基于RP2040设计的支持Arduino Pro Micro规格的核心板:Sea-Picro
基于RP2040设计,支持Arduino Pro Micro规格。
标签
KiCad
嵌入式系统
RP2040
refdesignshare
更新2023-06-04
667

内容介绍

项目链接:Sea-Picro

基于RP2040设计,支持Arduino Pro Micro规格。

 

pcb render

两个不同版本:

  • EXT, featuring an Elite-C pinout, with dedicated 5V RGB LED pin, but without a reset button.
  • RST, featuring a pro micro pinout, with onboard RGB LED and reset button.

top of pcb render

top of pcb render

特色:

  • Compatiable with most pro micro based keyboards
  • RP2040 microcontroller, with dual M0+ processors at up to 133MHz
  • Mid mount USB-C connector, which is low profile and can't be ripped off
  • Optional Elite-C style pinout, adding an additional 5 IO for large keyboards
  • Single button reset / bootloader circuit which changes behavior based on how long it's held (RP2040 usually requires two buttons to flash new firmware, making it challenging when installed upside down in a keyboard)
  • ROM bootloader which prevents board from being bricked
  • EXT version has a 5V level shifter and extra pin to drive strings of WS2812 LEDs.
  • RST version has a WS2812 LED for use with CircuitPython or as a status indicator on the RST version.
  • Onboard power LED.
  • IO pinout identical to the Sparkfun RP2040 Pro Micro

annotated pinout of PCB

reset circuit schematic

文档:https://joshajohnson.com/sea-picro/#documentation

 

物料清单

附件下载

sea-picro-schematic.pdf
KiCad设计的原理图
SeaPicro_HW.zip
KiCad设计的工程文件

团队介绍

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