Megasquirt Support Forum (MSEXTRA)

Hello everyone,
I was trying to find info about connecting DIYPNP to Arduino with CAN-BUS shield. I was trying to find pins for CANH & CANL on DIYPNP.


1. How to connect those together?
2. Can they connecto over DB9 connectors(DIYPNP and CAN-BUS shield)?

the CANH & CANL on DIYPNP are found on the 18 pin center header you should be able to jumper those to un used pins on the loom side and then connect these to your shield. the db9 on the ecu is rs232 serial so dont connect that to you can shield bad things may happen.

what about pins 10 & 12.

pin 18 is Flex.

thats the pinout for the microsquirt module. you want the 18pin connector on the main board.

I know Im stupid can you pls post a pic of the board and the pin.
I am looking at the board and don't see pin 18

arrow shows where you pick the canh and canl signals up, then its up to you where you jumper them to.

found them thanks a lot.
can I jumper them to DB15 connector?
I have read in manual that need 120ohm resistors, do I need them here?

you can run wires and jumper them to any spare pins you like. the 120 ohm terminator resistor will more than likely be on you can shield

thanks a lot

what you making any how?

I want to connect my MS to arduino with LCD and display some data on it.
I have rs232 bluetooth but for some reason it stoped working.

I get error that some file cannot be found on the server, something like that.

if you connect the arduino by can-bus you can have a display and still have the computer connected by rs232 at the same time.

thats true
I have already bought all electronics need for LCD dash
20x4 character LCD display

If its possible I wont open new thread for similar question.
I have wired CANH & CANL from board to DB15 connector and DB15 connector to CAN BUS Shield.
But dont know how to get it to work?
What do I have to setup to get it to work?

wewerica wrote:If its possible I wont open new thread for similar question.
I have wired CANH & CANL from board to DB15 connector and DB15 connector to CAN BUS Shield.
But dont know how to get it to work?
What do I have to setup to get it to work?

what ecu? what arduino and can-bus setup are you using?

grom_e30 wrote:

wewerica wrote:If its possible I wont open new thread for similar question.
I have wired CANH & CANL from board to DB15 connector and DB15 connector to CAN BUS Shield.
But dont know how to get it to work?
What do I have to setup to get it to work?

what ecu? what arduino and can-bus setup are you using?

Im using DIYPNP 1.5b with 3.4.2 firmware
Arduino UNO with elecfreaks canbus shield - http://www.elecfreaks.com/estore/can-bus-shield.html

ah ok that shield does work i'm using the same one, did you turn on 'real time data broadcasting' in the can bus settings so the ecu is sending out the data via can-bus?

have you got the arduino lib set up and a sketch to read the data?

Yes I did, I have uploaded receive_check sketch but nothing happens
Can you share some code/sketch with me?
pm/email