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Firmware development - PCB UNIT


We has recently developed a new electronic PCB control interface based on existing PCB product but adding some new features. The purpose of this document is to define the requirements for a new firmware development.


PCB is an embedded hardware design based on PIC24 microcontroller.

This are the main elements involved in this firmware upgrade:

• PIC24FJ128GA308 microcontroller

• S25FL064L 64Mbit SPI Flash memory

• Two RS-485 serial communication channels MODBUS-RTU


New features to be added:

• Bootloader that allows FW of PCB to be upgraded from a TFT Control Unit by RS-485 communication.

• Communication drivers for fast and efficient interface communication (up to 115200 bauds).


We will supply hardware units of PCB and all necessary tools for developing the new firmware.

4.1) Modify bootloader fw of TFT Control Unit to allow to upgrade remotely till 32 PCB units. Also is necessary to add an option to “clean” SPI configuration and left default values (no PCB units detected).

4.2) Bootloader that allows FW of PCB to be upgraded from a TFT Control Unit by RS-485 communication. TFT Control unit should read the new firmware files in USB pendrive: is very important the correct identification of remote units and it’s corresponding binary file. 32 units can be connected to the Modbus network.

4.3) Modify Communication drivers of PCB units for fast and efficient interface communication.

Kĩ năng: Firmware, Điện tử, Lập trình C, Phần mềm cài sẵn

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Về Bên Thuê:
( 12 nhận xét ) Castellar del Vallès, Spain

ID dự án: #21324633

Được trao cho:


Thank you Santi for posting the project we discussed. I am going to bid for the amount we agreed. Also I am changing the order of the milestones, so we fix the communication issues first, as we agreed

€3750 EUR trong 45 ngày
(19 Đánh Giá)

36 freelancer đang chào giá trung bình €3773 cho công việc này


Hi, I'm an electrical engineer with 8 years of experience in firmware programming. My firmware experience involves various MCU such as Atemga, STM, Nordic BLE chips, ESP32, RPi, PSOC, .. My former products are mainly w Thêm

€4000 EUR trong 29 ngày
(20 Nhận xét)

Hello! We have vast experience in programming various microcontrollers, including PIC microcontrollers. We made various systems: control systems (for controlling equipment at gas production), measurement systems (for t Thêm

€3000 EUR trong 30 ngày
(17 Nhận xét)

Dear Sir. How do you do? I have seen your description very carefully and posting to you my idea. you can see my many work history from my profile. If you give me a chance to interview, I'll explain in more detail and Thêm

€4000 EUR trong 7 ngày
(33 Nhận xét)

Dear Your post stood out to me because it is extremely similar to the work I’ve provided for many of my other clients. I am a senior iOS/Android developer with 7+ years experience. I have good hands on Swift/Kotlin/ Thêm

€4000 EUR trong 7 ngày
(86 Nhận xét)

Hi Sir, WE have read all your points, we are best fit for this job as we are professional PCB designers, embedded firmware designers and IOT specialists. Lets talk to us on your project. We are professional engineers Thêm

€4300 EUR trong 26 ngày
(34 Nhận xét)

hello i have reviewed your project description , and i can help you to achieve the requested tasks. i have a long experience in embeeded systems and microchip controllers. we can discuss more details in private chat Thêm

€3596 EUR trong 30 ngày
(49 Nhận xét)

Experienced with pic mcu and have done lots of similar projects. Please contact me if interested. Hash

€3888 EUR trong 20 ngày
(9 Nhận xét)

⭐⭐⭐Dear client⭐⭐⭐ Nice to meet you. Low cost, high quality. already we have rich experiences with PIC series. I am very very familiar with your job posting. we're an expert team with MCU such as RK, stm, PIC. I can sta Thêm

€3333 EUR trong 7 ngày
(10 Nhận xét)

Hi. I am very interested in your project. i have rich experience on PCB design and firmware programming. I think this project is very suitable for me and i am sure i can give you good result . If you award me for your Thêm

€3000 EUR trong 7 ngày
(7 Nhận xét)

Hello, Sir. I read carefully about your project. The firmware upgrading by itself from the TFT sd card is possible for me. I can make the bootloader of firmware upgrading .Also fast communication of the RS-485 seria Thêm

€3500 EUR trong 7 ngày
(5 Nhận xét)

Hi,dear client. Thanks for taking your valuable time for reviewing my proposal. I am very interested in your project - 'Firmware development - CLEVER PCB'. Because I have been familiar with similar projects. Perhaps yo Thêm

€4444 EUR trong 23 ngày
(1 Nhận xét)

Hi, I am embedded system engineer and have working experience with PIC family, RS485 protocol and bootloaders. I have some queries related to your project if you consider to hire me please ping me back so that we can Thêm

€4000 EUR trong 50 ngày
(4 Nhận xét)

Hi I have done pic24f based queue management system and RS 485 We can discuss Below is my linkedin profile [login to view URL] Regards Senthil Relevant Skills a Thêm

€3000 EUR trong 60 ngày
(7 Nhận xét)

Hola I am interested in your project. I am an embedded system engineer with hands-on experience with PCB Design and embedded software. I also have experince with Microchip MCUs like PIC series and bootloader. I can Thêm

€3000 EUR trong 14 ngày
(6 Nhận xét)

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€3000 EUR trong 7 ngày
(1 Nhận xét)

Dear Sir. How do you do? I have seen your description very carefully and posting to you my idea. If you give me a chance to interview, I'll explain in more detail and I'll do my best for you. I will work hard and hard Thêm

€4000 EUR trong 34 ngày
(6 Nhận xét)

Dear client. I'm finest. Thank for reading my bid. I have just read your requirement at carefully. I 'm a full stack and full time developer. Especially, I like Java, C, C++ and C# languages because these are my hobby Thêm

€4000 EUR trong 7 ngày
(4 Nhận xét)

Hello. I have rich experience with design, simulation and analysis using Altium Designer, Proteus, and arduinoIDE. i use Altium Designer 2017 version and have all component libraries for altium now. i can make schemati Thêm

€3000 EUR trong 7 ngày
(2 Nhận xét)

Hi. I’m developing electrical devices , embedded software and service programming. I have designed several devices and have a lot of experience with PIC,AVR microcontroller, ARM processors, Raspberry Pi, and Arduino du Thêm

€4000 EUR trong 7 ngày
(5 Nhận xét)

Hi, I read your project description. Your project is really interesting to me and i have many experience working with PCB design, manufacturing functional prototyping with firmware programming, adroid app, and test. I' Thêm

€4000 EUR trong 25 ngày
(1 Nhận xét)