SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-28T16:03:38-06:00SparkFun Electronicsgiantsfan3 on SEN-07918 - Capacitive Sensor Board - AD7746 Breakoutgiantsfan3urn:uuid:7394d5bb-6658-db43-48a4-7edaed706d842013-06-18T23:34:17-06:00<p>Even though this product has been retired, would you please be able to put up the Eagle board layout or Gerber files for this? I am having a bit of trouble creating the touch sensor portion using Eagle.</p>
davev on SEN-07918 - Capacitive Sensor Board - AD7746 Breakoutdavevurn:uuid:b38e24c9-2894-e898-d2c6-b147175310142010-10-26T14:10:55-06:00<p>This chip is better suited as a capacitance sensor, not a plug and play capacitive touch button. If you want to integrate a capacitive touch button into a project, id recommend the "MPR121 Capacitive Touch Sensor Breakout Board" which has touch recognition built into the chip.<br>
This chip requires you to write your own touch recognition algorithm.</p>
davev on SEN-07918 - Capacitive Sensor Board - AD7746 Breakoutdavevurn:uuid:518a2d7a-396c-b9ab-cb07-8d2251a820412010-10-26T14:05:10-06:00<p>That's not a rotary sensor though, it's a differential capacitive sensor</p>
RobertC. on SEN-07918 - Capacitive Sensor Board - AD7746 BreakoutRobertC.urn:uuid:7823444c-2c17-b5dd-0f14-e3c900614c222010-08-30T10:32:46-06:00<p>Yep, it's scored and comes off very easily.</p>
ddd999 on SEN-07918 - Capacitive Sensor Board - AD7746 Breakoutddd999urn:uuid:c7993543-4985-0ac6-faf2-02af26dab3092010-08-29T14:20:32-06:00<p>I don't have one of these but in the photo it looks like the sensor is V-scored where it attaches to the main board, so it would be easy to snap off. If not a hacksaw or aviation snips will work.<br>
The sensor will work with a thin piece of plastic on top. See Analog Devices AN-854 for an excellent guide to capacitive touch sensing and sensor PCB design: <a href="http://www.analog.com/static/imported-files/application_notes/AN_854.pdf" rel="nofollow">http://www.analog.com/static/imported-files/application_notes/AN_854.pdf</a></p>
MisterFuzzy on SEN-07918 - Capacitive Sensor Board - AD7746 BreakoutMisterFuzzyurn:uuid:8c0b7430-9648-9090-5d68-da44a5e8e58f2010-08-02T18:44:08-06:00<p>Does the rotary sensor break away from the rest of the board??? And can I place plastic in front of it to hide it, and still have it run correctly?</p>
aalias on SEN-07918 - Capacitive Sensor Board - AD7746 Breakoutaaliasurn:uuid:07ac00aa-abfe-3142-74ce-f4980fbb2f8b2010-02-09T13:16:48-07:00<p>Nate;<br>
Thanks for this breakout board!<br>
And thanks to MarcusInteractive-Matter for doing major part of the leg-work in accessing the chip by putting his Arduino code on the web.<br>
So, how about upgrading this breakout board to allow for differential capacitance sensing (like using both Cin+ and Cin- pins for each channel)?<br>
It will make this board even more versatile...<br>
Thanks!</p>
MarcusInteractive-Matter on SEN-07918 - Capacitive Sensor Board - AD7746 BreakoutMarcusInteractive-Matterurn:uuid:c2702773-12f9-b979-4b70-277bc8d552882009-07-21T04:23:00-06:00<p>If you want to hook this baby up with arduino expect some tricky issues. Check my <a href="http://interactive-matter.org/2009/07/arduino-ad7746/" rel="nofollow">Capacitive Sensing Guide for AD7746 & Arduino</a></p>