Here’s a T.I.P. (Thought In Progress)….
Suppose I want to geek out on any given day and take my Tricorder out for a walk, or ride somewhere with it by mass transportation etc., and I want to hear all the audio SFX sounds, Logs, etc….and so I’m faced with, how do I not disturb those around me in my travels (unless I want to demonstrate the Tricorder to others, even strangers)….well wouldn’t it be nice if TWC had designed an Audio Out jack feature to plug-in a corded headphone(s) mono (L or R) single earbud for a mono wired jack…(since the Tricorder only has one mono speaker), or ‘mock stereo’ wired mono x2 on a stereo jack to both earbuds (L+R) ???
Well here’s an overall overview of this idea ….. using existing graphics I came across and now modified by me.
Below, is the TWC simplified functional block diagram. I’ve removed part of the output line (orange), between the Audio Out of the hood Audio circuitry (No. 6) directly to the speaker. I’ve added No. 19 an Audio Out jack, with an audio line (green) representation between the speaker, new audio jack, and the output line (orange) of the hood audio.
(Lines on this Block Diagram, in general, represents multiple wires and connections but not to the level of many more connections to PCB’s which are many)
View attachment 1949207
Below to the left, is what the end result would conceivably look like …
The 3.5mm Audio Jack (Mono or Stereo) is shown mounted to the lower portion of the Tricorder back panel itself. Yes! You’ll have to drill a hole in the back panel plus the Safety Panel (cover) for new added wires and Audio Jack barrel length.
View attachment 1949218
Below, the copper tape will have to be peeled back to expose the wires (specific colors of speaker wires is presently unknown by me) leading to the speaker so they can be cut, adjusted, and spliced with new wires. You will not have to go into the Hood…since the speaker wires are laying against the aluminum side and exposed for cutting.
You can see that once you remove the Safety Panel (my words) it appears there’s enough room in the power charging PCB area to accommodate the installation of the Audio Jack and associated new wiring with some slack to pull back the back panel of the Tricorder for any other reasons.
View attachment 1949209
CAUTION: At this time this is a Conceptualized Overview …I have not researched Devil in the Details specifics…i.e. Is there enough amplification power from the Audio circuitry No. 6, to drive a single or set of earbuds? Is additional noise reducing shielding needed for the new wires leading to the Audio Jack connector because of its proximity to the power circuitry and PCB…etc. None of these or more have been tested and it is left to the modifier to research and resolve if needed at all.
The BOM (Bill of Materials) will vary…..depending on the specifications of materials used. When it comes to the Audio Jack itself and different panel mounting versions, rely on the Data Sheets for the specific part you may be interested in because dimensions will differ.
In the U.S. sources for all parts needed should be found at Digi-Key, Mouser Electronics, Newark…possibly others.
Here’s a helpful tutorial on….
Audio Jacks Basics
Well, there’s enough info here for those who have DIY electronic projects experience and ingenuity, to make this modification to your Tricorder if you so desire.
Happy Private Listening in Public
Btw….you can store earbuds in the lower compartment when not in use
Good Luck