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-- I NEED HELP PLEASE (updated 13 november 2006) using information from Hans (thanks again), I was able to get power to the atmel. * I can measure 4,5V between pin 1 and 2 of the atmel processor * voltage regulator is heating. Looks like board is powered now. BUT, I'm not yet able to communicate with the processor using serial cable. What I know: * As I own a v3.1, it looks like I can't use EC18-pin14, 15, 26. So I did as written in this guide: http://vems.hu/www.vems.co.uk/VEMS/ConnectingToSerial.html * My cable works, I measured resistance between DSUB9 and board socket Do you have any idea about what is missing? Do I have to solder more components? Thanks for help Nicolas ------------------------------------------------- old stuff since here (solved problems) ------------------------------------------------- *I'm sure I'm using the right pin for the RS232 *I don't get any signal in megatune *as I can see ATM128 is not powered, at least I don't have 3,3V between pin 1 and 2 (in fact, there is no voltage) Here is how pin are connected now: * to battery - ** EC36-pin5 ** EC36-pin21 ** EC36-pin26 ** EC36-pin32 * connected to battery + ** EC36-pin25 I'm not sure I have the good pin layout as I'm using the v3.1 board. Could someone confirm that? (especially for the EC36, as I don't have any power on the atmel processor). '''I would really appreciate to know if I'm right with the battery + connected to EC36-pin25.''' As I can see, this pin doesn't go further on the board. I mean, there is no track from where I soldered the cable. -'''Yes''', battery + (12V) should be connected to EC36-pin25, but see also the following link to see how to mount the power on board..//Hans// .. http://vems.hu/www.vems.co.uk/VEMS/ConnectingPower.html '''Thanks''' a lot, I'll try this. Bus as I can see on the picture on the page from phattransmission, my board has not the same components. Of the inductor between 1 and 2 and the fuse link between A and B are missing, but other components are not on my board. Do I have more components than the 2 to solder? (I'm not talking about coil/injector drivers) The inductor from Rescue kit1 marked 1R5 must be soldered Between A&B, and just a wire (short) betwen 1 and 2 if a fuse is mounted external. The inline diode and the voltageregulator (top-left corner of first pic) should bee mounted when you got the board. I think that is it, hope it helps. //Hans// ---------------------------------------------------------- Battery is ok My com port are working fine - tested with dos: http://www.uktsupport.co.uk/reference/debug.htm My serial cable is ok What should I test next? I'm afraid I made a mistake... -- Presentation I've just started ooking seriously at Vems for my next engin/projet: a 63 beetle with porsche 915 tranny and type 4 supercharged engin - my next daily. Pictures of my cars on this website (sorry, everything is in french) http://www.bambulan.com - take a quick look at the gallery
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