Find a Retailer SHOP PRODUCT MENU LEARN BLOG find products, tutorials, etc... HOME / P R O D U C T C A T E G O R I E S 0 SUPPORT LOG IN EDUCATION Need Help? REGISTER FORUM / CAPACITIVE / SPARKFUN CAPACITIVE TOUCH BREAKOUT - AT42QT1011 SparkFun Capacitive Touch Breakout AT42QT1011 S E N - 1 4 5 2 0 ROHS 6 DESCRIPTION DOCUMENTS If you need to add user input without using a button, then a capacitive touch interface might be the answer. The AT42QT1011 SparkFun Capacitive Touch Breakout offers a single, momentary capacitive touch button with easy-to-use digital I/O pins. The AT42QT1011 is a dedicated, single-button capacitive sense chip. The chip handles monitoring a conductive area for touch. As long as a touch (e.g., from a finger) is detected, the AT42QT1011 keeps the output line high. Otherwise, the line is kept low. You just need to provide a power source (1.8V--5V) and ground for the AT42QT1011 to work. Additionally, a PAD pin is available if you would like to create your own external electrode. Unlike its sibling, the AT42QT1011 does not have an internal time-out, meaning that if you hold your finger to the breakout's pad for any length of time, it will stay on. The difference between the AT42QT1010 and the AT42QT1011 is small but may be a game changer depending on your project's uses. GET STARTED WITH THE AT42QT101X CAPACITIVE TOUCH GUIDE images are CC BY 2.0 Tags SHARE AT42QT1011 BREAKOUT CAPACITIVE SENSOR TOUCH SparkFun Capacitive Touch Breakout - AT42QT1011 Product Help and Resources TUTORIALS VIDEOS AT42QT101X Capacitive Touch Breakout Hookup Guide SKILLS NEEDED Interactive 3D Printed LED Diamond Prop APRIL 19, 2018 JANUARY 25, 2018 Learn how to use the simple SparkFun AT42QT1010 and AT42QT1011 capacitive touch breakout boards. In this tutorial, we will learn about how to create an interactive theatrical prop for a performance by 3D printing a translucent diamond prop using a nonaddressable RGB LED strip and AT42QT1011 capacitive touch sensing. COMMENTS 3 REVIEWS 6 Customer Reviews 4.3 out of 5 Based on 6 ratings: 5 star 5 4 star 0 3 star 0 2 star 0 1 star 1 Currently viewing all customer reviews. It works very well in my application about 2 years ago by Member #293611 verified purchaser The AT42QT1011 worked right out of the box hooking up +5 volts and ground. Bringing the finger close to the button triggered the LED on as expected. My application employs a PIC microcontroller programmed in assembly language. Most of the time the PIC stayed triggered while the finger was held on the button. Once in a while it would drop out. I investigated the output of the breakout with an oscilloscope and found periodically a downward spike lasting about 16 microseconds. In looking at the datasheet I discovered that device has a HeartBeat "health" indicator superimposed on the its output. This puts the output into a three-state mode for 15 microseconds periodically. The breakout circuit must pull this line down to +0.6 volts during the three-state mode. This will not cause any problems in most applications and once we know about it we can work around it if we have to. It was an interesting investigation and it helped me to learn more about the chip. I have oscilloscope pictures if interested. It works as advertised and the low cost is great about 2 years ago by Member #653742 verified purchaser I needed something to replace a push button switch on my new project. This item exceeded my expectations, because it can detect a light finger tap through a plastic case, which simplifies my design. Thanks to the small size, it fits inside the existing case, and the low cost makes it possible to replicate the project and sell it at a profit. Easy to use, responsive, well-built and sexy! about 2 years ago by Member #1269173 verified purchaser This capacitive touch breakout is awesome. Dead-simple to use, looks amazing and with the ability to work through thin layers of plastics, the perfect addition to your next project. You're going to want more than one. Do yourself a favor and buy at least 3 of these guys. no title about 2 years ago by Member #1128258 verified purchaser works as advertised, well made, great instructions Sensor completely inaccurate. Constant Phantom Signals about a year ago by Member #1399338 verified purchaser This sensor is giving me many problems, many because of its irregularity in the signal. It constantly shows phantom signals, which makes it almost useless. I do not understand how they can sell a button so badly designed or at least provide a solution!. Would you be interested in oscilloscope readings, could you share them here with a link? Thank you! CF replied on September 25, 2018: Hello and thank you for your review. We have found these boards to be very reliable and it's possible that something in your setup or the board itself may have an issue. Please contact our support team for assistance with your troubles and they will be happy to help you. Works great to sense occupancy in a seat through ~2mm of plastic about a year ago by Member #454028 verified purchaser Have been using this sensor to detect the presence of an occupant sitting in a chair. The sensor is placed beneath the seat so is invisible to the occupant. It has been working reliably as specified. I first purchased a similar sensor from Adafruit... unfortunately this was the AT42QT1010 (not the 1011 like this one). The 1010 is designed to reset its zero after ~60 seconds of continuous "presence". This doesn't work for my application, as an occupant may remain for more than 60s. This product (the AT42QT1011) states in the datasheet that it doesn't have this feature, and indeed, it has been working perfectly for the last few weeks in my application. START SOMETHING. Email address SUBSCRIBE TO NEWSLETTER ABOUT SPARKFUN PARTNER WITH US SUPPORT SITE INFORMATION Read Our Story See Our Partners Customer Support Terms of Service Press & Media Become a Distributor/Reseller Purchase Orders & Payment Privacy Policy SparkFun Education Receive Volume Discounts Terms Compliance Job Openings Build a Custom Kit Technical Assistance Site Map Apply for a Hardware Donation FAQs Contact Us SparkFun Electronics (R) / 6333 Dry Creek Parkway, Niwot, Colorado 80503 Questions? Feedback? powered by Olark live chat software