Hi
I start electronic and arduino.If I want to use arduino to get the signal from pickup coil of my bike.How can I do it?
Give more information on what the coil is used for and how it works.
Weedpharma
My problems same this post How to connect the Magnetic Sensor with arduino for my Tachometer Project - Project Guidance - Arduino Forum
I want to know how the circuit works.
There is a lot of discussion in that post. What specifically do you not understand?
Please use more than one simple sentence. Do not make us drag the information out of you.
Weedpharma
sorry
Pick up coil is used for sending AC CDI box in order to ignition.
Am not sure pick up coil send AC voltage 3-12 vac.
If I want to use aduino to get signal from the pick up coil. How to modify circuit(Please see picture) ?
Use the cct in reply #10
LarryD:
Use the cct in reply #10
What is cct?
Fig. 33 of the data sheet:
LarryD:
Use the cct in reply #10
This is the 10th reply in the URL you quoted.
http://forum.arduino.cc/index.php?topic=231098.0
It refers to page 18 of the document above byLarryD
Weed
weedpharma:
This is the 10th reply in the URL you quoted.It refers to page 18 of the document above byLarryD
Weed
Thank you
Please note, if your pickup coil is producing less than or equal to 3 volt pulses this circuit will work.
For the Arduino, V+ = 5 volts not 15 as shown in Fig. 33
I tried to measure the voltage out 250mv. Circuit can be used?
I have used a 75mv o/p coil with this circuit.
LarryD:
I have used a 75mv o/p coil with this circuit.
Thanks. LarryD
Can we back up a little? I would expect the voltage from your pickups to be higher than what you have measured.
What device are you using to measure them?
Are you measuring the levels by looking at the waveforms on an oscilloscope, or are you measuring them with a voltmeter of some sort? Because if you're using a voltmeter, you might not be getting what you think you're getting.
Also in case you aren't aware... The amplitude of the voltage out of the pickups is probably proportional to the speed of rotation. The faster the spin, the higher the output voltage. So if you're spinning it by hand, you will get a much lower voltage than you would when the bike is running.
HACF:
Can we back up a little? I would expect the voltage from your pickups to be higher than what you have measured.What device are you using to measure them?
Are you measuring the levels by looking at the waveforms on an oscilloscope, or are you measuring them with a voltmeter of some sort? Because if you're using a voltmeter, you might not be getting what you think you're getting.
Also in case you aren't aware... The amplitude of the voltage out of the pickups is probably proportional to the speed of rotation. The faster the spin, the higher the output voltage. So if you're spinning it by hand, you will get a much lower voltage than you would when the bike is running.
How much output from it?
I find in internet and found it. https://www.youtube.com/watch?v=f6Yv36EAjW0
How much? Well from that video they tested two different pickups at two different gaps and got four results:
Pickup #1 at what they say is too wide of a gap produced 3.0V.
Pickup #1 at what they say is a correct gap produced 12.0V.
Pickup #2 at what they say is too wide of a gap produced 2.0V.
Pickup #2 at what they say is a correct gap produced 9.0V.
Because of the way those pickups work, the wider the gap, the lower the voltage. And also note that they're only spinning at 350 RPM which is probably about half the speed you're going to see even at idle. The voltage will go up proportionally to the speed of rotation.
Hi HACF and all
I fine in internet and see this page
and
I do not know how to adapt to the arduino or not.
Thanks.
Oldsnake00, I'm not sure what it is you're asking... I think I understand the main point that you want to use an Arduino based design to run the ignition system on a motorcycle. But I'm not sure where you are in the course of your project.
If you have created a prototype design and are looking for someone to troubleshoot your existing prototype, I'm sure there are lots of people here qualified to do that. Post your schematics and your code and I'm sure people can help.
However if you have no hardware and no software and no knowledge of how any of it is supposed to work and you're asking for someone to design it for you, then I'm not so sure that's going to happen.
That project is going to be a non-trivial mix of analog and digital hardware design as well as software coding where definitive time-critical processing is important which might not be the easiest thing to do in the Arduino environment with all the higher level shells around the code that make programming an Arduino so simple.
So have you got schematics for your design?
Oldsnake00, I wanted to make sure you didn't misunderstand my comments about a cycle ignition project. I think it's a neat project, and in fact, I've spent a little time thinking about the same kind of project for use on my motorcycle.
I'm sure it can be done, and in fact, in and the second link you posted, it looks like that guy built one using a Microchip microcontroller. If it can be done on a PIC, it should be possible to do it on the right device from Atmel.
So if you're asking if it's POSSIBLE? Then the answer is probably "Yes".
If you're asking "Has anyone done it with an Arduino?" then my answer is "I don't know, but not me."
I know a little about the concept and have done some investigation into it, but I've not designed a circuit or written any software. So please don't think I'm poo-pooing the project. I think it's a great project, but I just think unless you turn up someone who has done it already and wants to share the details of the design, you're going to have to do it yourself.