User:Wordfa/oldphonehack: Difference between revisions
| Line 16: | Line 16: | ||
'''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 | 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 | 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. | ||
| Line 29: | Line 35: | ||
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"> | ||
| Line 46: | Line 53: | ||
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]] | |||
| Line 84: | Line 97: | ||
=== 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.
Parts Required
USB interface to 3.5mm
https://www.adafruit.com/product/1475
3.5mm Cables
Old phone (T65)
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.
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!
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
- Really good write up with code:
- https://marks.kitchen/blog/rotary_phone_running_linux/
- Linking Video
- https://www.youtube.com/watch?v=M4eCrctDMEc
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