Wiring diagram for fan and photocel PID video

[blockmarc]

I am looking for the Wiring diagram for setup on PID Control that is in video on PID control that is listed on

NI site
http://sine.ni.com/nips/cds/view/p/lang/en/nid/203190#pid 

Video
http://www.youtube.com/watch?v=yK5yLUpgKQQ&feature=related

Thanks anyone for replying this is a very cool setup and I would like to recreate it as a learning experience

[seVEMes]

Hello Blockmarc,

The device pinouts can be found both in the manual on the second link that you sent as well as in MAX. In MAX if you right click on the device there is an option for Device Pinout. As described in the first link you will be looking for AI0 and AO0.

Please let me know if this is what you are looking for.

[blockmarc]

Wow I appreciate your answer. 

I know how to wire up the 6009 what I am looking for is a schematic of the circuit.  They are probably using a high input-impedance unity-gain op-amp to server as a buffer?  Or did they have the output trip a solenoid to turn on the fan.

Also what is the circuit for the fotocel?

I would like to duplicate this model

Thanks for replying

[seVEMes]

Thank you for clearifying your desire. What I understand is that you want to reproduce the video shown on the USB-6211 product page»Virtual Demo»PID Control with the USB 6009.

I'm sorry to say that the circuit diagrams are not available. We do not provide the means to duplicate the exact model shown. We walk you through how to set up the code and allow the user to recreate a model with hardware that they have or are willing to purchase.

[LazarB]

Hello Vince,

I have a related problem. We are reproducing the same fan-photodiode model for this project, and the part with the speed regulation of the fan is just fine.

The problem is:the photoRESISTOR we are using, when we measure it on the multimetre, shows change in resistance, like it should.

So we tried to connect it to the myDAQ by plugging one leg in the 5V source, other leg in the ai0+ and connected the DGND with the ai0+ and measure volts, but the output was none - it was just some fuzzy line around 2V, no change when we changed the amount of light.

We tried to meausre ampers - no progress.

We tried with a photoDIODE - first was great, the  output was like 2,1 room light to 2,6 with a strong beam focused on it. And after a while the response just went bezerk and made no sence. Just stoped responding the way it should have.

So what do we do now? How do we connect a photoRESISTOR(prefered) or a photoDIODE, and read the data? Will we maybe need an operation amplifier?

Thank you,

Lazar B.

[Kyle_A.]

Hi Lazar,

If you connect ai0+ to DGND, I don't believe you would see a voltage on that line since it is grounding out the node in the circuit.  Do you have another resistance in the circuit?