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Grove - 12 Key Capacitive I2C Touch Sensor V2 (MPR121)(101020534
NT$400
運費NT$50
條碼7381
產品說明

※本產品原廠代理從國外進口,有些交期較長,下訂前請詢問!

Grove - 12 Key Capacitive 電容式 I2C Touch Sensor 觸摸傳感器 V2 (MPR121) (101020534)

Description

The Grove - 12 Key Capacitive I2C Touch Sensor V2 (MPR121) is a multichannel proximity capacitive touch sensor. It's a 3-in-1 module with the following features: Capacitance Sensing, Touch Sensing, and Proximity Sensing.

Capacitance Sensing: This module uses a constant DC current capacitance sensing scheme. It can measure capacitances ranging from 10 pF to over 2000 pF with a resolution up to 0.01 pF.

Touch Sensing: Once the electrode capacitance data is acquired, the electrode touch/release status is determined comparing it to the capacitance baseline value.

Proximity Sensing: One new feature of the MPR121 is the near proximity sensing system. This means that all of the system’s electrodes can be summed together to create a single large electrode.

Based on Freescale MPR121, this sensor have 12 completely independent electrodes with build-in autoconfiguration. Thanks to I2C interface, you can detect all the 12 electrodes signals with only one Grove port, and the I2C address is hardware configurable, from 0X5B to 0X5D. This also makes it possible for multiple Grove - 12 Key Capacitive I2C Touch Sensor V2 (MPR121) to be used together for channel expansions in a single system, you can build a touch system which contains max. 36 electrodes.

This sensor is an upgrade version of Grove - I2C Touch Sensor, to meet Matsuzawa.Takashi's(one of our customer) needs, we make the I2C address changeable, and even cheaper than the old version. So if you have any suggestions about all the Groves, please just shoot to us. We will always listen to your voice, it may make another upgrade, even a new grove. Please kindly write your suggestions in the Grove 100+ page.

Features

  • Internal 10-bit ADC
  • Integrated independent autocalibration for each electrode input
  • Completely independent electrodes with built-in autoconfiguration
  • I2C interface, with IRQ Interrupt output to advise electrode status changes
  • Hardware configurable I2C address
  • 12 electrodes/capacitance sensing inputs in which 8 are multifunctional for LED driving and GPIO
  • Autoconfiguration of charge current and charge time for each electrode input
  • Separate touch and release trip thresholds for each electrode, providing hysteresis and electrode independence

Typical Applications

  • PC Peripherals
  • MP3 Players
  • Remote Controls
  • Mobile Phones
  • Lighting Controls

Pin Map

Schemaitc

Power

Bi-directional level shifter circuit

Technical Details
Dimensions 60mm x 20mm x 7mm
Weight G.W 11g     N.W 5g
Battery Exclude
Operating Voltage 3.3V / 5V
Operating Temperature Range -40°C to +85°C
Storage Temperature Range -40°C to +125°C
Capacitances Range 10 pF to over 2000 pF
Resolution 0.01 pF
Interface I2C
I2C addrss range 0x5B,0x5C,0x5D
Default I2C address 0x5B

Part List

Grove - 12 Key Capacitive I2C Touch Sensor V2 (MPR121) 1
Grove Cable 1

ECCN/HTS

ECCN EAR99
HSCODE 9031900090

 

 

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本商品上架日期:2013-07-08.
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