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
5Pcs A87 4 Channel Optocoupler Isolation Module High And Low Level Expansion Board
$17.08Other Module BoardAdd to cartDescription 1. Function:Use the low level to control the high level. Such as the use of single-chip 3V or 5V voltage control 9V or 12v voltage. 2. HVCC should not exceed 24V. Output OUT1 / OUT2 / OUT3 / OUT4 output current equal to HVCC / 5.1K, absorption current 500ma. 3. This module uses TLP281 …
5Pcs A87 4 Channel Optocoupler Isolation Module High And Low Level Expansion BoardRead More
3pcs DC 3.3V To 20V 5.8GHz Microwave Radar Sensor intelligent Trigger Sensor Switch Module
$16.24Sensor & Detector ModuleAdd to cartDescriptionIt uses Doppler radar technology, with auto-sensing capabilities to control other product,High sensitivity, sensor distance, reliability, wide angle sensor,Wide supply voltage range and other characteristics. Widely used in lighting situations,anti-theft alarm situations.Features1. microwave sensors using planar antenna and receiving echo.2. The switch is active sensors.3. The sensors emit a high-frequency electromagnetic waves and receives their …
3pcs DC 3.3V To 20V 5.8GHz Microwave Radar Sensor intelligent Trigger Sensor Switch ModuleRead More
24V Air Parking Heater Flame Sensor Igniters Flame Detecter 82306B for Webasto Air top 2000
$70.86Solar CollectorsAdd to cartSpecificationsBrand Name:AutoleaderMaterial:Silicon NitrideOEM:82306BItem weight:11gFeaturesThis product is mainly made of silicon nitride ceramic substrate, with tungsten filament as the heat source, tungsten wire embedded in silicon nitride matrix, via hot-press sintering process to form an organic whole, then through grinding, welding wire, thus made the ignition components.Fitmentfor Webasto Air Top 2000Package Included1x Parking Heater Senser
L293D WiFi Smart Robot Car Motor Driver Expansion Board Dual High Power H Bridge Based on ESP12E
$9.79Expansion Board & ShieldAdd to cartL293D WiFi Smart Robot Car Motor Driver Expansion Board Dual High Power H Bridge Based On ESP12E For Specifications 1. Motor power (VM):4.5 ~ 36V 2. Control power (VIN):4.5V ~ 9V(10V MAX) 3. Provide the shortcut connector (short by VM and VIM), thus can use 4. May use common power source (4.5V~9V) by shorting VM …
220V 1000W Hot Plate Electric Iron Burner Heating Stove Heater Household Laboratory Heating Equipments
$52.64Laboratory Heating EquipmentsAdd to cartSpecificationsType:Electric Stove BurnerPlug Type:EUColor:WhiteVoltage:220VPower:1000WRegulating temperature:5 LevelsMaterial:Stainless Steel + IronSize:14*14*5CM (5.5*5.5*2in)Features– Adopted iron shell, thicken panel, material sturdy and durable to use– Portable single burner with 500 watts of power– Powered by electric, do not need fuel, eco-friendly– Easy-to-use temperature-setting knob for low, medium, or high heat– Provides quick and sustained heat; power indicator light– Single …
Reviews
There are no reviews yet.