develop pcb, software development

Job ID: 37370176

Budget: $250 – $750 USD

I am looking for a freelancer to develop a custom PCB and software for my project.
Project consist of steps
1. Propose MAF Sensor model
2. Develop PCB
3. Software development

Assumptions
1. The board should have cable inputs to which an MAF sensor (a model commonly used in cars) will be connected.
2. Software for analyzing data from the MAF sensor.
3. The PCB communicates via Modbus Slave protocol, RS485 with a master device, providing information about the air flow/current airspeed.
4. The recommended microcontroller is STM32, and the programming environment can be C/C++/C#.
5. The board should have 4 mounting holes around the edges for designing a separate enclosure, which will be a separate project.
6. The PCB enclosure is not part of this project.
7. The model of the MAF sensor is not specified, but it should be cost-effective. The specific model will be chosen based on cost assessment and the availability of documentation to facilitate the execution of the task.