I am looking for a little advice or direction .. I have a project i am working on that will require 4 or 5 hall effect sensors to be used;-
The basic of the project is i am renovating a classic car that has no OBD2 or CAN bus as it was manufactured in the early 80's
I would like to collect data on engine RPM and Wheel RPM at the same time to give me accurate feedback. I would also like to count wheel rotation for each of the 4 wheels to detect puncture.
I have trawled the internet and forums looking for a solution
Can data be collected by more than 1 Hall effect sensor at a time?
I have also looked on the PI forums as i thought this may be a solution but again this appears to have either never been attemped or everyone drives cars that have some form of data logging already fitted by manufacturer
I would use Hall effect switches like the A3144 Hall Effect switch. They are open collector output so connect the A3144 output to an Arduino digital pin set to INPUT_PULLUP and A3144 ground to Arduino ground. The input will read LOW in a magnetic field and HIGH when there is no field.
I think i should be ok with most of those points and the timings
The real issue seems to be how to connect more than 1 Hall sensor to the arduino an separate the data being received from them.
I dont seem to be able to find any information on anyone connecting more than 1 (3pin) hall effect sensor to an arduino or PI.
I have 5 KY-003 and 5 KY-035 hall sensors I just cant find anyone that has connected more than 1 to an arduino
I wil view the tutorial you suggest and see if that points me in the right direction ,, Thank you
I purchased a Mega 2650 Starter Kit as i had seen some really good reviews on the forums about them and thought if i am chucking a bucket load of money at the car to restore it the cost of the arduino was small fish .... The original plan was to collect the data with the arduino and pass it to the Raspberry Pi to display on a screen ...A bit like AutoPi ... But without OBD or any kind of CAN bus i am sort of flying by the seat of my pants
The KY003 has a A3144 on the little board and so is a digital (switch) output. The KY035 is analog and less suited for counting wheel revs. The KY003 is described on this page and there is code to interface one. It is not much different from using multiple switches. There should be lots on the net about that.