Bluetooth LE Prototype Device

$750-1500 USD

Completed

Posted

almost 9 years ago

$750-1500 USD

Paid on delivery

We are seeking an embedded design engineer to create a microcontroller-based Bluetooth wearable device. Applicants will be asked to design and prototype a version 1.0 of the device, estimated budget for this phase is $1000. We will likely hire multiple candidates for this phase to find the best developer. The chosen developer will be asked to complete the rest of the project. If this does not make sense, let me know. The basic requirements for version 1.0 are as follows: · The device shall use Bluetooth Low Energy (4.0+) protocols. · The device shall connect/pair with Bluetooth LE-supported devices, such as smartphones. · The device shall be watch-size. · The device shall vibrate upon command from the connected smartphone. · The device shall have a lithium-polymer battery charging circuit. · The device shall send battery level information to the connected smartphone. More detailed requirements will be provided to the chosen candidate(s). The Ideal Candidate: · Expertise with Bluetooth 4.0+ (Low Energy) radios and protocols · Experience designing, prototyping, and testing small, low-power, embedded microcontroller systems · Strong communication skills, proficient in English, comfortable speaking on Skype · Experience with embedded development tools Important: To separate you from spammers, please write “Blue Sky” as the first line of your bid. We will delete all bids that do not start with this phrase.

Bluetooth Low Energy (BLE)

Circuit Design

Embedded Software

PCB Layout

Project ID: 7945961

About the project

23 proposals

Remote project

Active 9 yrs ago

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Awarded to:

@dsnejko

Blue Sky Hi I have pretty much everything done you are asking. I did three different projects with BLE last year. One of the designs was based on CC2541 and was as small as 16mm in diameter (radio only), another one had a charger and a vib motor, radio and sensors. I did schematics, layout, prototyping, firmware and so on. If you are interested contact me on my account here (or [login to view URL] ad gmail com) and we can talk details. A can provide proving pictures. Regards, DSnejko P.S. All this work was protected with NDAs so I would need more info to talk to my customers.

$1,155 USD in 30 days

4.9

(5 reviews)

5.7

23 freelancers are bidding on average $1,146 USD for this job

@sagradoamicus

Blue Sky hi sir i am an expert electrical engineer i can do it for you i have almost 4 years of experience in this field. i assure you quality work and on time delivery please reply to discuss it further regards

$1,000 USD in 30 days

4.9

(184 reviews)

7.8

@mechatronicsengr

Blue Sky Hi, I hope you are doing well. I am already working in similar capacity. I can meet the specification you have mentioned. Lets Discuss. Looking Forward, Khawaja

$1,250 USD in 20 days

4.7

(54 reviews)

6.6

@EEmbedded

Blue sky Dear Sir, We have previous experience with BLE development and android application development. Please see our profile for more details of previous projects. We will provide 1. firmware of the BLE device 2. Schematic and PCB design 3. prototype development 4. videos of working prototype 5. Simple Android app and source codes. please let us know details of the device functions. we will provide videos of previous projects on your request. Best regards Lasantha Prasad

$1,100 USD in 15 days

4.7

(22 reviews)

6.6

@loi09dt1

A proposal has not yet been provided

$1,184 USD in 20 days

5.0

(69 reviews)

6.2

@tkousar

Blue Sky Hi, I am an Electrical Engineer practicing for last 8 years in an R&D Organization. I have designed a number of products ranging from RF & Microwave circuits to digital circuits. i have experience in designing filters, couplers, LNAs, Amplifiers, antennas, sweep generators, function generators, VCOs, NCO and many more in the frequency range of DC to 2 GHz. i use ADS, HFSS, OrCAD, Eagle PCB and Altium for the design and development of the above mentioned products. I have designed circuits for Filters, Couplers, LNA, Amplifiers, Antennas, Bluetooth, WiFi, GSM, GPS, Sweep Generators, Function Generators, VCOs, NCOs, DDS, 555 timers, AM Modulators, Microcontrollers, EEPROM, Flash, Accelerometers, USB, RTC, Strain Guages, Opto-couplers etc. Talking about wrist watch circuits, i have designed pet trackers, GPS trackers, stress/strain guages, temp sensors, humidity sensors sharing data over bluetooth, WiFi, GSM, GPRS protocols for data to be displayed over smart phones. These devices had on board coin cell batteries and antennas. I am looking forward to discuss in detail. Regards

