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Create device similar to shopkick

I want a device similar to what ShopKick That produces a high pitch sound that can not be heard by humans.

Specifications:

-Sound must be coded with a unique sound code that will be picked by smartphones, each device must have a unique sound code.

-The device must cover large spaces with obstacles and noise.

-The device must produce high pitch sound with more than 21khz that cant be heard by humans

-I will need the demo device to be shipped to my country.

-I will also need the documentation to reassemble this device and circuit design.

-220v plugin input.

- The most important thing to keep in mind is that the device components and assembling cost must be as low as possible(for later production).

Færdigheder: Elektrisk Ingeniørarbejde, Elektronik, Fabrikations Design, Mekanisk Ingeniørarbejde, Produkt Design

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Om arbejdsgiveren:
( 1 bedømmelse ) Cairo, Egypt

Projekt-ID: #4074277

4 freelancere byder i gennemsnit $570 for dette job

MikroStar

hi, i can help.

$1500 USD in 42 dage
(41 bedømmelser)
6.1
SanducAndrei

Hi, do you need a professional help?

$200 USD in 3 dage
(11 bedømmelser)
3.3
sergeydm

Hello. I have 10+ years experience in hardware design.

$400 USD in 30 dage
(1 bedømmelse)
2.6
Thesmarttechies

We have more than 5 years of experience in this field ... please check your PM

$180 USD in 3 dage
(1 bedømmelse)
1.0