Very quick one.

I've built the "scoobymonitor".

I thought I would connect up a 12V battery to the power and earth connectors , just to see whether I got anything on the LCD , (before I go connecting it to my precious scoob ECU ... , just to make sure it looks healthy).

The thing powers up , and flashes a quick stripe of black LCD "Bocks" aross the bottom row,.. then puts a few blocks in the top row , and doesn't do anything else.

Anyone know whether it has to actually correctly start talking with ECU before it shows anything intelligible ?

Cheers - Mark

 

It won't do anything unless it's connected to an ECU, what it is actually doing is continually resetting itslef trying to sync with the Select Monitor port.

There is a test program on the website, if you program the chip with that then you can check that the PCB is built correctly and that the LCD and switches are working.

Andrew...

 

Andrew , thanks very much ..

I guess to do that , I will need to

1) build the programming interface connection (obviosuly) ..so far have not done this , as you kindly programmed the chip prior to sending to me.

2) Download the relevant fiel onto the chip itself. (What software do I use to do that ? is it Bascom AVR ?)

Many thanks once again - Mark