August 7

K40 Moshi V4.7 Board trace out

I was interested in how the board in my new K40 laser cutter was laid out and functioned.

A mystery chip is always a puzzle that can be fun to crack :)



Very simple design. Although they could have used more of the  error checking on the CH314A.  Best discovery is the possibility of there being a uart port to exploit :D  Sadly all but 1 of the pins on the mystery chip are used and nothing traces out to anything useable for extra end stop switches.

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Posted August 7, 2014 by Moogle in category "Electronics", "Laser cutter


  1. By Miguel Sanchez on

    Very interesting info, I only miss one of the direction pins to be able to remove the processor and adapt an Arduino Pro micro with GRBL (a new brain for less than $2!!).

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