Simple / cheap acoustic modem

All things pertaining to wireless and RF links

Moderator: phalanx

Post Reply
itolond
Posts: 8
Joined: Sun Jan 08, 2017 8:11 pm

Simple / cheap acoustic modem

Post by itolond » Mon Apr 30, 2018 3:03 am

Hi Forum,
any1 have any leads on a cheap simple acoustic modem (or working project examples) ? (for Ardiuno)

jremington
Support Volunteer
Posts: 2220
Joined: Fri Jun 15, 2007 9:41 pm
Location: Eugene, Or

Re: Simple / cheap acoustic modem

Post by jremington » Mon Apr 30, 2018 10:47 am

Please add details describing the acoustic modem, and what you want it to do.

itolond
Posts: 8
Joined: Sun Jan 08, 2017 8:11 pm

Re: Simple / cheap acoustic modem

Post by itolond » Mon Apr 30, 2018 11:57 am

Ok,
It’s to control via 2 way coms to an app for a model submarine
Depth max 5m
Water varies, but worse case salt and Low visibility
Distance max 300 m

jremington
Support Volunteer
Posts: 2220
Joined: Fri Jun 15, 2007 9:41 pm
Location: Eugene, Or

Re: Simple / cheap acoustic modem

Post by jremington » Mon Apr 30, 2018 1:07 pm

Sadly, underwater transducers are expensive and for 300 meters range, generally require high voltage electronics for the transmitter.

You could experiment with a simple piezo disk as a transducer, but they are not efficient at transmitting sound energy into water.

Post Reply