Help with Velocity Counter Project Using Photo Diode

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SUMMARY

The discussion focuses on creating a Velocity Counter using photo diodes and laser lights. The proposed setup involves placing photo diodes at both ends of a track, with laser beams directed at them. The counter is designed to start timing when a toy car interrupts the first beam and stop when it interrupts the second beam. Participants are encouraged to share initial circuit diagrams for constructive feedback.

PREREQUISITES
  • Understanding of photo diode operation and applications
  • Basic knowledge of circuit design and diagramming
  • Familiarity with timing mechanisms in electronic projects
  • Experience with laser light alignment and safety precautions
NEXT STEPS
  • Research circuit design for photo diode applications
  • Learn about timing circuits using microcontrollers
  • Explore laser safety standards and alignment techniques
  • Investigate methods for measuring velocity in electronic projects
USEFUL FOR

Electronics hobbyists, students in physics or engineering, and anyone interested in building velocity measurement devices using photo diodes.

Ali Inam
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Hi, I am making up a Velocity Counter using a photo diode. I have planned it to be in the following way:

I will be having two ends, on both of those ends I will be having photo diodes on one side and laser lights falling on the diodes from exactly opposite sides. Now I will make a toy car move, once the toy car intercepts the first light beam, I want my counter to start the time immediately and as soon as it intercepts the other beam, I want it to stop.


Can anyone guide me please.

Thanks...!
 
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Ali Inam said:
Hi, I am making up a Velocity Counter using a photo diode. I have planned it to be in the following way:

I will be having two ends, on both of those ends I will be having photo diodes on one side and laser lights falling on the diodes from exactly opposite sides. Now I will make a toy car move, once the toy car intercepts the first light beam, I want my counter to start the time immediately and as soon as it intercepts the other beam, I want it to stop.


Can anyone guide me please.

Thanks...!

We don't do your projects for you here on the PF. Please post your initial circuit diagram so that we can offer comments on your work.
 

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