Thanks for this. Based on your instructions, I was able to test my sensor and find it was in the process of failing, but not dead yet. We've ordered a replacement, and in the meantime, we were able to shift the sensor closer to the pulley magnet to get the switch to close. Symptoms from the treadmill was erratic speed over several days before it refused to run completely. After unplugging, it would run for approximately 1-2 revolutions on the first attempt before shutting itself off because it was not getting signal from the sensor. (Nautilus t614.)
Great, I knew there was some way to test a magnetic sensor with a meter, nice video ! Now I just have to figure out how to apply this to an ABS sensor, only in my issue the sensor is the actual magnet that in the equation not the conductor.
heloo. i have a 3 wire speed sensor on my bike. i modified the rear wheel and it has only two wire on the speed sensor. is it posible to connect it? 3 wires on my bike and 2 wires on my wheel ? how can i put the wire?
HI - probably not possible. A 2 wire sensor is most likely to be a magnetic reed switch and a 3 wire will be an optical sensor. The two are not compatible.
Hi very good videos I learned a lot.My daughter gave me a Nordictrack Treadmill C2300 model#NTL12905.0 the machine was working fine but when we move the machine with my son in law truck and we put it the power on, the consola buttons dosen't work only show SELECT USER 1 or USER 2.I check the speed sensor like you do and the motor and both work also I cleaned all the ribon cables and conector and still the buttons no working .What you recomende? Thank you very much
Thanks for the video. Is it common for the sensors to fail? My excercise bike is 9 years old and would intermittently not register RPM/speed, now it's packed up completely. I've had a fiddle with the sensor and cable, everything looks ok physically, but not had a multimeter on it yet.
Hi there, after some triaging found the magnet attached to our bike doesn't have any resistance as you show. Any idea where I can find an appropriate magnet? I can only make the sensor work at the moment when I put both ends actually touching magnets in the house (e.g. on cabinet doors)
I want to test a sensor on a boat diesel engine (tachometer isn't working) and I thought the key was ohms/resistance. Is a continuity sensor different from a resistance sensor?
@@chartered.engineer Thanks for the reply. If I get the on-off continuity signal (beeping) then the sensor is good? Also, now that I think of it, idle is about 800 rpm - that's 13 continuity beeps/second. Is that why measuring ohms is better?
@@taylorjs2534 The continuity is a convenient pass/fail measurement setting (ie. a you get a beep or no-beep) whereas a resistance reading in ohms has to be interpreted and you need to decide yourself whether the measured value is a pass or fail. The reed switch will be able to respond much faster then your test meter and so you should test the sensor in a static, known "on" position and again in the "off " position. You would need an oscilloscope to read 13 beeps per second (this instrument shows a fast moving waveform on a screen but is usually expensive and complicated to use but it can cope with measuring rapidly changing signals!).
Thanks for your video. I've been struggling to build an electronic ignition system for my Trabant 601 (the car that's in my avatar). This engine uses two points and two coils (one set for each cylinder). It's a 2 cylinder 2 stroke engine. Looks kind of like a snowmobile engine. This same setup was commonly used on twin cylinder motorcycle engines. I had been using two of those points conversion systems but I am not having much luck. I bought a speed sensor for a Cummins Diesel I want to experiment with. After watching your video it appears that there are is no control module involved in the system? Like on an GM HEI system that uses a magnetic pickup, star trigger and a control module? So if I mounted this speed sensor in the ignition housing then connected one wire from the speed sensor to ground then the other wire to the negative side of the ignition coil, would that work? Or would I have to connect this speed sensor to some sort of control module? Based on your video looks like whenever the magnet approaches to the speed sensor all it does is complete the circuit like a set of breaker points/condensor. Or in other words it looks like a Reed switch. I have tested ignition coils by laying the coil wire on the engine block then connecting a wire to the negative side of the coil with the ignition on and tapped the wire to ground to check for spark. I once forgot to discharge the coil and when I grabbed the coil wire, I got a nasty shock! Thanks.
It was set to continuity and the only voltage this would have would be a small residual charge from contact with skin at best. It's not an electromagnet.
Good day can you do a video of a pull up and pull down hall effect speed or crank sensor,like bench test it just with a battery,sensor and a multimeter
Thanks for this. Based on your instructions, I was able to test my sensor and find it was in the process of failing, but not dead yet. We've ordered a replacement, and in the meantime, we were able to shift the sensor closer to the pulley magnet to get the switch to close. Symptoms from the treadmill was erratic speed over several days before it refused to run completely. After unplugging, it would run for approximately 1-2 revolutions on the first attempt before shutting itself off because it was not getting signal from the sensor. (Nautilus t614.)
Well done Jesse - great work
This man is a smart man. Thanks for the help.
Thanks for your kind words - I am only smart at some things!
Thank you for pointing out the fact that I need a magnet to test my magnetic speed sensor.
You are welcome!
Great video and explained in a simple way, thank you!
Thanks for the feedback!
Great, I knew there was some way to test a magnetic sensor with a meter, nice video !
