To try and keep track of past revisions and the major changes between the versions here is a list of past releases and some of the things that have changed.

• QuinLED-ESP32
  • Version 1
    • Revision 2
      • 2021-03
        • Initial release version
    • Revision 3
      • 2021-07
        • Changed EN capacitor to higher value for better chance of auto flash mode succes
  • Version 2
    • Revision 1
      • 2023-03
        • Redesign to address an issue with a voltage regulator that would sometimes die after a few hours of operation since a certain batch of chips
          • Fully re-designed voltage regulator stage with a beefed up LDO
            • Much larger package for improved heat dissipation
            • Keeps 750mA onboard PTC and reverse feed diode protection
            • Extra stabilization of power stage to prevent brownout situations often seen on generic ESP32 dev boards
        • Changed USB-to-Serial converter to newer and smaller type
          • Still CH340 based
        • Changed chip used for auto flash mode support
        • Raised value of EN capacitor even more to slow down for better succes rate on slower PCs
        • Added Blue LED on GPIO2
    • Revision 2
      • 2023-07
        • Changed board from 2 layer to 4 layer
          • To help with potential EMI issues for certification