Adafruit KB2040 – RP2040 Kee Boar Driver 微型控制板

商品說明

這是一個閃亮的 KB2040！帶有 RP2040 的用於 Keebs 的 Arduino Pro 微型板。 (#keeblife 4 evah) 很多人喜歡在他們的 Keeb 構建中使用 Adafruit 部件——但由於 ItsyBitsy 與 Pro Micro 引腳不兼容，如果沒有某種轉接板，這真的不是很容易。 現在我們看到很多人將 CircuitPython 用於 keebs，這太棒了！那麼為什麼不試試我們的 RP2040 板呢？ RP2040 功能強大，成本低廉，是一款出色的 keeb 驅動芯片。 我們將我們最喜歡的 SparkFun Pro Micro RP2040（Qwiic / STEMMA QT I2C 端口在末端，太好了！）和 Elite-C（用於 D+ 和 D- 的齒形焊盤和引腳）和我們現有的 RP2040 板（引導按鈕可用於用戶、8MB QSPI 閃存、板載 NeoPixel、用於跳過大功率 RGB LED 或 USB 託管的二極管/保險絲的跳線）。我們甚至將其全部安裝在具有 7/7 佈線的 2 層 PCB 上—只需要製作最小的電容和電阻 0402。

板子上有 20 個可用的 GPIO（18 個在齒形引腳上，2 個在 STEMMA QT 端口上），您可以輕鬆製作多達 100 個鍵的矩陣，或常見的 65% 5×15 佈局。 使用隨插即用 QT 電纜連接到最後兩個引腳，無需進行任何拆焊。

規格：

• Same size and form-factor as a Pro Micro breakout and nearly-identical pinout (this board has fewer analog pins, for example)
• Measures 1.3″ x 0.7″ without headers soldered in
• RP2040 32-bit Cortex M0+ dual core running at ~125 MHz @ 3.3V logic and power. 264 KB RAM, No EEPROM. 12 MHz crystal for perfect timing.
• 8 MB SPI FLASH chip for storing files and CircuitPython/MicroPython code storage.
• 20 x GPIO pins with following capabilities:
  • 18 GPIO on castellated/pin breakout pads. 2 GPIO on QT port that can be easily accessed for 5×15 keyboard layouts.
  • Four 12 bit ADCs
  • Two I2C, Two SPI and two UART peripherals, we label one of for the ‘main’ interface in standard Pro Micro locations
  • 16 x PWM outputs – for servos, LEDs, etc
  • The 10 digital non-ADC GPIO are consecutive for maximum PIO compatibility
• RGB NeoPixel for colorful status indiction
• Classic green power LED
• Both Reset button and Bootloader select button for quick restarts. Bootloader button is also available as a generic GPIO input button.
• STEMMA QT connector on the end is compatible with the SparkFun Qwiic I2C connector, and can be used to plug and play I2C devices, or just as 2 extra GPIO pins.
• 3.3V regulator with 500mA peak current output
• RAW output, for powering NeoPixels or other 5V devices. Jumper on bottom lets you skip over the 500mA fuse, for up to 2A from USB ports.
• USB Type C connector lets you access built-in ROM USB bootloader and serial port debugging
• Extra D- and D+ breakouts for alternative USB connection options.

RP2040 Datasheet:  https://datasheets.raspberrypi.org/rp2040/rp2040_datasheet.pdf

RP2040 Chip features:

• Dual ARM Cortex-M0+ @ 133MHz
• 264kB on-chip SRAM in six independent banks
• Support for up to 16MB of off-chip Flash memory via dedicated QSPI bus
• DMA controller
• Fully-connected AHB crossbar
• Interpolator and integer divider peripherals
• On-chip programmable LDO to generate core voltage
• 2 on-chip PLLs to generate USB and core clocks
• 30 GPIO pins, 4 of which can be used as analog inputs
• Peripherals
  • 2 UARTs
  • 2 SPI controllers
  • 2 I2C controllers
  • 16 PWM channels
  • USB 1.1 controller and PHY, with host and device support
  • 8 PIO state machines

Product Dimensions: 35.0mm x 17.8mm x 4.9mm

教學WIKI：Primary Guide: Adafruit KB2040