This video describes Automotive Sensors that can be used in your projects. These sensors can be easily interfaced to your favorite microcontroller such as the Arduino platform.
Don't forget relays, and a robust atx power supply can run a car stereo and/or smaller audio sub amps. Green wire to black on the 20 pin connector should get the power supply going. Edit: MAP, VAF, IAT, EGT, O2, wideband O2, abs sensors. Steering wheel clockspring for wiring up steering wheel buttons and airbags, can give a project at least 720* while maintaining continuity through a ribbon cable.
I love automotive sensors. The computer uses the pull up resistor in the control unit to detect if the sensor is hooked up correctly. Great practice to add code I'm at 5v the sensor is not hooked up.
Note: Not all crank sensors are Hall effect. Some output a high voltage AC signal. Don't just go hooking up a crank or cam sensor to your micro without knowing first.
The Hall effect CPS is a three terminal device which is easy to recognize. It is powered by the ECU at 5 volts. The AC variable reluctance CPS is a two terminal device and generates its own signal. The output is around +/- 8 volts depending on the speed of the motor. All that is needed is a resistor and a Zener diode to clamp the output pulses to 5 volts which can be fed onto the micro. fullfunctioneng.com/info/Hall%20vs%20VR.pdf
My VR sensor has three wires. Except if you hooked it up to a micro, you'd kill it with high voltage (up to 50 volts iirc, depends on the speed of what is passing by the sensor). I know this because I built my own ECU (Megasquirt II Extra). I HAD to know what kind of sensor my engine used.
How can I make a pressure (force) gauge with digital display, using a 10-500kg force sensor? Trying to use something like that to measure the wind force on the front of my drag car.
You could use a load cell available online from Banggod. You would have to come up with a calibration scheme to measure the range of force you are interested in.
I want to measure distance traveled by counting the revolutions of a rotating wheel using off the shelf ABS tune wheel and ABS sensor. Which combination of these two items should I shop for that are the easiest to be read by an Arduino? It is my understanding that there are different types of tune wheels/sensors.
Easiest solution is to use a missing tooth trigger wheel which is easy to sync with a hall effect sensor and Arduino. www.diyautotune.com/product/8-1-4-36-1-trigger-wheel-no-slots/
@@0033mer thanks for the reply. Is it correct to assume that any 3 wire automotive sensor wired according the diagram in your video will work with this trigger wheel? I should also note that I intend to use this sensor in harsh environments with possible water slush and dirt. What is the purpose of the missing tooth?
Car manufacturers spec their own sensors so they are not all the same. Missing tooth will give you a reference to something stationary and will also indicate full revolutions. May not be needed in your application.
Hi, My car sensor not working i have Toyota Aygo which sensor is similer like shaft sensor shown in starting of the video (yellow ring two wires) and not available in market. Can you please help me to find out the solution. can i use other alternative car sensor or use any transister/resister curcuit ?? Car speedo meter+ abis not working due to this. Your prompt response will be appreciated !!
If you say the temperature sensor has a platinum wire in it, to me that sounds like a type S thermocouple, which does not work with current. It generates a millivolt signal that is proportional to the DIFFERENCE between the temperature where the two wires meet ("hot junction"), and the point where the platinum wire ceases to be platinum ("cold junction")
The device is a Mass Air Flow sensor (MAF) which contains a platinum wire and a thermistor. For temperature detection the thermistor can be used standalone. For air flow detection current is fed to the platinum wire. As air flow cools the wire more current is needed to maintain temperature and air flow can be measured. www.oscium.com/sites/default/files/MAF_autoshop101.pdf
There are also VAF sensors and MAP sensors. VAF uses a pot type wiper to determine volume, the air drawn into the engine moves a plunger. And MAP (manifold absolute pressure,) which detects the pressure in the intake manifold (vacuum or pressure with a turbo.) For all 3 you probably want to know the temperature of the air, some have a built in IAT, like my VAF. When I swapped to a MAF I had to wire in an IAT. Getting rid of the plunger in the air path I gained about 12-15hp and fuel economy improved ecu had to be swapped the 2 types of measurement don't play nice, linearly. The newer ecu also could control it's own fuel map instead of following a predetermined spreadsheet. So light turboing would not require a fancy tune.
