Pneumatic Control with Sensor Integration

I need a microcontroller-based system to control a pneumatic solenoid. The system should integrate a photoelectric sensor for detection and allow for variable delays.

Key Requirements:
- Use of Arduino or Raspberry Pi
- Control pneumatic solenoid
- Integrate photoelectric sensor
- Implement variable delays

Ideal Skills and Experience:
- Experience with microcontrollers
- Familiarity with pneumatic systems
- Knowledge of photoelectric sensors
- Programming for variable delay control

Looking for a freelancer who can deliver a reliable and efficient control system.