Updated CH340G board

luca 17/07/2017 2

Some weeks ago I blogged about my project of a minimal board based on the CH340G chip.

After some tests, I slightly modified the project:

  • I added two leds that blink when data are transmitted/received
  • I added a jumper that allows to decide if you want power supply (5V) in the connector or not
  • added a 10nF capacitor to make the circuit more stable.

Eagle files in my Github repository have been updated.

Here are some photos of the new PCB (the purple color should tell you that it was manufactured by OshPark):


The new board with all the components and a comparison with the first version:





  1. zoobab 18/08/2017 at 18:34 - Reply

    Too bad not all the pins are exposed, such as RTS, CTS, RI, etc…

    • luca 19/08/2017 at 10:41 - Reply

      Hi! I’m working on a new ver with RTS exposed so you can reset and program an Arduino board…

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