- Wed May 08, 2019 2:10 pm
#34525
Thought i would put this up here for anyone interested, also if there is anything i could have done better or other features i don't know about keen to find out!!
The speeduino does not use all the analog inputs on the Arduino. On the MX5 PNP A8 is extra handy as it is already connected to the clamping protection IC:
I want to add a coolant pressure sensor to log in my car. Have purchased a few of these sensors:
https://www.ebay.com/itm/Pressure-trans ... SwxBdZgiGA
3 wire sensor - so needs a 5V supply and has the following transfer curve:
So a small mod to the PCB to get 5V - a series 2.2k resistor for the signal and ground. I added a new connector at the back, just prefer not to try and stuff new lines into the OEM connectors.
Then in tuner studio "Accessories" -> "Local Auxillary Input Channel Configuration" set the source appropriately:
Then in "Tools" -> "Custom Channel Editor" add details for the sensor:
Then add a datalog variable:
And voila - you now have a sensor input you can log with correct scale and units!!!
Testing the sensor on a fixture:
So good!!!
The speeduino does not use all the analog inputs on the Arduino. On the MX5 PNP A8 is extra handy as it is already connected to the clamping protection IC:
I want to add a coolant pressure sensor to log in my car. Have purchased a few of these sensors:
https://www.ebay.com/itm/Pressure-trans ... SwxBdZgiGA
3 wire sensor - so needs a 5V supply and has the following transfer curve:
So a small mod to the PCB to get 5V - a series 2.2k resistor for the signal and ground. I added a new connector at the back, just prefer not to try and stuff new lines into the OEM connectors.
Then in tuner studio "Accessories" -> "Local Auxillary Input Channel Configuration" set the source appropriately:
Then in "Tools" -> "Custom Channel Editor" add details for the sensor:
Then add a datalog variable:
And voila - you now have a sensor input you can log with correct scale and units!!!
Testing the sensor on a fixture:
So good!!!