An emitter that sends ultrasonic signal on 22 Khz

$750-1500 USD

クローズ

投稿日:

約12年前

$750-1500 USD

完了時にお支払い

I need an emitter in about 200 pieces. It should be able to send a inaudiable signal on like 21 Khz which cannot be heard be humans - and it should be able to send the signal in "a bit sequence (ID) protocol", so different signal can be recognized. It is should work like the device used in this video - see 1.06 minutes: [login to view URL] -

Android

iPhone

Manufacturing

Mobile App Development

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プロジェクト ID: 1485347

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9個の提案

リモートプロジェクト

アクティブ 12年前

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この仕事に9人のフリーランサーが、平均$1,189 USDで入札しています

@techgurudesk

It would be great to work with you ... Kindly see PMB for further details ... Thanks ...

$999 USD 19日以内

4.7

(23 レビュー)

5.2

@seekdeveloper

Hi, Kindly check PMB

$1,700 USD 30日以内

4.5

(2 レビュー)

4.9

@Phil31

Hi, bid for clarification, please check PMB

$750 USD 2日以内

5.0

(1 レビュー)

4.2

@ENGKAM

Hi, I am a hardware engineer with proven design capabilities from the industrial field. I can design you this modules and I can start immediately. Please see my private message.

$1,500 USD 30日以内

0.0

(0 レビュー)

0.0

@ghalibjanjua

My team can do it for you.

$1,500 USD 30日以内

0.0

(0 レビュー)

0.0

@bachelorlko

See PM for detail.

$1,100 USD 20日以内

0.0

(0 レビュー)

0.0

@henrywilson007

Hello Sir, Please check PMB for listing and confident to complete the project with quality services.. Best Regards

$800 USD 10日以内

0.0

(0 レビュー)

0.0

@phpMaestro

Hi, We are a team of developers and designers who are in this field from more than 10 years. We are a web design and Development Company, providing web development in PHP, CMS based websites, E-commerce website, Wordpress web design template, logo design, banner design, flash... We also provide SEO and hosting services. Please check PMB. Thanks and Regards, Manish %__%

$1,450 USD 30日以内