Now I just have to figure out how to apply this to an ABS sensor, only in my issue the sensor is the actual magnet that in the equation not the conductor.
heloo. i have a 3 wire speed sensor on my bike. i modified the rear wheel and it has only two wire on the speed sensor. is it posible to connect it? 3 wires on my bike and 2 wires on my wheel ? how can i put the wire?
HI - probably not possible. A 2 wire sensor is most likely to be a magnetic reed switch and a 3 wire will be an optical sensor. The two are not compatible.
Thanks I will give this a try wish I saw this before I took out the motor and cleaned all them grooves in that Commutator (1hr later) cough lol.
Hi very good videos I learned a lot.My daughter gave me a Nordictrack Treadmill C2300 model#NTL12905.0 the machine was working fine but when we move the machine with my son in law truck and we put it the power on, the consola buttons dosen't work only show SELECT USER 1 or USER 2.I check the speed sensor like you do and the motor and both work also I cleaned all the ribon cables and conector and still the buttons no working .What you recomende?
Thank you very much
Thanks for the video. Is it common for the sensors to fail? My excercise bike is 9 years old and would intermittently not register RPM/speed, now it's packed up completely. I've had a fiddle with the sensor and cable, everything looks ok physically, but not had a multimeter on it yet.
Yes it is a common fault
Hello, can we use an iron logam instead of magnet?
Hi there, after some triaging found the magnet attached to our bike doesn't have any resistance as you show. Any idea where I can find an appropriate magnet? I can only make the sensor work at the moment when I put both ends actually touching magnets in the house (e.g. on cabinet doors)
I want to test a sensor on a boat diesel engine (tachometer isn't working) and I thought the key was ohms/resistance. Is a continuity sensor different from a resistance sensor?
Hi - A continuity test and a kind of resistance test. With the continuity test, the meter will beep when there is continuity. Hope this helps!
@@chartered.engineer Thanks for the reply. If I get the on-off continuity signal (beeping) then the sensor is good? Also, now that I think of it, idle is about 800 rpm - that's 13 continuity beeps/second. Is that why measuring ohms is better?
@@taylorjs2534 The continuity is a convenient pass/fail measurement setting (ie. a you get a beep or no-beep) whereas a resistance reading in ohms has to be interpreted and you need to decide yourself whether the measured value is a pass or fail. The reed switch will be able to respond much faster then your test meter and so you should test the sensor in a static, known "on" position and again in the "off " position. You would need an oscilloscope to read 13 beeps per second (this instrument shows a fast moving waveform on a screen but is usually expensive and complicated to use but it can cope with measuring rapidly changing signals!).
Very informative
Thanks for the feedback👍
Really informative !
Thanks for your video. I've been struggling to build an electronic ignition system for my Trabant 601 (the car that's in my avatar). This engine uses two points and two coils (one set for each cylinder). It's a 2 cylinder 2 stroke engine. Looks kind of like a snowmobile engine. This same setup was commonly used on twin cylinder motorcycle engines.
I had been using two of those points conversion systems but I am not having much luck. I bought a speed sensor for a Cummins Diesel I want to experiment with. After watching your video it appears that there are is no control module involved in the system? Like on an GM HEI system that uses a magnetic pickup, star trigger and a control module?
So if I mounted this speed sensor in the ignition housing then connected one wire from the speed sensor to ground then the other wire to the negative side of the ignition coil, would that work? Or would I have to connect this speed sensor to some sort of control module?
Based on your video looks like whenever the magnet approaches to the speed sensor all it does is complete the circuit like a set of breaker points/condensor. Or in other words it looks like a Reed switch.
I have tested ignition coils by laying the coil wire on the engine block then connecting a wire to the negative side of the coil with the ignition on and tapped the wire to ground to check for spark. I once forgot to discharge the coil and when I grabbed the coil wire, I got a nasty shock!
Thanks.
I will create more magnetic switches using the same concept
Trabant 601 now that's a Soviet classic that moved the masses.
I haven't seen one in decades, good luck with the project👍
Do you get a voltage reading when your meter is set to alternating current?
It was set to continuity and the only voltage this would have would be a small residual charge from contact with skin at best.
It's not an electromagnet.
Thanks for this info.
Good day can you do a video of a pull up and pull down hall effect speed or crank sensor,like bench test it just with a battery,sensor and a multimeter
Thanks for your suggestion. I will shoot a video for you....
@@charteredengineer thanks
ua-cam.com/video/YF01nVgSRhI/v-deo.html
video for you Ryan!
Hello, how do you test a senzor with 3 wire? Thanks
ua-cam.com/video/YF01nVgSRhI/v-deo.html
What if it's automotive and the magnet is actually IN the sensor?
Email me details jon@northwick.org.uk
And how do you know your speed sensor isn't working
@@elareasecretaful because your multimeter won't beep
@charteredengineer it beeps far and close from the magnet
@@elareasecretaful it should only beep when the magnet is close. There should be no beer when the magnet is far
Good 👍
Nice