$1,500 USD in 45 days

4.8

(16 reviews)

5.6

@adipdutt

We cannot make a multilayer PCB on this budget also some of the component must have ultra small footprint, the assembly of which is impractical for one of a kind. The best size is 3cmx3cm using nRF8001 and a uC +vibrator USB batt-charger. Demo will be on Skype. The material can be sent on prepaid coupon to the courier by the customer

$1,250 USD in 30 days

5.0

(6 reviews)

4.1

@chamikaIGamage

Blue Sky Hi I'm Chamika and Expert with electronic system design , have done several designs for manufacturing including Biomedical , Consumer , Avionics .... you can visit my portfolio for more details Thank you Chamika Gamage Electronic Engineer

$1,250 USD in 20 days

5.0

(2 reviews)

3.9

@dc786ribadiya

Blue Sky I have good experience with nordic BLE 4.0. I have work with peripheral as well as central role of BLE Device.

$750 USD in 30 days

5.0

(3 reviews)

3.2

@linuxdeveloper

Blue Sky I am interested in your project posting. I have experience that fits your requirements. I have worked on bluetooth devices in the past and currently designing a Bluetooth v4.0 wearable device for a client in Florida, USA. The work involved in the current bluetooth device involves Schematic capture, layout, prototype assembly and micro-controller firmware development. There are specs that apply directly to what you need. i.e. Lithium-polymer battery charging, micro-controller based(Microchip), BLE and Smartphone interaction. Regarding Tools I have a workbench on my site, with 4 channel digital oscilloscope, DMM, Bench power supply, professional grade soldering station, component kits (SMT,TH), Micro-controller programmer, JTAG programmer and other tools needed to assemble and test prototypes. As far as communications skills, I speak fluent english. I did my Bachelors and Masters degree in Electrical Engineering at the University of Central Florida in Orlando, FL. I lived and worked there for 10 years. Now living in Buenos Aires, which has only 1 hour time difference with EST. I would like to learn more about the project, we can arrange a skype conference when needed. Regards, José

$1,111 USD in 20 days

5.0

(1 review)

2.7

@pavi832

Blue Sky Hello, i am having more than 8 years of work experience in developing the apps for various mobile platforms. working on Bluetooth related apps for android, iOs and peripheral side using nordic and broadcom and TI boards for more than 6 years. good understanding on Bluetooth Low energy specifications. please message me to discuss further i am looking forward to hear from you Thanks

$1,250 USD in 25 days

3.5

(2 reviews)

3.0

@Mivr

Blue Sky Hello, I see that you are from USA, and I know what's the price for a prototype board there. I am located in Bulgaria, here a prototype 2 layer PCB with size 110mm x 120mm is 20$, 30$ if you need it in the next 3 days. Considering this, I am in a good position to make rapid prototyping with very low expenses. Regarding my experience, it covers embedded development from Arduino through my custom boards, that can be seen in my portfolio up to high speed wireless hubs. Regarding BLE, I am aware of the standard protocols, and I have no problem using them. Regarding tests and proof of design: I can provide video of every stage of the development from breadboard prototype to finished board. Of course with proper documentation. Regarding parts choise: I would go with Atmel microcontrollers, simply because they are easy to use and fast to debug. If you wish other brands can be used, but time might vary. Regarding equipment for test: I have ready an to be used laboratory power supply, 50MHz oscilloscope, Atmel ICE debugger, Mastech multimeter. If more instruments are required as a student I can access almost any laboratory equipment even for for-profit purposes at very low rates (2-3 USD per hour per laboratory). If you require some more complex analyzes I can outsource them to local laboratories for relatively low prices (100-200 USD depending on tests required) If you have any questions, or you want to check my knowledge, simply contact me through Freelancer. Mihail

$1,000 USD in 20 days

2.4

(2 reviews)

