Windows Service that raises DTR on powerup

**xuri** · 12-14-2006, 07:48 AM

da_teach, i'm doing a system for my Cabriolet and i need your sourcecode, because i'm doing an interface for activate when i would. It's possible that you give me your sourcecode?

Thanks

**HitmanZ** · 12-14-2006, 01:01 PM

Originally Posted by xuri

da_teach, i'm doing a system for my Cabriolet and i need your sourcecode, because i'm doing an interface for activate when i would. It's possible that you give me your sourcecode?

Thanks

Da_teach hasn't been on for the longest time, i doubt you could find him

**fuguaa** · 12-14-2006, 08:30 PM

Alright guys im feeling a little dumb here but today i tried installing this service and i could not get it to work. I run the InstallUtil.exe and it opens up for about 2 secs then closes before i can enter anything. I know im probably going about this all wrong so if someone could clear this up for me id appreciate it tia.

**xuri** · 12-15-2006, 02:55 AM

actually i start and stop the service.

Fuguaa it's because you have not configured the config file. Try tu change the com port

**Thann** · 12-15-2006, 03:18 PM

Originally Posted by mbkowns

I can say I hooked up the serial cable right up to the amp remote line and it works. I have changed it though and I have it now so it goes through a relay. That if the the Accessory is on then it jumps the relay to enable DTR from the serial port to go to the amps but if the accessory is off it cuts that.

DTR will ditch the startup speaker pop by itself but I was also having a turn off speaker pop so that fixed that and its perfect now.

mbk - this is exactly what I need to do for my system. I was already using a relay because I need to turn on two amps at startup. What are the specs on the relay you're using (such as amperages, etc.)?

**Mañana** · 01-28-2007, 08:59 AM

To all that didnt get this to work, make sure you dont have any "spaces" in your filepath (ie, dont place it on the desktop as it is in c:\documents and settings\...).

I moved it to c:\ampctrl and suddenly, it worked... (You must reinstall the program at the new location afaik)

**keygen** · 02-16-2007, 08:15 PM

hi what is DTR?

**Rob Withey** · 02-17-2007, 05:50 AM

Originally Posted by keygen

hi what is DTR?

http://en.wikipedia.org/wiki/RS232

**crooper** · 04-05-2007, 04:11 PM

I know this is an old thread, but I'm trying to get it to work so I don't have to listen to my hard drive spool up.

The ampctrl service works great, DTR voltage swings -11.2v to +11.2v from off to on, and the signal will switch on ONE of my 3 amps. I have an automotive relay switching +12v to my amp REM inputs -- works great but DTR can't power it. I tried an 800 mA NPN transistor to switch the relay but it doesn't work. I measured the resistance across the emitter/collector as well as the output voltage with the service on and off and they don't change.

Does anybody have this kind of setup (with the transistor) or just a good explanation sans electronics skematics? I'm not an EE, they make no sense to me.