PCB Design for an Electronic Airflow Sensor Array
$250-750 USD
착불
I am developing an electronic prototype device that will monitor windspeed and direction using an array of air pressure sensors. This prototype will be tested in a wind tunnel. The device will be physically connected by a USB connector to a laptop computer that will display the sensor output and log the sensor readings for later study and analysis.
I have included documentation and links for all the specifications described below.
This project is underway and the work needed here was begun by another Freelance who was unable to compete the project.
Deliverables
First Deliverable: Design 2 small PCBs
The first PCB will hold 3 air flow sensors (I2C) mounted side by side with a 4.7k Ohm pull-up resistor on each sensor's SCL and SDL outputs. The resistors need to be easily hand soldered and the values may need to be changed on occasion so the design will need to accommodate this possibility. The back of the board will have a wire-to-board-connector that will allow the first board to connect to the second board. The connectors should be mounted to minimize the overall profile effect of the wiring. There is an included graphic that shows the height and width alignment of the sensors. The boards should be designed to minimize the height and width dimensions.
The second PCB will hold two Adafruit breakout boards on one side and an Arduino Nano on the other. The USB plug on the Nano should be accessible through a window on the side of the case. Case design is not part of this project. Again, the connectors should be mounted to minimize the overall profile effect of the wiring.
The two boards will be mounted back-to-back in a case such that with spacers and mounting screws they become a single component.
Note: The reason I am asking for this design is that I plan on adding additional electronics in the future. By having the sensors on one board and the electronics on another I can more easily change the electronics without disturbing the sensor board.
Second Deliverable: Modify existing code or create new code that will allow the sensor output to be monitored on an attached computer and the data stream logged in a text file.
The Arduino Nano will be connected to a laptop computer via USB cable. I will need to be able to start and stop data monitoring and logging as needed as well as set the intervals at which the sensor output is delivered to the monitor and log. The log also needs to contain a timestamp.
It is likely that after some usage and testing of the device I might have some software modification requests and would like the programmer to be available for follow-up.
Electronics Schematic
The included schematic was originally designed without using breakout boards. The modifications needed to accommodate the breakout boards are noted on the schematic
Parts List
3 Omron D6F-PH sensors
- D6F-PH0505AD3 (2)
- D6F-PH0025AD1 (1)
- Datasheet: [login to view URL]
- CAD download: [login to view URL](S(0zupvrm10z0fcrwbzy25vm0b))/[login to view URL]
Breakout Boards
- Adafruit 2717: TCA9548A - I2C Multiplexer (1)
- Adafuit 395: TXB0108 - 8-channel Bi-directional Logic Level Converter (1)
Arduino Nano (1)
4.7k Ohm resistor (6)
Wire-to-Board-Connectors (as needed)
프로젝트 ID: #15832258
프로젝트 소개
이 일자리에 대한 프리랜서 24 명의 평균 입찰가: $576
Hi I am experienced embedded system designer with more than 8 years of experience, I can provide you all of your deliverables Please get in touch if you are interested in working with me Relevant Skills and Experience 기타
Hi There, I-TECH will deliver complete PCB design with 3D renders to make sure that PCB has proper placement of parts, we will do the Firmware as well. Relevant Skills and Experience I-TECH is highly experienced in de 기타
Hi. Congratulations on your description. One of the best and most complete I have seen. A custom shield for arduino using 3 Pressure sensor. Each sensor has a Tsmax 30ms (50 max) and VDD 3.3V and fixed I2C a 기타
I'm very interesting in your job. i have a large experience in this area. Please feel free to check my profile and I always support "first time right design". Relevant Skills and Experience I have a high skill in pcb 기타
I'm confident that I can finish the project the other freelancer has abandoned. If you have any concerns, just message me. Relevant Skills and Experience Broad Arduino development experience Proposed Milestones $260 기타
I have been doing PCB for many years. I work very professionally. I usually take the circuit diagram, then analyze the unreasonable place. When the diagram was finished, I started to draw the PCB. I will add footprint, 기타
I am best in PCB design. The price & time i have entered is tentative & negotiable. you can chat any time for techno Commercial Discussion. Thanks.