Parking assist backup sensor from Ford F150 part # 3F2Z-15K859BA Available from Ford or Amazon (cheaper) www.amazon.ca/Parking-Assist-Reverse-4F23-15K859-AA-3F2Z15K859BA/dp/B07W4C5V11
thank you for taking the time to explain the type of sensors. it was very informative. I will like to start a project where I will be able to read temperature, fuel, RPM's, and Speed on my 82 motorcycle and be able to transmitted to my phone via Bluetooth. any chance you can point me to right direction. thank you again.
Use the Arduino Nano to read all your sensors and send the data to a HC-06 Bluetooth module which will transmit the data wirelessly to your smartphone. A serial terminal program app running on your phone will display the sensor readings. There are lots of free BT serial terminal program online. You can also write your own app using App Inventor by MIT. This video will give you some ideas: th-cam.com/video/yXRWQpJrK6g/w-d-xo.html
I have a two pin cam position sensor. Induction type. How can i condition the signal and make it square for my arduino to read it? I can't find lot of stuff. But from what i know its not possible to get readings from it directly.
You can try my sensor interface circuit. It will detect very small signals and produce a 5 volt square wave output when powered by 5 volts. th-cam.com/video/wEqfHo_guG8/w-d-xo.html
I am completely new to fancy computer stuff. But I've been around cars my whole life. My question is, all these automotive sensors are 12v, would running them at 5v not change their calibrations? Say a water temp sensor runs 0-12 volts and that is calibrated for 60degf to 280degf range. If your only running 5v would it not either severely limit is range and or change its calibration??? I'm wanting to get into coding and Arduino/RbPi and attempt a single screen gauge cluster.
Back in the days of carbureted engines everything was 12 volts. When fuel injection came along a computer was used (ECU) which ran on 5 volts like Arduino. A lot of sensors like crank/cam position sensors and throttle bodies "drive by wire" run on 5 volts. You have to check the service manuals to determine the voltage used on various cars. Very new cars use CAN bus which is a 5 volt protocol. Check out these videos: th-cam.com/video/_-_XGLkKnCs/w-d-xo.html th-cam.com/video/h1aA5gfeU34/w-d-xo.html
Check out some Hall Effect pickups: th-cam.com/video/_-_XGLkKnCs/w-d-xo.html You can also get RPM readings from an ignition wire pickup. www.powerbox-americas.com/products/rpm-pickup?variant=29869017202760 When you hook up the desired pickup, check the output with a scope to make sure it is clean before you start coding.
Hi , i need help to interfacing this sensor with arduino i cant understand the signal wire connected to digital pin at arduino uno before that connected it with voltage divider by resistor 10 k ohm ? Or i connected it at analog pin ? Please help because this for my collage project
The best source is from an auto wrecking yard as the cost will be lower than new. If you repair your own car you probably have a good idea of what models to look for. If not, check online with sites like: www.rockauto.com Search under Electrical, Ignition ... etc
All auto sensors are 5v reference. I would dare say they are a bit more accurate than what most makers use. Well done!
Don't forget relays, and a robust atx power supply can run a car stereo and/or smaller audio sub amps. Green wire to black on the 20 pin connector should get the power supply going.
Edit:
MAP, VAF, IAT, EGT, O2, wideband O2, abs sensors.
Steering wheel clockspring for wiring up steering wheel buttons and airbags, can give a project at least 720* while maintaining continuity through a ribbon cable.
Nice, clear and informative. Well delivered. Thank you.
What a great idea. Thanks
Great info - never thought of auto sensors, so rugged!
Glad it was helpful!
I love automotive sensors. The computer uses the pull up resistor in the control unit to detect if the sensor is hooked up correctly. Great practice to add code I'm at 5v the sensor is not hooked up.
