Design me a Product

$30-250 USD

In Progress

Posted

about 10 years ago

$30-250 USD

Paid on delivery

I need a Bluetooth 4.0 data logger of 5 channels of temperature that can transmit this information to my phone (android/Iphone), i would like to configure from my phone the scan time from 1 second to 1 minute in increments of 1 sec. The temperature sensor should be thermocouple or any other sensor that can read in the range from 15C to 45C with an accuracy of 0.2C A need that this device storage let say 10 readings and the send to the phone(also configurable te qty of readings), or respond to a command from the phone to pull the information. in case the phone is not near, the device should store all the readings and as soon as it pair with the phone it will send all the information and continue measure. I need this device to storage up to 1 day of information in the internal memory I need it that works with 1 coin battery so it should be very efficient im looking for 1 month of battery life. Next phase of this project should be to improve the device to be able to be rechargeable or have at least 3 months of battery life. I need the prototype and the app

Electrical Engineering

Project ID: 5405393

About the project

12 proposals

Remote project

Active 10 yrs ago

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Awarded to:

@iiontchev

Hello, my name is Iliia and I am an experienced embedded systems developer. I have extensive knowledge of microcontrollers and firmware development. I currently work as a full-time software developer and have a bachelor or electronics engineering degree from a university in Canada. I am an ethical and a hard-working person. I would love to help you out with this project. I hope to hear from you soon.

$183 USD in 30 days

0.0

(0 reviews)

0.0

12 freelancers are bidding on average $1,149 USD for this job

@MikroStar

hi, i am an electrical engineer. i have expertise in embedded system design.i can help you with this project.

$4,500 USD in 75 days

4.7

(83 reviews)

7.9

@quang102

A proposal has not yet been provided

$1,500 USD in 30 days

4.7

(35 reviews)

6.5

@designvin

Hello, I have a 16+ years of experience in embedded hardware/software product development. Based on that I wish to bid for this project. Unfortunately this involves design, prototyping, testing and shipping it to you. So I won't be able to do it in your max budjet of $250. Also I can support only Android application, but can support you in developing Iphone app. Please let me know your feedback. Regards Vinod

$555 USD in 45 days

5.0

(9 reviews)

5.8

@euripedesrocha

Hi, I have experience in design this kind of device and I need to ask you few questions: How many units do you plan to build in the final version? How many prototypes do you need? Do you already have an enclosure designed for this device? My suggestion is to select a nordic SOC and integrate a SD card to the datalogger. Feel free to ask any question you may have. Regards Euripedes

$200 USD in 3 days

4.9

(8 reviews)

3.7

@phuongtl3

Hi, I have finished "smart blood pressure monitor" project that uses Bluetooth LE (not 4.0) to send measured data to iphone then send to a web server. There are something need be modified to meet your project requirements but they are not much. I need to clarify that Bluetooth LE can be used on both android and iphone without license; Bluetooth 4.0 need "MFI licensed" for iOS devices. Regards, Peter

$200 USD in 18 days

5.0

(2 reviews)

3.3

@jcmorales82

I'm very familiar with Bluetooth interfaces, and developing applications for Android. I can design your project using a PIC Microcontroller and a LM35 as temperature sensors, they are very accurate. It is an easy project but it needs some time to get it done right. I can have it ready with test and everything in 15 days. Thanks

$500 USD in 15 days