User:Wordfa/oldphonehack: Difference between revisions

From XPUB & Lens-Based wiki
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'''Raspberry Pi'''
'''Raspberry Pi'''
'''TRS 3.5 Jack x2'''
'''Wire n stuff'''
'''old headphones with a mic (apple earpod style)'''


=== Things we done ===
=== Things we done ===


We took it apart and got the speaker to work. played show me the body, was good.
We took the phone apart and got the speaker to work by connecting the blue and red cables from the phone out to the audio jack to the soundcard to the computer. played show me the body, was good.


11 (Neg), 12(Pos) speaker output
[11 (Neg), 12(Pos) speaker output]


Then we tried the microphone but its carbon and it didnt work. so u atttached a batery and hoped. didnt work
Then we tried the microphone but its a carbon mic and it didnt work. so we atttached a battery and hoped. didnt work.


We took apart wired headphones that had mic in them to see if we could use the mic from it rather than the carbon mic in the telephone.
We took apart wired headphones that had mic in them to see if we could use the mic from it rather than the carbon mic in the telephone.
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didnt work, headphone calble is trrs not trs:
didnt work, headphone calble is trrs not trs:
<img src="https://wiringall.com/image/trrs-to-trs-wiring-diagram-7.jpg" width="300px">
<img src="https://wiringall.com/image/trrs-to-trs-wiring-diagram-7.jpg" width="300px">


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Connect the Red (mic) to Pin (Ring) 1 or 2 of the TRS
Connect the Red (mic) to Pin (Ring) 1 or 2 of the TRS
MAKE SURE THE HEADPHONES CONNECTION IS CLOSED!
[[File:Signal-2024-11-07-192445.jpg|thumb|The wiring used]]




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=== Weird Stuff ===
=== Weird Stuff ===
how does a carbon mic work


https://wonderfoon.jimdosite.com/
https://wonderfoon.jimdosite.com/


https://www.youtube.com/@ruudshangout/search?query=t65
https://www.youtube.com/@ruudshangout/search?query=t65

Revision as of 19:36, 7 November 2024

Phone Hacking Project

Project for SS25 to create a story gathering system using an old phone.

T65 Rotary Phone bought by Sevgi n' Fred

Parts Required

USB interface to 3.5mm

https://www.adafruit.com/product/1475

3.5mm Cables

Old phone (T65)

https://www.marktplaats.nl/v/telecommunicatie/vaste-telefoons-niet-draadloos/m2158407457-ptt-t65-goed-werkende-nostalgische-telefoon

Raspberry Pi

TRS 3.5 Jack x2

Wire n stuff

old headphones with a mic (apple earpod style)

Things we done

We took the phone apart and got the speaker to work by connecting the blue and red cables from the phone out to the audio jack to the soundcard to the computer. played show me the body, was good.

[11 (Neg), 12(Pos) speaker output]

Then we tried the microphone but its a carbon mic and it didnt work. so we atttached a battery and hoped. didnt work.

We took apart wired headphones that had mic in them to see if we could use the mic from it rather than the carbon mic in the telephone.

D7deb106-88f9-45eb-a34c-7463b6dd9089.jpg

didnt work, headphone calble is trrs not trs:

spent a day trying to wire up trrs to an audio cable, turns out the audio jack was the wrong kind.

then wired it directly to a trs jack, worked!!!!!!!!

then cable managed, looks beautiful now. now we have working speakers and working mic.

This is how you could make it work too:

From the headphones you need to...

Connect th Blue (Ground) to the Sleeve of the TRS jack

Connect the Red (mic) to Pin (Ring) 1 or 2 of the TRS

MAKE SURE THE HEADPHONES CONNECTION IS CLOSED!

The wiring used



next steps:

work out how to read the keypad input on the raspberrypi.

References

Microphone from handset

https://www.youtube.com/watch?v=rIkIkbOw3OQ&t

Rotary Pi

Lofi Mic

https://www.youtube.com/watch?v=7gorBkdk8zY

Schematic (v scary)

https://easyeda.com/editor#id=7d0350ec43844219912695cec1a0e156

Rotary MP3 Player

https://www.whizzbizz.com/en/gpo746-t65-rotary-dial-phone-mp3-wav-player

Info on the T65

https://www.cryptomuseum.com/phone/t65/index.htm



Weird Stuff

how does a carbon mic work

https://wonderfoon.jimdosite.com/

https://www.youtube.com/@ruudshangout/search?query=t65