's? - Page 1
Forum section: electronics / projects

author: SuzyC
author_rank: Frequent Contributor
timestamp: January 26, 2016, 02:37:01 pm
content: I would really like to find a small, low-cost LCD display with a cap touch screen for displaying menus (in english) for my robotic projects.Has anyone tried Allibaba? I can't seem to find one cheaply on ebay.The idea l LCD:Have a capacitive touch screen, but a resistive touch screen is acceptable.Some color ok, but ok for it to be just Monochrome.Text menu's should be quite readable,I don't give a damn about graphics, does not have to be fast to update display.Small, 3-7 inch max H or WShould not have a Chinglish unfathomable datasheet, but must have some source of how to program/ HW interface the thing!Clear example code to initialize display.Should allow at least 25 readable chars/line without scrolling.Built in font.Require little data ram.Low PowerSimple to interface with serial or 8-bit parallel HW using PICC C code.No complex 10 zillion pin connectors, no hard to find ZIF to flex PCB with .2mm spacing, just through hole, solder pads, or Bed of Nails.Must be able to display at least 5-10 lines of text without scrolling.Low Cost, uhmm like USD 25 would be the sweet spot of my purse.Cheap $20 cellphones can do this..why can't i?

author: prasimix
author_rank: Unknown
timestamp: January 26, 2016, 04:17:09 pm
content: Mabye TFT_320QVT could satisfy your requirements. Just search for that keyword od ebay and similar. It's now below 8 GBP (free shipping). Picture ishere.

author: andy1
author_rank: Contributor
timestamp: January 26, 2016, 04:52:01 pm
content: I dont know if it fits your application from point of view of power (about 100mA for 3.3V operation on smaller models)but Nextionhttp://wiki.iteadstudio.com/Nextion_HMI_Solutioncould be one, I have few of them I am going to use in projects(none yet ready) and the editor is workable plus the interface is standard serial with selectable baudrates.Small 3.2" ones are around 14$, only resistive touchscreen so not as nice as capacitive ones.

author: prasimix
author_rank: Unknown
timestamp: January 26, 2016, 05:13:05 pm
content: Quote from: andy1 on January 26, 2016, 04:52:01 pmLooks very nice, with on board GPU and serial port it can save a tons of I/O lines and MCU time/memory. Thanks for sharing.

author: SuzyC
author_rank: Frequent Contributor
timestamp: January 28, 2016, 03:49:19 pm
content: Thanks for the Disp. tip!It seems that Nextion is the only player in the hobbyist intelligent display game, or at least the only one not demanding outrageous prices and a complicated HW interface. Farnell, for example only starts to offer something similar at 3 to 30x Nextion prices.The software provided seems to provide an easy way to imbed it into a MCU design, even if I have to endure some Chinglesh.I ordered their 4 inch model, hope it doesn't get lost in the Chinese mail system due to the Chinese New Year only a few days away.Why are the Chinese so consistent (i.e. Rigol, Nextion) in not allowing some English speaking person edit their English language use. They seem not to care that Chinglesh is so prevalent in their software, documentation, ebay postings and their websites!Even Translate.google or Translate.com or Microsoft Word spellcheck could correct their grammar and spelling.

author: cdev
author_rank: Super Contributor
timestamp: January 28, 2016, 04:38:44 pm
content: Quote from: SuzyC on January 28, 2016, 03:49:19 pmI think, if the error is really bad and screams for correction, by all means, try to send them an email telling them.At older, more traditional companies, which might have few if any English speaking staff, at least in management, messages in foreign languages typically get filed in a folder and translated in batches by somebody who speaks English later. (often its one of the staff's grown up children.)Technical companies likely do have lots of English speakers. So the problem is gradually going away.