Realtime Clock Module – Bench Test

Along with the Engine Knock Module, I managed to test that this Realtime Clock Module was working as expected, i.e. that I could set the date/time, that it would not forget the date/time when the ECU was turned off and lastly it kept accurate time.

  1. I connected the ECU to my JimStim just to get power, and the USB cable to my computer which was running TunerStudio software;
  2. I then opened the Realtime Clock dialog which can be found under the CAN-Bus/Testmodes button. Make sure that the ‘Enable Real Time Clock drop-down is set to ‘On-board’;
  3. Next press the ‘Set MS3 Time to Now’ button… this will get the current date/time from your PC, so make sure it’s correct!
  4. Now press the ‘Burn’ button, close the dialog and power cycle your ECU.
  5. Reboot ECU and connect TunerStudio;
  6. Open the dialog again, you should have a date/time under the ‘Current MS3 Time’ caption.

Realtime Clock Dialog

Realtime Clock Dialog

Unfortunately I didn’t get a screen dump of the last step, but I did it 24 hours later and noted that the clock had gained around 2 seconds. The RTC dialog allows you to apply a trim to the clock.

That’s about it, I look forward to my logs now to have accurate and real time stamps.

Realtime Clock Module Installation

Finally got some time to add the realtime clock module to the MS3 PCB. Please follow the fitting instructions in the MSX3 v3.0 Hardware Manual.

I had no problem following the instructions, but here is a very brief pictorial of my installation.

MS3X Expansion board with showing pins that need headers soldered
MS3X Expansion board with showing pins that need headers soldering

Header pins are now soldered in
Header pins are now soldered in
Now solder top pins of header keeping board level and clear of other components
Now solder top pins of header keeping board level and clear of other components
I hot melt glued the end to the MS3X to stop vibrations
I hot melt glued the end to the MS3X to stop vibrations

I then inserted the battery, I used a CR1220 because that was all I could find locally.

I have not set the time on the board, I was also installing the Engine Knock Module and have not completely finished it. I’ll update both posts ASAP.

MS3X Realtime Clock Module & Ignition Knock Module

MS3X Realtime Clock Module & Ignition Knock Module

Today I received two add on modules for the MS3X board in my MS3 ECU from diyAutoTune.

MS3 Realtime Clock Module

This module board, adds a real time clock to give my MS3’s SD card logs a time/date stamp.

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MS3 Ignition Knock Module

This add on module gives:

  • two channels of knock input that the MS3 can use to retard spark
  • a programmable bandpass filter
  • levels that change with RPM
  • the ability to assign different cylinders to different sensors, and different gain levels for each cylinder

I understand the Mini A series engine is very noisy, but I hope to be able to differentiate between the engine noise and knock using this module. I have a Bosch knock sensor which I hope to fit to the front of the engine near the alternator mounting bolts near cylinder number two.

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I will fit these boards hopefully in the next few days.