BLE Card Project

Moto: Need to check the location of the card in zones with a long battery life of 2 years

Design idea:

Nordic nrf52 + key1 + Led (low power) + MCU chip (ultra-low power) + 2 x CR3032


Need to make a broadcaster with the following parameters

macid,uuid,temp,rssi,key_state, datetime

Note: If the key is press long for 3 sec it will change a bit of key_state to 1 else show 0


Read DateTime from phone/uart and update rtc

The set time interval of broadcast (default time interval is 1sec)


Set Sleep time will be set (say if time is set 07:00 14:00 then it should transmit between those interval other hours it should sleep)


Sch files

Gerber files


Firmware development

App to show the above data is got at receiving end

Beceriler: Arduino, Elektrik Mühendisliği, Elektronik, Mikrodenetleyici, PCB Düzen

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İşveren Hakkında:
( 0 değerlendirme ) Stockholm, Sweden

Proje NO: #19277249

Bu iş için 11 freelancer ortalamada $654 teklif veriyor


Hi, I hope you are doing well. I have extensive experience in BLE based embedded projects using NRF51 and NRF52 module. I have understood your requirements and I can execute it in less possible time. Looking F Daha Fazla

$1000 USD in 15 gün içinde
(80 Değerlendirme)

Hello sir, I have experience in designing electronics circuits and can develop hardware compatible smartphone and PC based apps. I also have done a lot of IoT projects and can transform your idea into a fully working Daha Fazla

$1250 USD in 30 gün içinde
(37 Değerlendirme)

Thanks sharing your project. As I'm a Senior Embedded System Engineer, so I have rich experiences in embedded device development using BLE/Bluetooth, Wifi, USB, RFID over 8+ years. Especially, I had developed m Daha Fazla

$700 USD in 3 gün içinde
(20 Değerlendirme)

Hi there i have 5+ years experience with nrf52. I have made many BLE based low power high battery time. I can develop this project for you. Let me know if you are interested.

$1000 USD in 30 gün içinde
(32 Değerlendirme)

Hello! Thanks for posting this job. I would love to have the opportunity to discuss your project with you. I have perfect skill with both bluetooth and wifi. - My Skills & Experiences: Arduino Firmware ESP Daha Fazla

$1250 USD in 3 gün içinde
(11 Değerlendirme)

Hello, We have 15 years of work experience in manufacturing and have worked extensively in china, Apac countries and India. We have a team of Designing and Developing Electronics Projects and have good experience Daha Fazla

$1111 USD in 3 gün içinde
(2 Değerlendirme)

yes buddy, an easy project to handle,,,,u will get the best work accompanied with brotherhood,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

$100 USD in 3 gün içinde
(27 Değerlendirme)

I DO NOT OUTSOURCE I have been a freelancer for the past 8 years, I believe that my experience and skill in this background will prove to be of great help to you. Contact me to discuss more on the details

$150 USD in 3 gün içinde
(4 Değerlendirme)

I have experience in microcontroller with this type of communication by doing a lot of projects base on STM32 core and SIM900A. I also have done project smart home, connect and transmit temperature, humidity for my ho Daha Fazla

$277 USD in 13 gün içinde
(0 Değerlendirme)

Hi, I develop customer-specific products and know-how-related solutions. Am willing to work on this project with you. Before giving any proposal I would to have a clear discussion with you. Don’t pay too much Daha Fazla

$200 USD in 5 gün içinde
(0 Değerlendirme)

Hi, im interested in this project. I have an experience in nordic BLE chips and PCB design. Feel free to contact me via freelancer or [login to view URL]

$155 USD in 10 gün içinde
(0 Değerlendirme)