Can we have a part number/source for the connector plug please?
@_vlnt_78002 жыл бұрын
Nice job! You just got a new sub
@petarmiletic9973 жыл бұрын
I am confused how does the hall effect sensor work if you are not using magnets in the rotor ??
@lyndonevans12513 жыл бұрын
Automotive Hall sensors have a magnet built in behind the sensor, as the metal teeth pass the sensor they distupt the magnetic field which causes the switch.
@petarmiletic9973 жыл бұрын
@@lyndonevans1251I understand. So similar to variable reluctance, but rather than using a coil to sense the changing magnetic field they use a hall effect sensor. BTW do you have any idea on the max frequency this sensor could handle ? I need something for ring gear speed sensing for a diesel engine, 144 teeth per revolution, so at max 5000rpm the signal frequency would be max 12 kHz. I like it better than variable reluctance sensors, no signal conditioning needed
@jiiizmo3 жыл бұрын
Hi, I will be running this setup on my speeduino, does the sensor require a pull up resistor in order to work?
@lyndonevans12513 жыл бұрын
Introduction 2/15 I wanted to know what the signal output from the Speeduino (0.3.x or 0.4.x) rpm pin looks like on a 4 pot 4 stroke engine I assumed it would be a 5volt square wave at a frequency of rpm*2, which it is. I decided to get the oscilloscope out and look at the signal and this is what I found Speeduino/ Arduino Output Pin 3/15 The rpm out signal comes from the Arduino pin 49. There is no specific RPM connection on the 0.3.x Speeduino board Speeduino/ Arduino Output Pin Connection 4/15 Speeduino pin 49 is conveniently placed next to the proto area, so a simple bridge connection can be made between the pin base and an unused section of the proto area, thus Connecting The Output 5/15 The RPM out is a direct connection to the Arduino so it can only sink a very small current and it is a 5 volt signal. (Tachometers need a 12 volt signal) The following diagram shows the output connected through an Opt-isolator, this protects the Arduino and allows us to convert the signal to a more robust 12 volt version of the output. This opt-isolator converts the signal from 5 volts to 12 volts This is the circuit: 6/15 A87 4 Channel Opto-coupler Isolation Module High And Low Level Expansion Board - Banggood et al Calculating RPM From Frequency First 8/15 From this you can see the wavelength time is about 25ms (5 squares at 5ms per square) Frequency is 1000/25 = 40Hz (One second/ wavelength) RPM = frequency * 60/2 = 1200 (convert from sec. To min.) All good so far The second picture shows the signal at just over 6500rpm 9/15 Calculating RPM From Frequency Second 10/15 From this you can see the wavelength time is about 4.8ms (just under 1 square at 5ms per square) So frequency is 1000/4.8 = 208Hz RPM = frequency * 60/2 = 6250 Still good. Things to note 11/15 The OFF time for the wave is constant at 3ms (configurable in TS), the ON time decreases as the rpm/frequency increases. TunerStudio config window> The 3ms rpm pulse width is OK to about 9000rpm but you will need to decrease it if your engine revs above. 12/15 The next picture/video shows what happens to the signal as the rpm increases, if you notice a dropout at the top of the rev range this is my rev limiter kicking in Connections 1 14/15 There are no components mounted on the proto area just two wires connected to the Speeduino board. It uses the A87 four channel opt-ocoupler module available from eBay or Banggood. It costs about $2. The two connections from the Speeduino are: 1. From ground on the Speeduino to IN Gnd on the A87. 2. And from Arduino pin 49 to IN4 on the A87 this is a 0volt or 5volt digital pulse, the input put are opto-isolated. Connections 2 15/15 From the output side of the A87 we are are using only one of the four channels (three are still available) The connections used on the output side of the A87 are: 1. Gnd is connected to the vehicle Ground. 2. Hvcc is connected to the vehicle +12 volts. 3. OUT4 this is the Tach signal output and is a 0volt/Hvcc digital pulse so when Hvcc is +12 volts the signal is 0volt/+12volt. Hvcc can be in the Range 5 to 24 volts. So the device can also act as a protocol converter. The 0/5 volt pulse from pin 49 is converted to a 0/12 volt pulse to the tach. Test setup 16/15 My test rig is a Speduino 0.3.7 connected to a SpeedySim and a stock after-market tach with three wire connection: Gnd, +12volts and tach signal. Here is a short video clip of the setup in action. Thanks for watching 18/15 All the text in this video is listed below so you can translate it if you need to.
@enriquemartinez15964 жыл бұрын
Which brand is the escope???
@benroweben4 жыл бұрын
Great video mate thanks for taking the time
@lyndonevans12514 жыл бұрын
Hi Ben Thanks, an important point about this sensor is that it must be mounted with the connector plug at 90° to the trigger wheel (not in line with it)! Or to put it another way the connector plug must be in line with the centre line of the crank.
@GCMasterD4 жыл бұрын
i have a 36-1 trigger wheell and e36 hall sensor and the speeduino dont have rpm signal, help me plz
@GCMasterD4 жыл бұрын
Jumper config on speeduino? I dont have any signal
@steveguest80285 жыл бұрын
What oscilloscope is that ?
@lyndonevans12515 жыл бұрын
I don't use 0.4.x boards but from the manual, looks like pin 25 is signal data for crank sensor, pin 9, 10 or 12 (gnd) for the gnd connector and you need a +12volts for the other wire.
@Jorge_11ernandez5 жыл бұрын
Could you tell me to which pins each cable is connected in the speeduino 40 idc socket? Thanks
@praveenkhanna7836 жыл бұрын
I want to use a hall effect sensor for measuring the rpm of the trigger wheel. I need help in how to measure the rpm so I need a formula for that ( normally based on the teeth in the trigger wheel)
@lyndonevans12516 жыл бұрын
OK Why dont you use a trigger wheel with one tooth. Count the pulses per second and multiply by 60. Or if its low speed use 4 teeth and multiply by 15. Keep it simple.
@praveenkhanna7836 жыл бұрын
@@lyndonevans1251 the tooth wheel is already design with 36 teeth .I'm using a hall effect sensor which will see the air gap between the teeth according to it it will produce the output
@praveenkhanna7836 жыл бұрын
IS CODE IS THERE FOR THIS TO USE IN ARDUINO
@lyndonevans12516 жыл бұрын
Speeduino works with 36-1. The output signal is a van be connected to rpm.
@FilterYT6 жыл бұрын
I'm glad to be aware of a Hall effect sensor that has simple 3 wire connection and digital output. Thanks for sharing.
@johnsmith-cu2pg6 жыл бұрын
Try to run that trigger over 4000rpm. I get sinc loose after that point. I use more tick trigger now. With 306 s16 vr sensor
@lyndonevans12516 жыл бұрын
Strange. This runs on a 60-2 on a BMW. What diameter/tooth count are you using.
@johnsmith-cu2pg6 жыл бұрын
The same trigger as you but 130mm it was made for siera rs 36-1
@lyndonevans12516 жыл бұрын
Hi No this is the only wheel i have at the moment. Sorry
@SidneyCritic6 жыл бұрын
Do you have another wheel with less tooth mass. I was wondering how small you can go before it has trouble working, ie will it work with 3mm teeth on a 3mm thick disk.
@abcbcde99858 жыл бұрын
Oddly.. a song sung in English.....
@abcbcde99858 жыл бұрын
I thought Wales had their own 'last night of the proms' in 2016?