Note: Not all crank sensors are Hall effect. Some output a high voltage AC signal. Don't just go hooking up a crank or cam sensor to your micro without knowing first.
The Hall effect CPS is a three terminal device which is easy to recognize. It is powered by the ECU at 5 volts. The AC variable reluctance CPS is a two terminal device and generates its own signal. The output is around +/- 8 volts depending on the speed of the motor. All that is needed is a resistor and a Zener diode to clamp the output pulses to 5 volts which can be fed onto the micro.
fullfunctioneng.com/info/Hall%20vs%20VR.pdf
My VR sensor has three wires. Except if you hooked it up to a micro, you'd kill it with high voltage (up to 50 volts iirc, depends on the speed of what is passing by the sensor). I know this because I built my own ECU (Megasquirt II Extra). I HAD to know what kind of sensor my engine used.
Wow. Nice!
Very nice.
How can I make a pressure (force) gauge with digital display, using a 10-500kg force sensor? Trying to use something like that to measure the wind force on the front of my drag car.
You could use a load cell available online from Banggod. You would have to come up with a calibration scheme to measure the range of force you are interested in.
Just gave me an idea project for next spring : hall effect sensor and some microcontroller to compute speed/distance etc on my mountainbike..
You can use a Reed switch in the frame of your bike, and a magnet in the wheel. Just like most of digital speedometers
great idea
I want to measure distance traveled by counting the revolutions of a rotating wheel using off the shelf ABS tune wheel and ABS sensor. Which combination of these two items should I shop for that are the easiest to be read by an Arduino? It is my understanding that there are different types of tune wheels/sensors.
Easiest solution is to use a missing tooth trigger wheel which is easy to sync with a hall effect sensor and Arduino.
www.diyautotune.com/product/8-1-4-36-1-trigger-wheel-no-slots/
@@0033mer thanks for the reply. Is it correct to assume that any 3 wire automotive sensor wired according the diagram in your video will work with this trigger wheel? I should also note that I intend to use this sensor in harsh environments with possible water slush and dirt. What is the purpose of the missing tooth?
Car manufacturers spec their own sensors so they are not all the same. Missing tooth will give you a reference to something stationary and will also indicate full revolutions. May not be needed in your application.
Hi, My car sensor not working i have Toyota Aygo which sensor is similer like shaft sensor shown in starting of the video (yellow ring two wires) and not available in market. Can you please help me to find out the solution. can i use other alternative car sensor or use any transister/resister curcuit ?? Car speedo meter+ abis not working due to this. Your prompt response will be appreciated !!
Thanks
If you say the temperature sensor has a platinum wire in it, to me that sounds like a type S thermocouple, which does not work with current. It generates a millivolt signal that is proportional to the DIFFERENCE between the temperature where the two wires meet ("hot junction"), and the point where the platinum wire ceases to be platinum ("cold junction")
The device is a Mass Air Flow sensor (MAF) which contains a platinum wire and a thermistor. For temperature detection the thermistor can be used standalone. For air flow detection current is fed to the platinum wire. As air flow cools the wire more current is needed to maintain temperature and air flow can be measured.
www.oscium.com/sites/default/files/MAF_autoshop101.pdf
heated platinum wire sensor is actually used as mass airflow sensor
Could use it as an anemometer, but they're pretty sensitive to fouling and damage. Might have to do some calibration/testing.
There are also VAF sensors and MAP sensors. VAF uses a pot type wiper to determine volume, the air drawn into the engine moves a plunger. And MAP (manifold absolute pressure,) which detects the pressure in the intake manifold (vacuum or pressure with a turbo.) For all 3 you probably want to know the temperature of the air, some have a built in IAT, like my VAF. When I swapped to a MAF I had to wire in an IAT. Getting rid of the plunger in the air path I gained about 12-15hp and fuel economy improved ecu had to be swapped the 2 types of measurement don't play nice, linearly. The newer ecu also could control it's own fuel map instead of following a predetermined spreadsheet. So light turboing would not require a fancy tune.
