Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Inexpensive touch panel based on ESP8266 and MPR121
07-14-2017, 08:20 PM
Post: #1
Inexpensive touch panel based on ESP8266 and MPR121
Yet another project we are developing at this moment:
http://www.panstamp.com/news/12-key-touc...66-mpr121/

Daniel Berenguer
http://www.panstamp.com
Visit this user's website Find all posts by this user
Quote this message in a reply
07-19-2017, 11:25 PM
Post: #2
RE: Inexpensive touch panel based on ESP8266 and MPR121
As nice to have, but close to indispensable add-on, I'd see a 8-pin connector for a nokia 3310 LCD (or maybe a ST7735 color one ? Your choice)
Find all posts by this user
Quote this message in a reply
07-20-2017, 05:14 PM
Post: #3
RE: Inexpensive touch panel based on ESP8266 and MPR121
Good one @tochinet. The current prototype includes a port for driving one of those big LED panels but it's too bulky and difficult to control. I was more thinking about an I2C LCD for the next version. The ST7735 uses SPI I think but this is something to consider as well, even if natural SPI lines are already taken by the external flash.

Daniel Berenguer
http://www.panstamp.com
Visit this user's website Find all posts by this user
Quote this message in a reply
07-23-2017, 12:22 AM
Post: #4
RE: Inexpensive touch panel based on ESP8266 and MPR121
I2C LCDs were prohibitively expensive when I looked at them some years ago. 3310 is really common and cheap (<2EUR). Apparently there are now cheap I2C as well, but they are smaller (<1" for 128x64 resolution, vs 1.5" for 84x48 resolution for 3310) so more difficult to read. But it's your take.
Find all posts by this user
Quote this message in a reply
Post Reply 


Forum Jump:


User(s) browsing this thread: 1 Guest(s)