FEATURES
- Bluetooth Low Energy
- Espruino JavaScript interpreter pre-installed
- nRF52832 SoC – 64MHz Cortex M4, 64kB RAM, 512kB Flash
- 8 x 0.1″ GPIO (capable of PWM, SPI, I2C, UART, Analog Input)
- 9 x SMD GPIO (capable of PWM, SPI, I2C, UART)
- ABS plastic rear case with lanyard mount
- Silicone cover with tactile button
- MAG3110 Magnetometer
- IR Transmitter
- Built in thermometer, light and battery level sensors
- Red, Green and Blue LEDs
- NFC tag programmable from JavaScript
- Pin capable of capacitive sensing
- Weight: 14g in plastic case, 20g in packaging
- Dimensions of cardboard box: 64mm x 62mm x 16mm
- Dimensions of plastic case: 36mm dia, 12.5mm thick
- Dimensions of bare PCB: 29mm dia, 9mm thick
ON-BOARD LEDS, BUTTON AND GPIO
LEDs
- Red LED on: digitalWrite(LED1,1), Off: digitalWrite(LED1,0)
- LED2 : green, LED3: blue
- LED1.write(1) or LED1.write(0)
- LED1.set(), LED1.reset()
- 3개의 LED 한꺼번에 제어 digitalWrite([LED3,LED2,LED1], 7)
Button
- digitalRead(BTN) or BTN.read()
- 버튼 상태를 Polling 하는 것은 power 소모가 심하므로, setWatch 함수를 사용해서 버튼 상태가 바뀌는 것을 체크함.
setWatch(function() { console.log(“Pressed”);}, BTN, {edge:”rising”, debounce:50, repeat:true});
GPIO pins
- GPIO 핀은 D0 부터 D31까지. digitalWrite/digitalRead 커맨드를 사용할 수 있고 PWM, I2C, SPI and Analog 사용 가능
ON-BOARD PERIPHERALS
- Magnetometer
- IR / Infrared
- NFC – Near Field Communications
- Light sensor
- Bluetooth
- Temperature
- Battery level
- Capacitive sense
- SERIAL CONSOLE
FIRMWARE UPDATES
via nRF Toolbox App (Android & iOS)
- On your Bluetooth LE capable phone, install the nRF Toolbox app
- Download the latest espruino_xxx_puckjs.zip file from the binaries folder
- Reset Puck.js with the button held down – the Green LED should be lit
- Release the button within 3 seconds of inserting the battery – the Red LED should light instead. If it doesn’t, you’ll need to try again, holding the button down for less time after inserting the battery.
- Open the nRF Toolbox app
- Tap the DFU icon
- Tap Select File, choose Distribution Packet (ZIP), and choose the ZIP file you downloaded
- Tap Select Device and choose the device called DfuTarg
- Now tap Upload and wait. The LED should turn blue and the DFU process will start – it will take around 90 seconds to complete
Espruino IDE 사용하기
- Web Bluetooth 사용 설정: Mac에서 BLE가 지원되는지 확인하는 법은 “이 Mac에 관하여” > 시스템 리포트 > 하드웨어 > Bluetooth 항목아래 ” Bluetooth 저에너지 기술이 지원됨” 이 “예”라고 표시되어 있는지 확인한다.
- 크롬에서 주소표시줄에 chrome://flags를 입력하고, ” #enable-web-bluetooth” 항목을 사용하도록 설정하고 브라우저를 다시 시작함.
- https://www.espruino.com/ide/ 에서 Web IDE를 시작한다.
- Web IDE에서 연결 버튼을 클릭하고, Port설정에서 Web Bluetooth를 선택한다.
