!! Seeeduino XIAO ボード Arduino MKR シリーズの同等品らしい [amazon|https://amzn.to/2ZSpFzy] [秋月|http://akizukidenshi.com/catalog/g/gM-15178/] を試してみる ( 1個600円くらい ) ! TOP https://wiki.seeedstudio.com/jp/Seeeduino-XIAO/ ! Spec https://cdn.sparkfun.com/datasheets/Dev/Arduino/Boards/Atmel-42181-SAM-D21_Datasheet.pdf https://wiki.seeedstudio.com/Seeeduino-XIAO/#specification https://wiki.seeedstudio.com/Seeeduino-XIAO/ ARM Cortex M0+ CPU (SAMD21G18) 48MHz DAC 10-bit, 350ksps Digital-to-Analog Converter (DAC) ADC One 12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 20 channels Differential and single-ended input 1/2x to 16x programmable gain stage Automatic offset and gain error compensation Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution って書いてあるが__arduino では 10bit ぽい。。 https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html ! arduino ide の変更 File > Preference, https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json を追加 ! KICAD https://wiki.seeedstudio.com/Seeeduino-XIAO/ ! PINassign ,,,,pin,USB-TypeC,pin,, ,DAC,D0,A0,1, ,14,VIN(5v) , ,D1,A1,2, ,13,GND , ,D2,A2,3, ,12,3V3 , ,D3,A3,4, ,11,A10,D10,MOSI ,SDA,D4,A4,5, ,10,A9 ,D9 ,MISO ,SCL,D5,A5,6, ,9,A8 ,D8 ,SCK ,TX ,D6,A6,7, ,8,A7 ,D7 ,RX I2C:SDA/SCL SPI:MOSI/MISO/SCK UART:TX/RX 5V:500mA 3V3:200mA DAC:10bit ADC:12bit (10bit ?? ) Onbord LED [P]緑色   電源が入ると点灯します。 [L]黄色   デジタル13番(LED_BUILTIN)出力で点灯/消灯できます。   リセット時に点滅します。 [R]青色   UART-RX通信の受信時に点灯します。   デジタル12番(PIN_LED2)出力で点灯/消灯できます [T]青色   UART-TX通信の送信時に点灯します。   デジタル11番(PIN_LED3)出力で点灯/消灯できます。 ! Reset USB コネクタの近くのPADをショート ( 短く2回ショートすると bootloader モード ) ! Firmata として使う PRG-Firmata-XIAO ! シングルサイクルIO https://lab.sasapea.mydns.jp/2020/03/16/seeeduino-xiao/ !ADC https://lab.sasapea.mydns.jp/2020/06/11/atsamd21-adc/ ! Python https://circuitpython.org/board/seeeduino_xiao/ https://learn.adafruit.com/circuitpython-essentials Source https://github.com/adafruit/circuitpython https://github.com/Adafruit/CircuitPython https://learn.adafruit.com/circuitpython-essentials/circuitpython-essentials https://wiki.seeedstudio.com/jp/Seeeduino-XIAO-CircuitPython/ https://qiita.com/fujioka244kogacity/items/da5842a4c6b7b68ce29c !SubModules https://github.com/adafruit/Adafruit_CircuitPython_Bundle.git git clone https://github.com/adafruit/Adafruit_CircuitPython_Bundle.git cd ./Adafruit_CircuitPython_Bundle sh ./update-submodules.sh MU が Serial で接続しない ./mu/mu/modes/circuitpython.py" 43行目 付近に (0x239A, None), # Any Adafruit Boards + (0x2886, 0x002f), # Seeeduino XIAO # Non-Adafruit boards (0x1209, 0xBAB1), # Electronic Cats Meow Meow を追加 !裏面のPA30/PA31 を使う https://qiita.com/nanase/items/37ecca24aee8fbd4492e ! ToolChain https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm ! GIT https://github.com/adafruit/circuitpython/releases/tag/6.2.0 https://github.com/adafruit/Adafruit_CircuitPython_Bundle.git ! Tips https://wiki.seeedstudio.com/Seeeduino-XIAO/#software https://qiita.com/nanase/items/0fed598975c49b1d707e https://qiita.com/nanase/items/37ecca24aee8fbd4492e https://github.com/adafruit/circuitpython/releases/tag/6.2.0 https://wiki.seeedstudio.com/jp/Seeeduino-XIAO/ https://learn.adafruit.com/circuitpython-essentials https://lab.sasapea.mydns.jp/2020/03/16/seeeduino-xiao/ https://lab.sasapea.mydns.jp/2020/06/11/atsamd21-adc/ https://101010.fun/iot/arduino-frequency-counter.html !SubModules https://github.com/adafruit/Adafruit_CircuitPython_Bundle.git ! 制作記事 *[周波数カウンタ|https://101010.fun/iot/arduino-frequency-counter.html] ! ssd1309 ( 2.42 inch OLED ) https://nuneno.cocolog-nifty.com/blog/2017/08/oledssd1309-296.html ! SSD1306 https://2kuru.com/seeeduino-xiao_oled/ https://www.denshi.club/pc/python/circuitpython/circuitpython-10-step2-2-oled.html