Which counter

[Joe Gwinn]

"Could I use this opto switch as the trigger?"

I guess I misplaced a decimal point somewhere when doing the mental math in converting time to frequency. f=1/t Which also means that the duty cycle of the pulse is a smaller fraction the max frequency then I originally thought (which is a good thing). Doesn't pay to do math before coffee. Also means I'm off on max rpm by a factor of two.

What max rpm do you seek?

Anyway, if the question above is still open, then the answer would certainly be yes. The real consideration is making sure there is a reliable contrast between states for the sensor. I initially worried that the sensor I used would not trigger properly or reliably with just using the flat black paint and shining up the washer. Once I got the distance between the sensor and the washer set correctly, there have been no issues at the speed I wind. It seems to close or so far produces errors using only variations in reflectivity with the level of lighting I use to wind (old eyes).

Use a polished stainless steel fender washer with one half painted black, watched by a sensor designed for reflective surfaces. And, put a metal cover over the whole thing so ambient light doesn't confuse the sensor. (The problem with plastic is that many plastics are transparent to IR light, however black they look to the eye. So, use aluminum, even thin aluminum.)

Which Red Lion counter are you using? If it's a CUB3 (which I have), it will go to 6000 rpm. The minimum pulse width (and spacing between pulses) is 5 milliseconds, for a total cycle time of 10 mS. One cycle per 10 mS is 100 cycles (rotations) per second, or 6000 rotations per minute. This ought to do it

[Joe Gwinn]

Thanks for the great input.

What about a Voltage Regulator 7805?

Welcome.

A 7805 will work, but you will not be able to adjust it to exactly 5 volts, so the scale factor (volts per gauss) may be a bit off.

I think you can buy the correct regulator from DigiKey.

While I am on the subject:
I am doing a set of pups and was wondering if having a connection between the pickup and pot would be detrimental to the tone of the pup and will it add resistance?

Which pot, where? I don't understand the question.

[Bill Scheltema]

Hi again

I may have justr found a source for digikey and newark through a friend who may be able to get some of this stuff through samples.

Here is what I am thinking.

[Joe Gwinn]

Here [an image] is what I am thinking.

Given that it's a standard SD wiring diagram, I assume that it works. But, both pots will affect tone somehow. It's a matter of opinion and intent if this is good or bad.

[Bill Scheltema]

LP2951CN source

Well I looked into it and my inside source can get them but there is a 1500 minimum order, so no go there.

Any other regulator thoughts? The LM385 also has large minimum orders.
As for the A7805 and fine tuning it to 5v is out of my league.

Any help would help.

Bill

[David Schwab]

While I am on the subject:
I am doing a set of pups and was wondering if having a connection between the pickup and pot would be detrimental to the tone of the pup and will it add resistance?

If the contacts are clean it will work fine.

I do mine this way.

[Bill Scheltema]

A1302 Hall sensor arrived

Well my hall effect sensor arrived and since my optical switch is still on the way, I may try using the A1302 to trigger the veeder root counter.

I think this will work, yes? I'll use the 7805 reg. and my dc output from the counter.

Bill

[Joe Gwinn]

Well I looked into it and my inside source can get them but there is a 1500 minimum order, so no go there.

Any other regulator thoughts? The LM385 also has large minimum orders.
As for the A7805 and fine tuning it to 5v is out of my league.

I don't understand why you cannot use DigiKey, which has an office in Canada.

These are US $0.86 each, and min quantity is one. Digi-Key - LP2951CNGOS-ND (Manufacturer - LP2951CNG)

DigiKey Corp. | Electronic Components Distributor | Canada Home Page

[Bill Scheltema]

Gwinn

Yes you are correct, I misread the info which stated standard package as 50 which linked to a fuller description.

Thanks.

Bill

[Bill Scheltema]

Optiswitch arrived

So I went over the diagrams and saw this on page 3 of the veeder root manual.
Solid State Outputs
Output 1: Terminal 1 (OUT 1)
Output 2: Terminal 2 (OUT 2)
Type: NPN open collector, sink to COM
Output High: 30 VDC max., 100 mA. max.
leakage current
Output Low: 1 VDC max., 100 mA. max.
Operation: Latched; or Momentary from 0.01 to
99.99 sec. +0, –10 msec.

So I connected my
pin #1 (+anode) to terminal #1 OUT
pin #2 (-cathode) to terminal #6 COMM
pin# 4 (emitter) to terminal #4 SIGNAL in my case.
pin# 3 (collector) to the same terminal #6 as the cathode.

Anyways this is what I did but got no response from the counter.

So I am trying to decipher this little unit and should I be looking down or bottom up when locating the pins,
As the diagram shows pin #3 location
http://www.veeder-rootcounters.com/u...set_Manual.pdf
The counter has internal resistors so I set my #5 switch to down as it recommends.

Not sure where I am missing it, do I have enough juice going to the switch?

Bill

[Joe Gwinn]

Please post a circuit diagram.

[Bill Scheltema]

Thanks alot for the help

I think this is what you are asking for, this is what is in the veeder root manual.

The diagram is only showing one side of the switch I think.

#1,2 are output 1&2
#3 is +VDC
#4,5 are SIGNAL A/B
#6 is COM

FROM MANUAL:
Solid State Outputs
Output 1: Terminal 1 (OUT 1)
Output 2: Terminal 2 (OUT 2)
Type: NPN open collector, sink to COM
Output High: 30 VDC max., 100 mA. max.
leakage current
Output Low: 1 VDC max., 100 mA. max.
Operation: Latched; or Momentary from 0.01 to
99.99 sec. +0, –10 msec.
Assignment: Output 1 turns on at Preset 1,
turns off at manual Reset; Output 2 turns on
at Preset 2, turns off at manual Reset;
(Output 2 turns on at Counter=0, turns off at
Reset if switch #3 is down)

Count Inputs
Signal A: Terminal 4 (SIG A)
Signal B: Terminal 5 (SIG B)
Input Voltage, High: 3 min. to 26 VDC max.
Input Voltage, Low: 0 min. to 2.0 VDC max.
Input Impedance: 10 kW to COM; optional 4.7
kW to +VDC when switch #5 is down
Input Response: 200 msec. min. pulse; 25 msec.
min. pulse when switch #6 is down



Thanks again.
What about the optical switch pin location?

Is my layout correct?

Bill

[Bill Scheltema]

Still working on it

Well, I am still unable to get this switch to work.
I am not sure where I am going wrong.

Any help would be very much appreciated, my electronics knowledge is very soft.
Found this on the optek site
http://www.optekinc.com/pdf/App%20Bu...Components.pdf

Here is my latest build though?
Bill

[Bill Scheltema]

More digging

So I did a bit more searching and found this pdf. If you look at the pin locations they donnot match the other pdf I had posted.
They show a bottom up view but the arrow (I think) is going in the wrong direction.

Any advise guys?

Bill