TouchKey 2 Click – MikroElektronika Four Capacitive Pads
TouchKey 2 click has four capacitive pads powered by Microchip’s ATtiny817 which has an integrated touch QTouch® controller. The click is designed to run on a 3.3V power supply. The four LEDs onboard the click indicate when the Key (Pad) is pressed. TouchKey 2 click communicates with the target microcontroller over UART interface (SPI interface is optional).
High moisture tolerance
You can use TouchKey 2 click in all kinds of conditions, without fearing something will happen to it due to moisture and water droplets falling on it.
The plastic overlay on the TouchKey 2 click protects the board from moisture. Thanks to this feature the electronic components are safe. The ATtiny817 has a driven shield for improved moisture and noise handling performance.
ATtiny817 features
Microchip’s ATtiny817 is a microcontroller that uses an 8-bit AVR® processor with hardware multiplier, running at up to 20MHz and with up to 8KB Flash, 512 bytes of SRAM and 128 bytes of EEPROM.
ATtiny817 uses the latest technologies from Microchip with a flexible and low power architecture including Event System and SleepWalking, accurate analog features and advanced peripherals.
Capacitive touch interfaces with proximity sensing and driven shield are supported with the integrated QTouch® peripheral touch controller.
The module supports wake-up on touch from power-save sleep mode.
Button features
Capacitive buttons can be toggled even when placed under a layer of glass or paper.
How it works
There are four LEDs for four touch keys. If key A is pressed LED_A is ON, etc. In addition, there is UART communication between ATtiny817 and main MCU.
Note: The header onboard the TouchKey 2 click can be used for device programming. Current firmware sends data packets via UART (on which the demo example in our library is based). SPI communication is possible with firmware modifications.
Specifications
| Type | Capacitive |
| Applications | A replacement for mechanical buttons |
| On-board modules | ATtiny817 from Microchip |
| Key Features | Four capacitive touch pads, 3.3V power supply, protective plastic overlay |
| Key Benefits | High moisture tolerance |
| Interface | GPIO,SPI,UART |
| Input Voltage | 3.3V |
| Compatibility | mikroBUS |
| Click board size | L (57.15 x 25.4 mm) |
Downloads
- mikroBUS™ Standard specification
- ATtiny817 datasheet
- TouchKey 2 click schematic
- LibStock: TouchKey 2 click library
Fast Shipping and Professional Packing
Through our long-term relationship in a long-standing partnership with UPS, FedEx, DHL and many other top global carriers we can provide a variety of shipping options. Our warehouse employees will pack every item to our exacting specifications. The goods you send us are checked thoroughly and secured properly prior to shipping. Everyday we deliver thousands of packages to customers across many countries. The fact that we're committed to becoming the biggest online retailer in the world is clear. Both Europe as well as the USA have warehouses and distribution centres.
Orders that contain more than one item are assigned processing times in accordance with the item.
We will inspect each and every one of the items ordered before shipping. Today, most orders will be shipped within 48 hours. The delivery time should be between 3-7 days.
Returns
The stock market is always changing. It's not entirely managed by us, since we have multiple organizations, such as the factory and our storage. Stock levels can fluctuate at any given time. Please understand it may happen that your order will be out of stock after the order is placed.
The policy is for 30 days. If you have passed 30 days in the past since you purchased, unfortunately we can't offer you a refund or exchange.
To be eligible for a refund, your item must be in good condition and in the same state that you received it. The item must be in the original packaging.
Related products
SparkFun Qwiic
IR Distance Adapter
Phidgets IR Distance Adapter for Sharp Sensors – 1101_0 Phidgets
Electronic Brick
Electronic Brick – Touch Sensor/Button Brick Module Itead Studio
Touch Sensor
Range Finder
