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I'm in Iowa all week on business but I'll post it up on my blog when I get back. I have my work laptop, not my personal one so I don't have the pdf. The diagram is pretty simple. A couple of Caps, a voltage regulator and a few resistors. The Red Lion work off an internal battery that supposed to have a 10 year life span. The circuit is only for the optical sensor so you end up with a pulse input to the counter. In the picture on my post (it is probably not too clear) behind the bobbin plate is a washer that is half painted flat black. The sensor I chose emits IR and measures the reflection back. With the counter/sensor combo I picked, it is good past 2k rpm.
Anybody know what there is to do in Des Moines?
Michael R Cossey said:Don,
I sure would like to have a copy of that diagram, It would come in handy in my near future.......
Thanks, Mike
"I purchased a red lion counter on Ebay for $15 and an optical sensor from Newark Electronics. I needed to build a simple power supply circuit for the sensor. I can provide the diagram to anyone that wants it."
Thanks Don, No rush anyway, I'll have to see if I can wrap my head around it, Not my strongest area ...
Mike
Don Goguen said:I'm in Iowa all week on business but I'll post it up on my blog when I get back. I have my work laptop, not my personal one so I don't have the pdf. The diagram is pretty simple. A couple of Caps, a voltage regulator and a few resistors. The Red Lion work off an internal battery that supposed to have a 10 year life span. The circuit is only for the optical sensor so you end up with a pulse input to the counter. In the picture on my post (it is probably not too clear) behind the bobbin plate is a washer that is half painted flat black. The sensor I chose emits IR and measures the reflection back. With the counter/sensor combo I picked, it is good past 2k rpm.
Anybody know what there is to do in Des Moines?
Michael R Cossey said:Don,
I sure would like to have a copy of that diagram, It would come in handy in my near future.......
Thanks, Mike
"I purchased a red lion counter on Ebay for $15 and an optical sensor from Newark Electronics. I needed to build a simple power supply circuit for the sensor. I can provide the diagram to anyone that wants it."
Thanks Don, No rush anyway, I'll have to see if I can wrap my head around it, Not my strongest area ...
Mike Don Goguen said:
I'm in Iowa all week on business but I'll post it up on my blog when I get back. I have my work laptop, not my personal one so I don't have the pdf. The diagram is pretty simple. A couple of Caps, a voltage regulator and a few resistors. The Red Lion work off an internal battery that supposed to have a 10 year life span. The circuit is only for the optical sensor so you end up with a pulse input to the counter. In the picture on my post (it is probably not too clear) behind the bobbin plate is a washer that is half painted flat black. The sensor I chose emits IR and measures the reflection back. With the counter/sensor combo I picked, it is good past 2k rpm.
Anybody know what there is to do in Des Moines? Michael R Cossey said:
Don,
I sure would like to have a copy of that diagram, It would come in handy in my near future.......
Thanks, Mike "I purchased a red lion counter on Ebay for $15 and an optical sensor from Newark Electronics. I needed to build a simple power supply circuit for the sensor. I can provide the diagram to anyone that wants it."
Well work in Iowa in not going smoothly and I'm up at 2am trying to get my mind off of it. Mike, I found the schematic diagram for the counter. Here it is.
From left to right, I'll explain the build. You can ignore D1 if you want. Starting with with the voltage source, use a junk wall wart of some DC voltage between 5 and 16 volts. There is probably something in your junk drawer you can use. Just make sure it is DC and not AC output. You can breadboard this on a small experimenter pc board from radio shack. The next device is an LM7805 between two capacitors. This is a 5 volt regulator. Radio shack sells one for less than two bucks. I don't think it is the LM7805 but the one they sell is similar and will work. The caps are there for filtering and current storage. any voltage rating that is above your wall wart supply value will work (like 25volt caps). R1 and the led is optional but it is nice to have an indicator letting you know your power is working. R2, r3 and the QRB1114 is the working part of this circuit. What makes this work is when the sensor sees the change in reflected light (dark to light), it drops the voltage to ground. The voltage at the junction of R3 and the counter goes from 5 volts to something less than 2 volts (digital high to low). The counter responds to this change in voltage and adds one to the count. Pretty simple. Unless the counter you go with has a reset input, ignore the counter reset switch. Mine came with one on the front panel and no reset input.
The voltage regulator has the pin outs for input, output and ground on the package. The spec sheet for the sensor can be had online. It has a diagram on which pin is what. Really the hardest part to this is the mechanical. It works best if you design that with a 50% duty cycle. For example I used a washer painted half flat black or 50%. I polished the washer first to make sure the surface was reflective. So what ever rotational part you use to count needs shiny and dark, half and half. This maximizes the speed at which the circuit will count.
Michael R Cossey said:
Thanks Don, No rush anyway, I'll have to see if I can wrap my head around it, Not my strongest area ...
Mike
Don Goguen said:
I'm in Iowa all week on business but I'll post it up on my blog when I get back. I have my work laptop, not my personal one so I don't have the pdf. The diagram is pretty simple. A couple of Caps, a voltage regulator and a few resistors. The Red Lion work off an internal battery that supposed to have a 10 year life span. The circuit is only for the optical sensor so you end up with a pulse input to the counter. In the picture on my post (it is probably not too clear) behind the bobbin plate is a washer that is half painted flat black. The sensor I chose emits IR and measures the reflection back. With the counter/sensor combo I picked, it is good past 2k rpm.
Anybody know what there is to do in Des Moines? Michael R Cossey said:
Don,
I sure would like to have a copy of that diagram, It would come in handy in my near future.......
Thanks, Mike "I purchased a red lion counter on Ebay for $15 and an optical sensor from Newark Electronics. I needed to build a simple power supply circuit for the sensor. I can provide the diagram to anyone that wants it."
Toadie, there was a seperate discussion on this somewhere recently, but to the best of my knowledge no one has confirmed or provided results of their experiments. I have a few wheel speed sensors, a cam position sensor and some odds and ends I intend to wire up and do some testing with, but getting to that is a ways off at this point.
On the subject of building/winding your own: Any of you that have experience/knowledge with this care to explain the "scatter" winding term/theory I see from time to time? I have some experience with custom/hand winding some other unrelated electrical/electromagnet components, and the thought is that carefully laid parallel winds are most efficient as crossed wires may tend to "cancel" each other out to some degree. So I am curious as to the thinking with mag pup winding.
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