Help with Velocity Counter Project Using Photo Diode

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In summary, the individual is seeking guidance on creating a Velocity Counter using a photo diode. The plan is to have photo diodes on both ends with laser lights. When a toy car intercepts the first light beam, the counter will start the time and stop when it intercepts the other beam. They are seeking feedback on their initial circuit diagram.
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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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  • #2
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.
 

FAQ: Help with Velocity Counter Project Using Photo Diode

What is a velocity counter project using a photo diode?

A velocity counter project using a photo diode is a scientific experiment or project that uses a photo diode to measure the speed or velocity of an object. The photo diode is a type of light-sensitive semiconductor that produces an electric current when exposed to light. By measuring the changes in the electric current, the velocity of an object passing by the photo diode can be calculated and tracked.

What materials are needed for a velocity counter project using a photo diode?

The materials needed for this project include a photo diode, a light source (such as a laser), a power source (such as a battery), a voltage regulator, a microcontroller, and various electronic components such as resistors and capacitors. You may also need a breadboard or PCB to assemble the circuit.

3. How does a photo diode work in a velocity counter project?

A photo diode works by converting light energy into electric energy. When light hits the photo diode, it creates an electric current that can be measured and used to determine the velocity of an object. The faster the object moves, the more the light will be blocked, resulting in a larger change in the electric current.

4. What are the potential applications of a velocity counter project using a photo diode?

There are many potential applications for a velocity counter project using a photo diode. It can be used in speed cameras to catch speeding drivers, in motion sensors for security systems, in sports to measure the speed of a ball or athlete, and in scientific experiments to track the velocity of moving objects. It can also be used in industrial settings for quality control and monitoring of production processes.

5. What are the limitations of a velocity counter project using a photo diode?

One limitation of this project is that the accuracy of the velocity readings can be affected by external factors such as ambient light and the angle of the object passing by the photo diode. The size and shape of the object can also affect the accuracy of the results. Additionally, the circuit and programming of the microcontroller must be carefully designed to ensure accurate and reliable measurements.

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