4.3" Touchscreen Thread Consolidation Test
NOTE: FROM WBA CONSULTING:
This thread was copied on 6/3/2011 from the 677 post long thread on Rayman's 4.3" Touchscreens, so I can consolidate the key information in efforts to begin using the displays and breakout boards I have. This was the only way I could come up with to not spend days going through the original thread that is 34* pages long.
*when using the forum's default settings. I have my settings at 50 posts per page, so it shows up as 14 pages long when I am logged in.
What I have done is remove the non-important posts (posts about orders, basic questions, non-pertinent comments, etc) and left the posts containing specs, pinouts, pictures, code snippets, code Zipfiles, breakout boards, and the like. I have also merged a few posts that are directly related to condense the thread length. This compacted thread is now heavily detailed and easy to peruse because it is only 170 posts long.
This thread will remain locked as any further comments on the 4.3" touchscreens should be on the original thread.
Many of you have asked for a touchscreen version of my PSM (Propeller System Module)...· I was in the middle of prototyping such a thing when (like mana from heaven) someone approached me with large quantities of very low cost 4.3" microreflective touchscreen LCD displays!· This was just too good of an opportunity to pass up, so I dropped everything to see if I could make this work...· Those of you at the Expo may have seen me happily·demonstrating a prototype board with functioning display.·
These displays will soon be for sale on my website.· There are two varieties:· "As New" and "Used".· The "As New" ones have had their touchpanels replaced and really are as good as new.·
These will cost ~$30 ("As New" displays being held for PSB boards).· The "Used" ones may have a few minor blemishes but will cost less.
Of course, there will soon be a board for it too, tentatively called PSB (Propeller System Board) [because it will be bigger with more stuff on it].· There may also be a barebones adapter to get this working at minimal cost...
I think you'll find that these displays are perfect for many applications...· They are large enough to use the touchpanel effectively for input, but not too big for embedded apps or controls.· The microreflective technology makes them ideal for indoor and outdoor use (you can see it in direct sunlight).·
I'm going to provide full details (schematics and code) on how to interface these displays to the Prop.··I have modified·the standard VGA driver so that we can show text and images on the display.
Here's a photo of my prototype with a test app that puts color bars on the display with 14 Hz refresh rate (slow because·not using the Prop's video generator).· The I2C touscreen controller is working as is the backlight controller.·
Also, I post the datasheet again here.· Note that these are from a very large, well-known company.··(But,·it's better for them if I don't use their trademarks or logos when advertising these, so I'm not using their·name and I've redacted company specific info from the datasheet.)·
Update:··Now taking orders, but price for "used" screen is now $18...
If you wish to order some (limit·3 per person), send an email to firstname.lastname@example.org with your address and Qty. desired.
Breakout boards are $30 (also, I can only fit 5 LCDs if you get a breakout board)
Connectors are $1 each...
Shipping within US is $5 (via USPS Priority Mail).···Email me regarding larger quantities...
Revised source code for Paint and VGA demo apps on page 10!
Breakout board schematics and layout on page 4!
More information is posted on my website:
My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
Post Edited (Rayman) : 12/20/2009 1:13:54 PM GMT