Freematics Forum

Hi,
What are the pin used in MegaLogger, and pin i can use for other usage ??

Thanks !

Hi all,

two weeks ago I received my megaloggerHD-Kit. Great work!
Because I want to add some sensors for logging engine health and so on, I need to know which pins in megaloggerHD are used / free.
I'm NOT asking for a schematics or so, but knowing the free pins would be NICE, so I don't have to do it via "reverse engineering" to add the sensor features my poor ECU lacks! :-/ Stanley?

Many, many thanks in advance and
Greetz from Germany
Stevie

Hi Stevie. I have the non HD megalogger kit. From what I Can tell, the LCD uses up most/all of the digital IO pins but I don't see anything used on the analog IO pins. I think you're trying to do the same thing I am. I'm building a datalogger for a race car that I have.

I've decided to use the I2C connector for the OBD2 plug and split it to a second arduino uno and to let that arduino do all the external IO. That way, you don't have to stack a proto board on the screen and make everything thicker.

This way?
Pin 22 DB8
Pin 23 DB9
Pin 24 DB10
Pin 25 DB11
Pin 26 DB12
Pin 27 DB13
Pin 28 DB14
Pin 29 DB15
Pin 30 DB7
Pin 31 DB6
Pin 32 DB5
Pin 33 DB4
Pin 34 DB3
Pin 35 DB2
Pin 36 DB1
Pin 37 DB0
Pin 38 RS
Pin 39 WR
Pin 40 CS
Pin 41 RST
Pin 42 Free for user
Pin 43 Free for user
Pin 44 PWM
Pin 45 Flash_CS
Pin 46 Free for user
Pin 47 Flash CS
Pin 48 Free for user
Pin 49 Free for user
Pin 50 MISO
Pin 51 MOSI
Pin 52 CLK
Pin 53 SD_CS