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OK guys, I will try my thing, Thank you for your time....

If measuring is quantifying the position, then how does it differ from detecting the laser spot. Could elaborate please. I've already tried understanding the sampling rate, but I will try more. Any data logger satisfying my needs?

The reason for that question is I will be using a stepper motor in a day or two, and I just wanted to know if I can rotate it continuously like a DC motor. Just making sure I am not damaging it. Anyhow, thank you both of you...

By tracking I meant that I first want to measure the position of the laser beam so that I can get used with using the equipment and with the process. I have some mount to place the photodiode on and a linear stage to move the laser beam which somewhat looks like the one in the image in the...

Can we rotate a stepper motor in the same direction continuously after it rotates 360 degrees in one direction. Does any damage happen to the motor if we do so?

Although there many other applications of PSDs with the laser beam, first of all I want to track the movement of the laser beam to get onto the track. The datasheet of the PSD I am using and the schematic I want to build are available in the links I posted earlier. Instead of using the dividers...

I don't think I quite get it. You are saying that I have to move the quadrant detector. 1.Keeping the laser beam steady and moving quadrant detector for centering the beam and 2. Moving the beam to the center of the detector. Aren't both of them the same. Why to move the detector while nulling...

My main intention is to track the laser beam position by using the quadrant PSD with the help of labVIEW. I,ve finished the sum and differential part and I am going to try to amplify the output of the PSD. I've known by googling that we first make the X and Y outputs zero by centering the beam...

I may have to. The thing is I am new to all these things. I thought that the data from the data logger can be read into the labVIEW if the data logger is connected to PC. So please suggest me a cost effective data logger whose data can be read into the LV and which is suitable for my...

Thank you all.. I want to analyze the three outputs X,Y,SUM by using labVIEW. Can anyone suggest me a cost effective 3-channel data logger with PC connectivity for my project. Vinay Kumar

I want run a micro stepper motor by using arduino and convert the rotary motion of the motor into linear. Can anyone suggest me what type of arduino, driving IC, motion converter I can choose specifically...

Thank you for your reply.. I want to use the 4 quadrant position sensing detector of Hamamatsu_s4349. I've pasted the link below which leads to the datasheet of the photo diode. I've known that each quadrant of the photo detector provides a current in the range of nA. I first want to build the...

I want to build the circuit attached with this post to measure the position of the laser. Please clarify my doubts regarding it 1. What is the current range produced by each quadrant in the photo detector. 2. Can the gain of the transimpedance amplifiers and sum and difference affect the...