Grove – 12 鍵 電容式 I2C MPR121 觸摸感測器模組 V2 版本
原始價格：NT$310。NT$280目前價格：NT$280。 (未稅)
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Grove – 12 鍵 電容式 I2C MPR121 觸摸感測器模組 V2 版本
Grove – 12 鍵 電容式 I2C MPR121 觸摸感測器模組 是一種多通道接近電容式觸摸傳感器。它是一個3合1模塊，具有以下功能：電容感應，觸摸感應和接近感應。
- 電容感應：該模塊使用恆定的直流電流電容感應方案。它可以測量從10 pF到超過2000 pF的電容，分辨率高達0.01 pF。
- 觸摸感應：一旦獲得電極電容數據，確定電極觸摸/釋放狀態，將其與電容基線值進行比較。
- 接近感應： MPR121的一個新功能是近距離感應系統。這意味著所有系統的電極可以相加在一起以形成單個大電極。
Grove – 12 鍵 電容式 I2C 觸摸感測器模組 基於飛思卡爾MPR121，具有12個完全獨立的電極，內置自動配置。借助I2C接口，您只需一個Grove端口即可檢測所有12個電極信號，I2C地址可通過硬件配置，從0X5B到0X5D。這也使得多個Grove-12鍵電容式I2C觸摸傳感器V2（MPR121）可以在單個系統中一起用於通道擴展，您可以構建一個包含最大值的觸摸系統。36個電極。
這款傳感器是Grove – I2C觸摸傳感器的升級版，為了滿足Matsuzawa.Takashi（我們的客戶之一）的需求，我們使I2C地址可以更改，甚至比舊版本更便宜。
模組特色
- 內部10位ADC
- 每個電極輸入的集成獨立自動校準
- 完全獨立的電極，內置自動配置
- I2C接口，帶有IRQ中斷輸出，用於建議電極狀態變化
- 硬件可配置的I2C地址
- 12個電極/電容傳感輸入，其中8個用於LED驅動和GPIO多功能
- 自動配置每個電極輸入的充電電流和充電時間
- 為每個電極分別觸摸和釋放跳閘閾值，提供滯後和電極獨立性
Grove – 12 鍵 電容式 I2C MPR121 觸摸感測器模組 典型應用
- PC外圍設備
- MP3播放器
- 遙控器
- 手機
- 照明控制
Pin地圖
Grove – 12 Key Capacitive I2C Touch Sensor V2 (MPR121)
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
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