PCB Design - 30/04/2019 18:08 EDT

Design of PCB for load cell measurements as a breakout board for external ESP32 TTGO Lora V2.0 ([login to view URL]). The load cells will be measured using TI ADS1232 ([login to view URL]).

PCB must include:

- SX1509 i2c digital port expander

- ADS1115 i2c analog port expander

- DS3231 RTC clock + coin battery

- Voltage Regulator Input 12V to 15V to 5V and 3.3V

I'm attaching sketch schematic with my first idea based on similar projects and extra requirements. I'm not electrical engineer, so I'm looking for improvements idea and suggestion from the awarded freelancer.

PCB should be designed in 4 layers separating load cell analog circuits and power supply circuits from others routes required.

Once the designs is completed files will be sent to PCB manufacturers in China for design approval.

The awarded freelancer must deliver the following files:

- PDF schematic and board

- original eagle or altium files

- 3d model (step or parasolid files) from electronic design software (not accepted sketchup mockup)

- Gerber files including component placement (must comply with typical manufacturer requirements)

- Full BOM list. (must comply with typical manufacturer requirements, pcbway sample attached)

Payment milestones:

- 40% once schematics is approved

- 60% once routed board is approved

- 75% once Gerber, BOM and 3D are approved

- 100% once manufacturer approve design and start manufacturing

Aptitudini: Design circuit , Inginerie electrică, Electronică, Microcontroller, PCB Layout

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Despre angajator:
( 5 recenzii ) Stgo, Chile

ID Proiect: #19402289

Acordat lui:


Hello there; I have read your project description and I can do that for you. I usually work in KiCad which is open source and have good 3D support, but Im also familiar with Eagle which can export DXF model of the boar Mai multe

%selectedBids___i_sum_sub_7%%project_currencyDetails_sign_sub_8% USD în 30 zile
(46 Recenzii)

50 freelanceri licitează în medie 1163$ pentru acest proiect


HI I am experienced PCB designer with more than 9 years of experience. I can do it for you . I have read the specs and I am interested in working on it Please review my profile to see the feedback from my previous e Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(249 recenzii)

Dear Sir I am very interest in your job as an experienced engineer. For 10+ years, I have been working in this field and you can see my experience in my profile. I checked your project files and I understood everyth Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(40 recenzii)

Hello, How are you? I am an electrical engineer and expert in circuit designe and PCB layout. I have fully checked atteched files. I have been using Altium, Eagle, Protel, KiCAD, Allegro for PCB design. Altium Designe Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(24 recenzii)

Thanks for sharing your project. As I'm a Senior Embedded System engineer, I have rich experiences in many embedded systems development and home automation programming over 8+ years. Especially, I had designed Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 12 zile
(34 recenzii)

Hello sir, I have experience in designing electronics circuits and can make your project. i will make your project completely on my side and will deliver a working prototype. I can also develop hardware compatible and Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 30 zile
(37 recenzii)

Hi There, We at I-TECH will do the prototyping and will deliver design of fully working and tested circuit. We have in house facility for PCB printing. Please feel free to contact us. Best Regards, Shahbaz.

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 40 zile
(52 recenzii)

Hi, I have a lot of experience in developing electronics for load cells. In various cases, the main requirements for the development were low cost, reliability, measurement accuracy, resistance to external interference Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 30 zile
(20 recenzii)


%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 10 zile
(37 recenzii)

Hi there i am an electrical engineer with 8+ years of experience related to PCB development and manufacturing. I have made many breakout boards for different controllers. I can do this project for you. Let me know if y Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(34 recenzii)

Hi Sir, We design professional PCB Boards and we also help to manufacture them. we do our jobs in latest Altium designer software. We have read your project sir, and we are agreed to all the points in it and all Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 12 zile
(43 recenzii)

I have over 35 years experience as an electronic design engineer, please see my profile for more details The current price and timescales are only place holders to allow me to communicate with you I would prefer to Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 30 zile
(26 recenzii)

Hi, I am a professional PCB designer. I have professional experience with PCB layout design and you will see about this from my profile/portfolio. I think that my professional knowledge and experience will provide y Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 5 zile
(27 recenzii)

Hello, as a PCB designer with more than 7 years of experiences, I read your project description carefully and I am very confident with your project because I am much experiences in PCB design for LoRa module, IoT board Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(15 recenzii)

Dear sir, We have reviewed your input above. And we can make sure we will complete this design within 8 days. If you need some of REF designs, please contact me. We will help you create schematic, BOM material, Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 8 zile
(18 recenzii)

Hello. I have experiences for electrical and PCB design. Alse I am a programmer for MCU. I interest your job. Regards.

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(33 recenzii)

Hi, We can design 4 layered PCB for load cell measurements. We are a professional team in Embedded Hardware & software development. Please come for the interview. Here is the process:- Research and Component or Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 30 zile
(4 recenzii)

Hello, My name is Andrei, i am a Romanian IOT Developer with a lot of experience in IOT projects and automatics . I have developed i a lot of Development boards in the past , i like your idea. I develop cl Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(21 recenzii)

Hello! I am very interested in your post project. i have rich experience on it. I think this project is very suitable for me and i am sure i can give you good result . I can help you if you'd like looking forwar Mai multe

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 20 zile
(3 recenzii)

Altium Designer .

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 30 zile
(2 recenzii)

hi sir i can complete this task. please check my profile. i am expert pcb designer in eagle. come to chat to discuss more waiting for a reply from your side. i will provide all tasks as per milestones you referred.

%bids___i_sum_sub_35%%project_currencyDetails_sign_sub_36% USD în 6 zile
(8 recenzii)