Good video! I'm interested in finding an automotive ultrasonic distance sensor. Where can I find a catalog and specs? Thanx.
Parking assist backup sensor from Ford F150 part # 3F2Z-15K859BA
Available from Ford or Amazon (cheaper)
www.amazon.ca/Parking-Assist-Reverse-4F23-15K859-AA-3F2Z15K859BA/dp/B07W4C5V11
thank you for taking the time to explain the type of sensors. it was very informative. I will like to start a project where I will be able to read temperature, fuel, RPM's, and Speed on my 82 motorcycle and be able to transmitted to my phone via Bluetooth. any chance you can point me to right direction. thank you again.
Use the Arduino Nano to read all your sensors and send the data to a HC-06 Bluetooth module which will transmit the data wirelessly to your smartphone. A serial terminal program app running on your phone will display the sensor readings.
There are lots of free BT serial terminal program online. You can also write your own app using App Inventor by MIT.
This video will give you some ideas: th-cam.com/video/yXRWQpJrK6g/w-d-xo.html
greatly appreciated!
Check out my "Reading Sensors with Bluetooth" video:
th-cam.com/video/5scp2xpFa7c/w-d-xo.html
Alternately, you can use an Esp32. You'll have Bluetooth and wifi built in
I have a two pin cam position sensor. Induction type. How can i condition the signal and make it square for my arduino to read it? I can't find lot of stuff. But from what i know its not possible to get readings from it directly.
You can try my sensor interface circuit. It will detect very small signals and produce a 5 volt square wave output when powered by 5 volts. th-cam.com/video/wEqfHo_guG8/w-d-xo.html
@@0033mer Thank you very much for your response
This video is badly underrated
I am completely new to fancy computer stuff. But I've been around cars my whole life. My question is, all these automotive sensors are 12v, would running them at 5v not change their calibrations? Say a water temp sensor runs 0-12 volts and that is calibrated for 60degf to 280degf range. If your only running 5v would it not either severely limit is range and or change its calibration??? I'm wanting to get into coding and Arduino/RbPi and attempt a single screen gauge cluster.
Back in the days of carbureted engines everything was 12 volts. When fuel injection came along a computer was used (ECU) which ran on 5 volts like Arduino. A lot of sensors like crank/cam position sensors and throttle bodies "drive by wire" run on 5 volts. You have to check the service manuals to determine the voltage used on various cars. Very new cars use CAN bus which is a 5 volt protocol. Check out these videos:
th-cam.com/video/_-_XGLkKnCs/w-d-xo.html
th-cam.com/video/h1aA5gfeU34/w-d-xo.html
Hi, i need help interfacing a crankshaft position sensor with an arduino to get RPM for a college project, is there a better way i can contact you ?
Check out some Hall Effect pickups: th-cam.com/video/_-_XGLkKnCs/w-d-xo.html
You can also get RPM readings from an ignition wire pickup.
www.powerbox-americas.com/products/rpm-pickup?variant=29869017202760
When you hook up the desired pickup, check the output with a scope to make sure it is clean before you start coding.
Hi , i need help to interfacing this sensor with arduino i cant understand the signal wire connected to digital pin at arduino uno before that connected it with voltage divider by resistor 10 k ohm ? Or i connected it at analog pin ? Please help because this for my collage project
Connect the signal pin to one of the GPIO pins on the Nano. Experiment without a micro then connect the Nano.
th-cam.com/video/_-_XGLkKnCs/w-d-xo.html
shot, bro
Good vid. but no mention of cost, source - new - old/crashed cars etc.
The best source is from an auto wrecking yard as the cost will be lower than new.
If you repair your own car you probably have a good idea of what models to look for.
If not, check online with sites like: www.rockauto.com
Search under Electrical, Ignition ... etc
Great idea! they are even cheaper than some garbage sensors that are sold for hobbists