SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T07:31:12-06:00SparkFun ElectronicsToni_K on SEN-12017 - SparkFun Capacitive Touch Keypad - MPR121Toni_Kurn:uuid:70f78f59-3a9a-60b8-5da7-0848985333462014-09-25T10:13:05-06:00<p>Honestly, probably not. That many variations of the same product usually don't sell well for us. However, we do have all the blue LEDs you could want and tutorials so you could hack the customization yourself ;)</p>
Customer #566450 on SEN-12017 - SparkFun Capacitive Touch Keypad - MPR121Customer #566450urn:uuid:2354dfba-f005-3718-437b-fa0cffb3f7512014-09-24T13:25:05-06:00<p>Any chance Sparkfun could offer a variant of these with illuminated keys (such as with blue LEDs on the back side shining through holes in the center of the keys)?</p>
Customer #60967 on SEN-12017 - SparkFun Capacitive Touch Keypad - MPR121Customer #60967urn:uuid:15ec03f4-198c-d6b4-a5e4-6bec31f434de2014-04-06T16:59:55-06:00<p>The hookup guide for this board didn't work for me when using the Pro Micro 3.3V. I eventually found another guide (https://learn.sparkfun.com/tutorials/mpr121-hookup-guide/communicating-with-the-breakout-board) which uses the wire.h library and it worked right away.</p>
miked13 on SEN-12017 - SparkFun Capacitive Touch Keypad - MPR121miked13urn:uuid:f93a0fed-1904-d491-6509-5a64c0b445592014-03-25T21:07:24-06:00<p>The Hookup Guide shows this hooking directly up to an Arduino Uno. The UNO I2C Pins are 5V aren't they? Shouldn't there be a Logic Level Converter Bi-Directional like your BOB-12009 in there between the UNO I2C pins and the Touch Sensor I2C pins?</p>
exuvo on SEN-12017 - SparkFun Capacitive Touch Keypad - MPR121exuvourn:uuid:a217ebf9-f6a6-1fd6-8c29-b23ff7ba4de92014-02-05T04:44:14-07:00<p>From AN3747: "The minimum pad size for Freescale’s products is 3 mm by 3 mm when using thin film overlays to about 0.5 mm thickness of acrylic or ABS plastic. The maximum pad size used for touch is about 15 mm by 15 mm. This thicker pad can be used with plastics of up to 3 mm thickness and still achieve consistent operation." .
From the image measurements the used pad size seems to be 13mm here.</p>
simcop2387 on SEN-12017 - SparkFun Capacitive Touch Keypad - MPR121simcop2387urn:uuid:184675ec-cf09-1263-096a-36f896b8437b2014-02-04T23:04:44-07:00<p>How sensitive is this board? I'd love to know if it could be behind some perspex or other plastic barrier and still pick up touches.</p>