Hardware design to retrofit GPO style phones allowing playback and recording of high quality audio from a Raspberry Pi for use as an electronic guest book for weddings
- Handset microphone capsule replacement utilising a USB audio interface IC and MEMS microphone fitted into a custom 3D printed enclosure
- Custom 3D printed bracket to hold a high-fidelity replacement speaker
- Replacement PCB to fit into phone base, to securely hold and connect a Raspberry Pi using custom GPIO for the hook switch
- Consideration taken into account for the fact completed Phones will spend a large amount of time in customer facing rolls and shipping
Microphone capsule assembled in phone. Cap pushes design into spring to be held securely.
3D printed microphone capsule
