DTMF Decoder and Phone Audio Matrix Switching
Playing with a revised DTMF decoder MT88L70 3.3v power/GPIO, and audio matrix switching.
PCBWay Supports High Precision Advanced PCBs: https://www.pcbway.com/
PCBs at PCBWay https://www.pcbway.com/project/sharep...
Design files https://github.com/GadgetReboot/DTMF_...
Using a 3.3v powered DTMF decoder makes it easier to interface directly with ESP32 compared to the 5V version, which requires level shifting.
The ongoing phone line experiments may expand between just two node direct interfacing.
An MT8808 8x8 analog crosspoint switch is being tested to see if phone line audio can be routed between channels. This may enable a central coordinator to manage call requests and phone line routing between multiple nodes, including multi node party line call connections.
If you'd like to support the channel, you can:
Join a membership on this channel: / @gadgetreboot
Support me on Patreon: / gadgetreboot
Become a channel member (click the Join button): / gadgetreboot
Shop through my affiliate links (I may earn a small commission, costs you nothing)!
Banggood https://www.banggood.com/custlink/3vK...
Aliexpress https://s.click.aliexpress.com/e/_AFeHwB
Amazon.com https://www.amazon.com/?&_encoding=UT...
Amazon.ca https://www.amazon.ca/?&_encoding=UTF...
Videos are mirrored at LBRY/Odysee: https://odysee.com/@GadgetReboot:4
#ElectronicsCreators
Watch video DTMF Decoder and Phone Audio Matrix Switching online without registration, duration hours minute second in high quality. This video was added by user Gadget Reboot 19 March 2024, don't forget to share it with your friends and acquaintances, it has been viewed on our site 77 once and liked it 4 people.