Add a Serial port to the LS MINI



=Background= Apparently there are two traces that have been interrupted which would allow serial port access.

These traces have been interrupted UNDER a SMD capacitor at position C54. Junker (see Yamasita's article/reference) discovered the way first. Apparantly the pinheaders from the SCON-KIT/ PRO can be fit into the case quite easily as well.

Laitr Keiows and Johnbock duplicated his efforts

=Method= First take it apart:
 * Disassemble the LS MINI

Then you will need to find some way to resurrect the traces that are interrupted under C54.

C54
We need to fix these wires which go under C54:

Method 1: reconstruct the traces (on the backside)
This method requires absolutely no soldering.


 * 1) Lay a layer of a scotch tape between holes, just not to cover them.
 * 2) Use a strand of high flexible low oxygen copper wire.
 * 3) Thread it through both holes.
 * 4) Fix it with a scotch tape on the back side.
 * 5) Cut remainders on the front side, leaving about 2 mm.
 * 6) Repeat from step 2 with the second thread.
 * 7) Be sure not to shorten anything else.

Method 2: Bridge the traces (on the frontside)
This method requires a steady hand and good soldering skills.

Use two strands of high flexible low oxygen copper wire.
 * 1) Locate and carefully remove C54 from its pads.
 * 2) Clean the area with rubbing alcohol and a tiny brush.
 * 3) Cut two stands of high flexible copper wire to length.
 * 4) Solder each of the strands to the vertically aligned pads.
 * 5) Resolder C54 to its' original position.
 * 6) Ensure no shorting has take place while soldering.

Use a Level Shifter
=Serial Port Output=

LS Mini: Serial Port Output - Boot-Log

=References=