How to add live escapement audio to a Weishi timegrapher: a guide

 In my previous post here https://www.blogger.com/blog/post/edit/1111331671787346124/4208845159537743819 I made a box that allows connecting a Weishi timegrapher's microphone to a computer or powered speaker. That can be very useful for long term recoridng and diagnostics by using some timegrapher application on a PC.

 Now I'm explaining how to add live audio of the escapement to a Weishi. The resons are the same as before: the pre-recorded audio of the Weishi limits usefulness and I don't want to spend 3000 euros on a pro-level timegrapher.

What's needed:

• GX 16 3 pin male to female Y splitter. The male end connects to the timegrapher speaker, one female end goes to the timegrapher and the other to the speaker.
  
  
  
  
  
   
  
  
   
   
   
• GX 16 3 pin male adapter. Two of these pins will connect to the AUX cable.
  
  
  
• Speaker AUX cable. This is a bog-standard 3.5mm speaker jack.
• A speaker with AUX input. I got a cheap one from AliExpress and it works fine. A wireless speaker will reduce desk clutter. 

How to:

1. Keep wires relatively long as feedback can be an issue. 
2.  Cut out one of the AUX cable's ends so that you're left with one male AUX end and the other end with bare wires.
3. Figure out the wiring for the tip and sleeve, i.e the top and bottom parts of the connector. The middle part, the ring, is not needed. In my case red was tip and blue was sleeve and the extra cable wasn't needed.
4. Connect pin 1 of the GX 16 adapter (blue wire) to the AUX cable's tip wire (red).
5. Connect pin 2 of the GX 16 adapter (brown wire) to the AUX cable's sleeve wire (blue).
6. Connect AUX to the speaker, microphone to the Y splitter and Y spliiter to both the timegrapher and the GX16 adapter.

 

 

 

 And a recording of the result with live escapement audio from a movement, EB 1333 in this case. You can even hear an escapement problem in my recording that corresponds to issues in the graph.