2.7

@mnorain

Blue Sky I recently built a rechargeable device that communicate via Bluetooth with my Samsung Galaxy phone. So 60% of your project design is already ready with me. For your project: 1- I will use a separate low power Bluetooth module that will communicate serially with the microcontroller. 2- I will user a 32 bit microcontroller namely PIC32MX250F128D for the following reasons: a. This microcontroller contains a USB port, so I will add a USB based boot loader to allow you to upgrade the firmware of the device whenever you need by directly connecting the device to the PC USB. b. This microcontroller will be held in a sleep mode which will significantly improve the battery consumption. and it will be awaken by the Bluetooth module whenever is needed. c. The cost vs capabilities of the microcontroller will amaze you. typically 3.5 dollar /unit for +100. d. The size of this microcontroller is compatible with your requirements. - The cost effective MCP73831 IC will be used as a battery charger. - The device will be charged directly from the computer USB by using a regular mini USB cable. - depends on the battery selection a regulator or a boost-buck IC will be used to regulate the power from the battery so as to utilize as much as safely possible of the battery charge without compromising the battery life.

$1,444 USD in 20 days

0.0

(0 reviews)

0.0

@adityathakekar

Blue Sky Dear Team, Greetings!!! This is Aditya Thakekar Electronics Engineer,passionate to work on Electronics Projects, have successfully worked with on IoT based Home automation and Wearable Electronics, wish to know more about your project and apply for the same. Kindly inform. Eagerly awaiting your reply. Best regards, Aditya

$1,200 USD in 20 days

0.0

(0 reviews)

0.0

@dhavalnpatel

Hi, This is Dhaval, Firmware Programmer. Have hands on with CC2541 Bluetooth Module. Feel free to contact. Dhaval

$1,250 USD in 20 days

0.0

(0 reviews)

0.0

@bittersweet00

“Blue Sky” I'm experienced in embedded programming. I used boars like MSP430, UDOO, ARDUINO, PIC, RaspberrPi. I made projects about USB, RS-232, UART, SPI, I2C. I worked in projects like fingerprint scanner, smart parking system, remote camera control, ftp server, using REST api. I used GSM, Wifi, 3G, google api, canon api, camera, servo modules etc. I can start immediately. With regards, Murat Torun

$1,250 USD in 20 days

0.0

(0 reviews)

0.0

@ipv1

Blue Sky Small System with BTLE that can connect to the cellphone and send battery data will be designed. It will have separate module for the BTLE, microcontroller and BLTE Radio. LiPo charge and discharge circuit will be part of the microcontroller module itself. A small dc motor will be used as the haptic feedback device as required. For the software a web app that can run on Android and Mac OS and iOS will display the battery status and will have a button for the vibrate command. If you can provide more information on the exact application, the system can be designed for scalability. E.g. If you plan to add more complicated sensors like EKG etc in the future and move from Bluetooth LE to Wifi or maybe subGHz Modules, then the choice of hardware platform will vary. From 8Bit AVRs to 32Bit ARMs to Intel Edison, the possibilities are endless. I request the project manager to draft an appropriate SRS with possible expansion plans for the design. Thank.

$1,444 USD in 25 days

0.0

(0 reviews)

0.0

@yzcmf123

My major is EE now studying in this field,and I think I can try something about this project,thank you

$750 USD in 20 days

0.0

(0 reviews)

0.0

@hardwaredesignv

I have experience in designing the wireless modules.I can use a NORDIC or a CYPRESS BLE modules for developing this. I have experience in hardware design (Circuit Design), PCB design (2-18 layers), and power electronics. I will take care entire product life cycle. Qualifications: BE - Electronics & Communication, MS- Embedded Systems Skills: Circuit Design, Prototyping, PCB Design, Micro-controller based Embedded Design, PCBA Manufacturing, Power supply Design Reverse Engineering From your old obsolete PCB where all the original design data may have been lost, I can generate the following:- New schematic diagram New PCB Design and fabrication BOM Preparation MICROCONTROLLER PROGRAMMING New items list containing all RoHS compliant components Eliminate any component that have become obsolete or are not compliant. Data sheets for all new components Test & Manufacture - Strong links with local companies to provide a full procurement, manufacture and test service. Thanks,

$900 USD in 25 days