Firmware Development for nrf52840 Dongle

The purpose of this project is to develop a firmware for nrf52840 DK and nrf52840 dongle, able to perform the following tasks:

• Connect nrf52840 dongle with mpu9250 (accelerometer)

• Nrf52840 dongle has to be in the sleep mode at the beginning of the cycle;

• Nrf52840 dongle has to be waked up by an external action

• Nrf52840 dongle must read vibration data from 3 axis for 500ms

• Nrf52840 dongle has to calculate the vibration RMS for each axis (the code to calculate RMS will be provided by us)

• Nrf52840 dongle has to send this data to other nrf52840 DK

• Nrf52840 must send this data via UART to computer

• After sending data, nrf52840 dongle must sleep again

All the process it is explained in the attached image:

Skills: Electronics, Microcontroller, Arduino, C Programming, Embedded Software

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About the Employer:
( 4 reviews ) Araras, Brazil

Project ID: #20783621

Awarded to:


Thanks sharing your project.\\r\\nI\\\'m fully read the description, so that, I\\\'m very interested to this project.\\r\\n\\r\\nAs I\\\'m a Senior Embedded System Engineer, so I have rich experiences in embedded dev More

$150 USD in 60 days
(43 Reviews)

17 freelancers are bidding on average $223 for this job


Hi, I hope you are doing well. I have expertise in embedded system design and development. I have worked with NRF52832/NRF52840 bluetooth modes. I have understood your project requirements and I can execute it in les More

$300 USD in 7 days
(95 Reviews)

Hi, I have rich experiences with micro controller firmware development for 7 years. I am familiar with nrf52840/52832/51822, so I have several NRF modules. I have no NRF52840 dongle, but I will order the module and I b More

$300 USD in 5 days
(3 Reviews)

Dear client, Nice to meet you. Thank you for your job posting. I have been working as a firmware and hardware designer for 6+ years. I had developed several similar projects using the various microcontrollers such as S More

$101 USD in 7 days
(12 Reviews)

Hello I have got your job posting “Firmware Development for nrf52840 Dongle” and I am very much interested to work in your project. I am a circuit designer and have more than 5 years experience of working with the More

$300 USD in 7 days
(42 Reviews)

Hi My name is Vusi and I'm an Electronic Engineer with over 4 years experience developing embedded applications, you can learn more about me from my Freelancer profile or my website at [login to view URL]

$250 USD in 3 days
(29 Reviews)

Dear Sir, We are a small R & D company, based in Bulgaria, Europe. We specialize in developing Embed systems based ST(STM32), Microchip (Atmel )(PICs,AVR,Atmel ARM) and TI (MSP430) MCPUs and peripheries. For our mobile More

$290 USD in 10 days
(11 Reviews)

Hi, I have more than 8 years of experience in embedded design and development. I have expertise in IoT product development based on WiFi,BLE,GSM,GPS,ZigBee etc. I have great experience in firmware development on variou More

$200 USD in 7 days
(10 Reviews)

Hello, This project is quite easy for me, but I got couple of questions to clear before we proceed [login to view URL] message me to have a quick chat.

$300 USD in 3 days
(6 Reviews)

Hello, Deep is here from India. I have experience of developing firmware for NRF52840 SoC. I can help you to develop 2 startup codes as mentioned in the discription. I have already done similar work.

$130 USD in 8 days
(20 Reviews)

Noted! We are an innovative team of PCB designing & Firmware experts driven by solutions and results. We have rich experience in Nordic Microcontrollers. We just came across with your requirements very carefully. Kind More

$300 USD in 30 days
(3 Reviews)

Hi, I am interested to work with you on this projwct. I have been working with an MNC since last 2 years in firmware division. Let me know if you are interested. Thanks. Chirag

$166 USD in 4 days
(6 Reviews)

Dear Sir, I am an experienced embedded system developer. I can provide, full functional firmware for your project. Best Wishes

$250 USD in 7 days
(6 Reviews)

Hi,dear. I have just read your project and I felt happy to see it. I have experienced for +7 years in this field. Particularly, I have ever done the job like this as you want. I want to hear your advice and discuss in More

$200 USD in 5 days
(2 Reviews)

Hi, Thanks for posting this job. I have rich experience on nRF52 BLE firmware & hardware. I am very interested in your project. I can fully realize your project. Please review my profile and invite me. Thanks Regards.

$100 USD in 3 days
(0 Reviews)

Hello, Hope You are doing great. Let's get You some brief details about us. We are innovative product design and development company, specializing in designing products for industrial and mechanical industries. We wi More

$250 USD in 37 days
(0 Reviews)

Hello, I have 3+ years of experience in embedded domain. I have done many projects using Raspberry Pi, Arduino, ESP8266, ARM, AVR, Linux, GSM, GPRS, ZigBee, Bluetooth, RFID, WiFi. The scripting language I know are C, More

$200 USD in 7 days
(1 Review)