Electronic Circuit for Emitting Ultrasonic Sounds
$750-1500 USD
Kiszállításkor fizetve
Need to develop a simple circuit which can store a 10 Digit Number like "98-11-28-79-81" in a permanent memory (ROM or FLASH)
On pressing of a button, the 10 Digit number read from the memory and is converted to Binary and Frequency Shift Keying (FSK) is applied to generate an audio message. The base frequency being used for the FSK - is around 22 KHZ.
This audio is played out aloud through a Ultrasonic Transmitter.
The audio will have a preamble for synchronization.
We want a small LED Light to be part of the circuit. The LED should light up when the message is being played.
If LED does not light up, even after pressing the button - it will automatically mean that perhaps the battery has worn out and needs to be replaced.
[Not part of this project]
What we want to do is to capture this Ultrasound through an app running on Andriod Phone. The app will be able to decode the audio message and extract the 10 digit number from it. This is being developed separately.
Note 1: If it makes the life any simpler, the 10 digit number stored in the permanent memory - could be stored in BINARY, there by avoiding the need to covert to binary.
Note 2: We would want to have the cost of the circuit to be as low as possible.
Projektazonosító: #5519568
A projektről
15 szabadúszó tett átlagosan 1009$ összegű árajánlatot erre a munkára
Dear Hiring Manager, I am a professional electrical engineer and have made more than 150 projects for local and international clients. I have also completed 40 reviews with excellent rating here in freelancer.com. Y Továbbiak
1. Do you require any user interface to store your digits in ROM portably, if yes I can provide it too without getting the project cost very high, I can do this by interfacing a smaller lcd or alphanumeric display or e Továbbiak
I can help u finish the project. but the price can't be too lower. so if you agree with me, choose me.
I have designed different project like RFID reader, Orientation sensing for robotics and a lot of other projects. I think you will be used this in underwater modem like, so I can do this job for you.
I have experience of car security system for last 3 years, i have worked on fsk and can suggest many asics for this application to build this in lower cost. Once we start disucssing i can create BOM and send you th Továbbiak
I am a software / hardware developer that does work with computer graphics, security using the raspberry pi. I also do a lot of interfacing with the PC and raspberry pi. My main question is would the 10 digit numbe Továbbiak
I am electronics engineer & into the field of electrical and electronics since 8 years. I had almost more than 50 projects like this. Interested in doing the project.
