Prototyping Wearables with Javascript and MetaWear

by Lance Gleason

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Introductions

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Twitter @lgleasain Github lgleasain www.lancegleason.com www.polyglotprogrammincinc.com [email protected]

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http://www.polyglotprogramminginc.com/purr- programming-2-0/

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Software

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Software

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Software

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Software

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Software

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Options

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Features

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Features • Bluetooth Support

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Features • Bluetooth Support • Robust API for Android and IOS

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Features • Bluetooth Support • Robust API for Android and IOS • Built in Sensors (temperature, accelerometer etc.)

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Features • Bluetooth Support • Robust API for Android and IOS • Built in Sensors (temperature, accelerometer etc.) • Built in support for rechargeable batteries

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Specs

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Specs • ! Nordic Semiconductor nRF51822 BLE SoC

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Specs • ! Nordic Semiconductor nRF51822 BLE SoC • ! 2.4 GHz transceiver

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Specs • ! Nordic Semiconductor nRF51822 BLE SoC • ! 2.4 GHz transceiver • ! ARM®Cortex™-M0 32 bit processor

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Specs • ! Nordic Semiconductor nRF51822 BLE SoC • ! 2.4 GHz transceiver • ! ARM®Cortex™-M0 32 bit processor • ! 256 kB ﬂash program memory

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Specs • ! Nordic Semiconductor nRF51822 BLE SoC • ! 2.4 GHz transceiver • ! ARM®Cortex™-M0 32 bit processor • ! 256 kB ﬂash program memory • ! 16 kB RAM

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Specs • ! Nordic Semiconductor nRF51822 BLE SoC • ! 2.4 GHz transceiver • ! ARM®Cortex™-M0 32 bit processor • ! 256 kB ﬂash program memory • ! 16 kB RAM • ! 8/9/10 bit ADC

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Specs Continued

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Specs Continued • Accelerometer

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Specs Continued • Accelerometer • Temperature Sensor

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Specs Continued • Accelerometer • Temperature Sensor • Push Button Switch

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Specs Continued • Accelerometer • Temperature Sensor • Push Button Switch • Bright LED

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Specs Continued • Accelerometer • Temperature Sensor • Push Button Switch • Bright LED • Driver for vibration motor

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Specs Continued • Accelerometer • Temperature Sensor • Push Button Switch • Bright LED • Driver for vibration motor • micro usb chargable

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Specs Continued • Accelerometer • Temperature Sensor • Push Button Switch • Bright LED • Driver for vibration motor • micro usb chargable • I2C bus, and support for 4 digital/analog and 4 digital pins

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Cons

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Cons • Really Small

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Cons • Really Small • Tough to write custom drivers

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Cons • Really Small • Tough to write custom drivers • Proprietary

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Bluetooth

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Bluetooth • Same Frequency range as 2.4 Gigahertz Wiﬁ

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Bluetooth • Same Frequency range as 2.4 Gigahertz Wiﬁ • 79 Channels VS 13

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Bluetooth • Same Frequency range as 2.4 Gigahertz Wiﬁ • 79 Channels VS 13 • Less Throughput

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Bluetooth LE

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Bluetooth LE • Always off

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Bluetooth LE • Always off • Less Throughput

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Bluetooth LE • Always off • Less Throughput • Often lower transmit power

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Bluetooth LE • Always off • Less Throughput • Often lower transmit power • Designed for low data low power Applications

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IOS

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IOS • IPad 3rd Generation or better

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IOS • IPad 3rd Generation or better • Iphone 4S or greater

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Android

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Android • Bluetooth 4.0 supported radio

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Android • Bluetooth 4.0 supported radio • Android 4.3 or greater

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Cordova

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Cordova • Uses the webview

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Cordova • Uses the webview • Ability To Package Applications

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Cordova • Uses the webview • Ability To Package Applications • Access to sensors, camera etc.

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Cordova • Uses the webview • Ability To Package Applications • Access to sensors, camera etc. • No need to learn native development

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Twitter @lgleasain Github lgleasain www.lancegleason.com www.polyglotprogrammincinc.com [email protected]