In Progress

BLE nordic card

BLE Card Project

Moto: Need to check location of the card in zones with 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 following parameters

macid,uuid,temp,rssi,key_state, datetime

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


Read datetime from phone/uart and update rtc

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 above data is got at receiving end

Skills: Firmware, Microcontroller, PCB Layout

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About the Employer:
( 46 reviews ) New Delhi, India

Project ID: #19276951

Awarded to:


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 More

$750 USD in 30 days
(21 Reviews)

9 freelancers are bidding on average $1074 for this job


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 More

$1250 USD in 20 days
(28 Reviews)

Hello, I am Anthony from Sri lanka. I have 7 years of experience in the filed and I am very much interested in your project. Why you should hire me ? * As a full time freelancer I have my own PCB fabr More

$833 USD in 20 days
(41 Reviews)

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 More

$1250 USD in 20 days
(3 Reviews)

Noted! I just came across with your requirements. We do work in nordic nRF52. We can help you in this project as we are a professional team in Embedded hardware & software development that work in C programming, PCB More

$1333 USD in 30 days
(3 Reviews)

Hello, I am an electromechanical and electronic technician, and I only have the thesis to be an electronic engineer. I work in an electrical testing laboratory, under international standards, im work here for more t More

$1000 USD in 1 day
(1 Review)

Dear,sir. How are you? I read your project with great interest. We will make every effort to understand your intentions and satisfy you. I will not let you down with a blank and misshapen. I will wait More

$750 USD in 10 days
(1 Review)

Please view my portfolio form similar PCB design Work 1. Digital Pen (BLE based product) 2. Battery Management System 3. Energy Metering Board 4. Arduino RS485 Modbus Baord

$1250 USD in 20 days
(0 Reviews)

i am interested to do your project. i can satisfy your requirement. it would be my pleasure to serve you.

$1250 USD in 20 days
(0 Reviews)