5Pcs MPR121-Breakout-v12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board
$24.54
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Description
This is a breakout board for Freescale’s MPR121QR2. The MPR121 is a capacitive touch sensor controller driven by an I2C interface.
The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode. The MPR121 also features eight LED driving pins. When these pins are not configured as electrodes, they may be used to drive LEDs.
There a four jumpers on the bottom of the board, all of which are set (closed) by default. An address jumper ties the ADD pin to ground, meaning the default I2C address of the chip will be 0x5A. If you need to change the address of the chip (by shorting ADD to a different pin, make sure) you open the jumper first. Jumpers also connect SDA, SCL and the interrupt pin to 10K pull-up resistors. If you don’t require the pull-up resistors you can open the jumpers by cutting the trace connecting them.
There is no regulation on the board, so the voltage supplied should be between 2.5 to 3.6VDC. The VREG pin 2.5 and is connected through a 0.1uF capacitor to ground, which means, unless you modify the board, you can’t operate the MPR121 in low-supply voltage mode (1.71-2.75VDC).
Package included
5 x MPR121-Breakout-v12 Proximity Capacitive Touch Sensor Board
Weight | 0.02 kg |
---|
Customers Also Viewed
300W Digital Amplifier Speaker Protection Board 2.1 Channel Relay Speaker Protection Module Boot Delay DC Protection
$15.30Relay ModuleAdd to cartFeatures1.With delay and DC protection (default 1.8V control, DC sensitivity can be adjusted)2. This common power DC protection board uses an optocoupler. Since the optocoupler has input and output isolation,3. Electrical signal transmission has the characteristics of unidirectionality, so it has good electrical insulation and anti-interference ability.4. Since the input end of the optocoupler belongs …
AB18 2SA1943/2SC5200 High Power 300W + 300W Dual Channel Class A/B Power Amplifier Board for Sound Speaker DIY
$125.17Amplifier BoardAdd to cartProduct description1. Using Japan imported original brand new 2SA1943/2SC52002. Electrolytic capacitor adopts imported electrolysis to ensure strong continuous power support.3. The resistor uses high-precision resistors, and the main circuit uses high-precision resistors with an accuracy of ÷ 1% to ensure a good signal-to-noise ratio for the whole machine.4. The PCB adopts 1.6mm thick double-sided sheet, …
5pcs DMP-L1 WiFi intelligent Lighting Module Built-in ESP ESP8285 WiFi Chip for Smart Home
$28.82Smart ModuleAdd to cartDescriptionThe core processor of DMP-L1 module adopts industrial chip ESP8285. The chip integrates an enhanced version of the Tensilica’s L106 Diamond Series 32-bit core processor in smaller size packages. ESP8285 has a complete Wi-Fi network function, which can be used independently from the controller. Its built-in cache memory greatly provides CPU performance.DMP-L1 module supports standard …
5pcs DMP-L1 WiFi intelligent Lighting Module Built-in ESP ESP8285 WiFi Chip for Smart HomeRead More
Wareshare 5.5 inch AMOLED HDMI Display Capacitive Touch Screen with Tempered Glass Support for NVIDIA Jetson Nano Raspberry Pi
$229.66Display ScreenAdd to cartDocumentsManual:Click here to openDatasheet:Click here to openSoftwarePanasoni SDFormatterWin32DiskImagerPuTTYOverviewThis product is a universal 5.5-inch HDMI display with 1080≠1920 ultra-clear resolution and a capacitive touch panel. Support for Raspberry Pi and various mini PCs, also as a computer monitor.Features5.5inch AMOLED, 1080×1920 resolution.Toughened glass capacitive touch panel.Supports popular mini PCs such as Raspberry Pi, as well as general …
5pcs 20x20x15mm DIY CPU IC Chip Heat Sink Extruded Cooler Aluminum Heat Sink
$4.36Electronic Accessories & SuppliesAdd to cartFeatureAluminum heat sinks for electronics, computers, electrical facilities, play a cooling effectSpecificationMaterials:AluminumSize:20*20*15mm (L*W*H)Color:SilverQty:5pcsPackage includes5 x CPU IC Chip Aluminum Heat Sink
5Pcs Yellow Backlight 1602 Character LCD Display Module
$24.89Display ScreenAdd to cartDescriptionLCD display module with yellow backlightWide viewing angle and high contrastBuilt-in industry standard HD44780 equivalent LCD controllerCommonly used in:copiers, fax machines, laser printers, industrial test equipment,networking equipment such as routers and storage devicesLCM type:CharactersCan display 2-lines X 16-charactersOperate with 5V DCModule dimension:80mm x 36mm x 12mmViewing area size:64.5mm x 16mmPackage included5 X LCD display module
Bathtub Caddy Bamboo Bath Tub Holder Bathroom Tray Glass Book Reading Rack Stand
$106.76FoamAdd to cartSpecificationMaterial:BambooColor:WoodSize:(L)X(W)X(H)105X22X4cm/41.34inchX8.66inchX1.57inch(appr.)Features1. Constructed from durable bamboo and metal supporting frame in excellent craftsmanship for many years use.2. Varnish processing on surface, lightweight and easy to operate.3. Books can be held with metal rack stably for reading when bathing.4. Books, phone, towl, and food can be placed on it for convenient reach.5. Its length is adjustable between …
Bathtub Caddy Bamboo Bath Tub Holder Bathroom Tray Glass Book Reading Rack StandRead More
Reviews
There are no reviews yet.