GMMK REV4 - gloryhzw/qmk_tool GitHub Wiki

rev4 out since 2021/Nov, SN after SNSS12136 should be REV4.

• maintain 2x 17A SPI RGB controllers as rev3 (nice), but the MCU is changed from sonix 268 to CH555, not supported by Sonix QMK...(pretty bad)
• 28A = CH555, 8051 MCU, 8KB SRAM, 64KB Flash, pdf
  • http://www.wch.cn/products/CH555.html
  • http://www.wch.cn/downloads/CH555DS1_PDF.html
  • http://www.wch.cn/downloads/CH555EVT_ZIP.html
  • https://github.com/HorrorTroll/WCH_CH555

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• PCB https://cdn.discordapp.com/attachments/805578807477534754/908396068495052871/IMG_20211111_105731__01.jpg
• 17A https://cdn.discordapp.com/attachments/805578807477534754/908396068776050738/IMG_20211110_154555.jpg
• 28A https://cdn.discordapp.com/attachments/805578807477534754/908396069300351017/IMG_20211110_154520.jpg