Grove – 12 Key Capacitive I2C Touch Sensor V3 (MPR121) 電容式I2C觸摸感測器 seeed原廠

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Grove – 12 Key Capacitive I2C Touch Sensor V3 (MPR121) 電容式I2C觸摸感測器 seeed原廠

NT$333 NT$280 未稅

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商品說明

Grove – 12 Key Capacitive I2C Touch Sensor V3 (MPR121) 電容式I2C觸摸感測器

Grove-12鍵電容式I2C觸摸感測器V3(MPR121)是一款多通道接近式電容式觸摸感測器。這是一個三合一模塊,具有以下功能,電容感測:此模塊使用恆定的直流電流電容感測方案。它可以測量範圍從10 pF到超過2000 pF的電容,分辨率高達0.01 pF。 觸摸感應:獲取電極電容數據後,即可將電極觸摸/釋放狀態與電容基線值進行比較,以確定其狀態。 該感測器基於飛思卡爾MPR121,具有12個完全獨立的電極,具有內置自動配置功能。借助I2C接口,您僅用一個Grove電位器就可以檢測所有12個電極信號,並且I2C地址是可在0X5B到0X5D範圍內配置的硬件。這也使得可以將多個Grove -12鍵電容式I2C觸摸感測器V3(MPR121)一起用於單個系統中的通道擴展,您可以構建一個最多包含36個電極的觸摸系統。 該傳感器是Grove-12鍵電容式I2C觸摸傳感器V2(MPR121)的升級版,它在頭部增加了兩個GND端口,以便更穩定,同時,前部引腳的間距更大,從而避免了線路意外接觸引起的短路。

特徵

  • 內部10位ADC
  • 對每個電極輸入進行集成的獨立自動校準
  • 完全獨立的電極,內置自動配置 
  • I2C接口,帶有IRQ,中斷輸出以建議電極狀態變化
  • 硬件可配置的I2C地址
  • 12個電極/電容感應輸入,其中8個多功能用於LED驅動和GPIO
  • 自動配置每個電極輸入的充電電流和充電時間
  • 每個電極的觸摸和釋放跳閘閾值分開,從而提供磁滯和電極獨立性
  • 再增加兩個GND引腳並擴大引腳間距以安全處理

應用

  • PC外圍設備
  • MP3播放器
  • 遙控器
  • 手提電話
  • 照明控制

規格

Dimensions 60mm x 20mm x 7mm
Weight G.W 11g
Battery Exclude
Operating Voltage 3.3 V / 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 address range 0x5B,0x5C,0x5D
Default I2C address 0x5B

Documents

 

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Grove – 12 Key Capacitive I2C Touch Sensor V3 (MPR121)

The Grove – 12 Key Capacitive I2C Touch Sensor V3 (MPR121) is a multi-channel proximity capacitive touch sensorIt’s a 3-in-1 module with the following features: Capacitance Sensing. Tough 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.
Based on Freescale MPR121, this sensor has 12 completely independent electrodes with build-in autoconfiguration. Thanks to I2C interface, you can detect all the 12 electrodes signals with only one Grove pott 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 V3 (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 – 12 Key Capacitive I2C Touch Sensor V2 (MPR121), it adds two more GND ports to the head in order to be more stable, meanwhile, the front Pin are spaced more widely so as to avoid a short circuit caused by the lines accidentally touch.

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
  • Add two more GND pin and expand the gap of pins for safe handling

Typical Applications

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

Pin Map

Technical details

Dimensions 60mm x 20mm x 7mm
Weight G.W 11g
Battery Exclude
Operating Voltage 3.3 V / 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 address range 0x5B,0x5C,0x5D
Default I2C address 0x5B

Part List

  • Grove – 12 Key Capacitive I2C Touch Sensor V3 (MPR121) X 1
  • Grove Cable X 1