3Pcs MPR121-Breakout-v12 Proximity Capacitive Touch Sensor Controller Keyboard Development Board
$16.16
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
3 x MPR121-Breakout-v12 Proximity Capacitive Touch Sensor Board
Weight | 0.012 kg |
---|
Customers Also Viewed
LILYGO TTGO T-Watch SIM800L Bottom Programable PCB Expansion Board for Smart Box Development
$27.49Expansion Board & ShieldAdd to cartFeaturesDevelopment platform:ESP-IDF (native SDK), , Lua, MicroPython, ScratchSupport SIM card mobile communication functionSupport microphoneSupport voiceSupport for scalable module useCode:Click here to openESP32:Characteristic:DescriptionGPIO05:CS:Screen, TFT_CSGPIO18:SCLK:Screen, TFT_SCLKGPIO19:MOSI:Screen, TFT_MOSIGPIO27:DC:Screen, TFT_DCGPIO12:BL:Screen, TFT_BLESP32:Characteristic:DescriptionGPIO33:TX:SIM Card, UART_SIM_TXGPIO34:RX:SIM Card, UART_SIM_RXGPIO14:RST:SIM Card, SIM_RSTGPIO15:PWKEY:SIM Card, SIM_PWKEYGPIO04:BOOST:SIM Card, SIM_BOOST_CTRLPackage includes1 x T-Watch SIM800L PCB backplane1 x AntennaWiring with the T-watch box, for reference only, the T-watch does …
50 Pieces Fountain Pens Holder Wooden Pen Display Case with Antique Color Container 5 Layer
$278.83PhysicsAdd to cartSpecificationsColor:ArchaizeMaterial:Wood Box + Plexiglass CoverSize(L x W x H):about 270*200*245mm[Conversion:1mm=0.03937 inch, 1inch=25.4 mm]Features-Large pen cases, 50 mounted large-capacity, generous and practical design.-Wood box and beige color flannel inside, clear and elegant.-Durable without deformation, glass shatterproof, can be clearly seen.Package Included1 PCS x Wooden Pen Case(Pen not included)Note-Due to different producing batches, product details might be …
50 Pieces Fountain Pens Holder Wooden Pen Display Case with Antique Color Container 5 LayerRead More
220V 700W Powered Portable Electric Air Space Heater Fast Heating thermostat Hot
$58.71Solar CollectorsAdd to cartFeatures-The popular choice for heating bathrooms as well as kitchens.-Overheat protect.-Adjustable thermostat.-Handy carry handle.-Easy to adjust manual controls.-Anti-fire safety protection and are simple to install.Specification-Size:260mm*95mm*160mm-Rated voltage:220V-Colour:White-Rated power:700W-Mode of operation:mechanical-Rated power:700w-Switch type:knob type-Applicable area:21-30m2Package list-1x electric heater
50PCS 5ml Plastic Sample Small Bottle Vial Storage Container Test Tube for Lab
$24.29Bottles & JarsAdd to cartDescription50PCS 5ml Plastic Test Tube Centrifuge Tubes Bottle With Cap For Lab Supplies,Used to plug a flask or testtube for safe keeping. Test Tube. Used to mix, heat, or store substances.SpecificationMaterial:PPContain:5mlWeight:100g(50PCS)Color:TransparentQuantity:50pcsDiameter:14mmHeight:42mmFeatures1.Plastic cryogenic vial.2.Made from PP with good temperature resistance and sealing property.3.Various capacity with clear scale marked,easy to use.4.Self stnading design,no slide when using.5.Smooth side …
50PCS 5ml Plastic Sample Small Bottle Vial Storage Container Test Tube for LabRead More
3pcs 40W DC-AC inverter Power Supply 12V Liter 220V Step Up Transformer Boost Module Support in Parallel
$20.68Power Supply ModuleAdd to cartFeature1. Output DC and AC dual output, can output DC and AC voltage, fully compatible with all kinds of electric appliances2. Without connecting wires, you need to solder the input and output wires yourself.3. Instructions for use:This product can convert the DC power of 8V-13V battery into 220V AC power for household use, and DC …
45Pcs Solar intelligent Watering Timer Automatic Drip Irrigation + 10M Hose + Solar Panel + Copper Filter Nozzle
$109.34Electrical Relay & TimersAdd to cartFeatures> IP67 Waterproof> Indoor or oytdoor use.> Use clean water only.> Automatic water your plants and flowers precisely and at ease.> Reduce water by 70% over traditional sprinklers by focusing water directly to the root.> Flowers, plants, bonsai and potted fruit, for family homes, hotels, clubs, offices and other plants of intelligent care.> Watering the …
10Pcs 3W 5V LED Module Board High Power Module
$26.08LED BoardAdd to cartFeatureColor temperature:Warm White 3000-3200K / white 6000-6500KForward current:700MALuminous flux:White 180-200LM (lumens) , Red 90-100LM (lumens) , Green 80-90LM (lumens)Forward voltage:3.3 – 3.6 VReverse voltage:5VPower:3WViewing angle:180Working temperature:-20 to 60Storage temperature:20 to 60test cod (Click here)Package included10 x LED module
Reviews
There are no reviews yet.