About Me
Hello Everybody!!!
My name is SM Nawaz and I am an engineer. My primary interests are in Microelectronics, Nano-fabrication, DSP, and Power and Energy Systems.
This blog is mainly for my research purpose and circuit design. It will also be educational helpfully site and I will try to explain all my work and ideas.
Hope you people will help me to make this site rich and resourceful.
SMN Technology 
Oct 06, 2012 @ 21:59:53
Hello, Thank you for posting your Gatsometer project. I am now building a sport timer project with the Kodenshi PIE310/PID310D photo-interrupter. I believe that there are many errors in your circuit diagram. IR receiver and IR sender pin connections do not match the circuit diagrams on the Kodenshi website. Because of these errors, the connections to the DB9 connector are also incorrect. Please confirm that you have made some errors. This will allow me to correctly build my own project. lewis.heilig@videotron.ca
Oct 16, 2012 @ 13:24:30
I have provided connectivity of DB9 connectors. please follow these steps. I will update the diagram later.
DB9 Male (connect with 4 sensors)
PIN Conf
1 ==> PIE pin2 (First Sensor)
2 ==> PIE pin3 (both sensors)
3 ==> PIE pin2 (Second Sensor)
4 ==> PIE pin1 (both sensors)
5 ==> PID pin1 (First Sensor)
6 ==> PID pin3 (both sensors)
7 ==> PID pin1 (Second Sensor)
8 ==> PID pin2 (First Sensor)
9 ==> PID pin2 (Second Sensor)
DB9 Female (connect with main circuit)
PIN conf
1 VCC
2 GND
3 VCC
4 GND
5 VCC
6 GND
7 VCC
8 connect to uC
9 connect to uC
Thank you.
Oct 16, 2012 @ 15:42:40
Thank you for your correction. What is purpose of PIE pin 3? I have asked Kodenshi to explain.
Nov 01, 2012 @ 22:43:58
I have connected PIE pin3 to GND and the modules will not function. When I make no connection to PIE pin3, then the modules function correctly. I cannot exceed 3 meters (10 feet) between the two modules. I need 6 meters for my outdoor sports timer, so I am very disappointed that Kodenshi made a mistake in their datasheet claiming that the maximum distance is 8.5 meters.
Nov 02, 2012 @ 20:50:45
Update – today I added a lens of 2.5 cm. diameter at a distance of 5 cm. in front of the PID310D detector module and I was able to obtain a range of 8.5 meters. To determine the position of the lens, in a dark room, I placed a light bulb of 50 watts next to the PIE310 emitter module and moved the lens until the light from the bulb was completely focused on the black lens of the PID310D module. Without a lens, it is impossible to exceed 3 meters of range.
Nov 07, 2012 @ 14:50:16
yes it is better to narrow beam lens to get max length. also try using other photo diode.
Nov 07, 2012 @ 18:01:34
The PIE310 module creates a modulated light beam. To use another photo diode, we need to know the frequency of the modulation in kilohertz. We also need to keep this frequency very stable. This is not an easy alternative solution to build.
Dec 28, 2012 @ 00:27:44
I have successfully completed my project. I can obtain 23 meters of distance by using a 5x plastic lens in front of PIE310 and in front of PID310. Please remove my email address from the first comment to prevent spamming. Thank you for your help.