Auto on DWW-700H and another question

NickFury · 12-31-2005, 08:53 PM

Wondering if anyone on here has got their 700H to power on when it gets power? I'd like to be able to turn the car on and my screen comes on like you lilli and xenarc guys

Also, a little off topic, but is the brightness and contrast working for you guys in OSD on your 700H?

hatton920 · 01-07-2006, 07:26 AM

I too would like auto on for the 700H

vdog · 02-03-2006, 11:21 AM

Quote: Originally Posted by NickFury

Wondering if anyone on here has got their 700H to power on when it gets power? I'd like to be able to turn the car on and my screen comes on like you lilli and xenarc guys

Also, a little off topic, but is the brightness and contrast working for you guys in OSD on your 700H?

I'd like to get mine to turn on automatically too.

My brightness/contrast is not working for VGA but does work for other input sources.

I find that night driving is too bright even with gamma dimmed!

HoSS · 02-03-2006, 11:42 AM

Seeing as nobody seems to know about a software 'auto on', I will open my baby up & find a electronic method.
Will post instructions shortly.

randomjohn · 02-03-2006, 12:04 PM

Or even get the "warm up" period down below the 5 seconds or so it takes now from pushing the button to seeing the picture.

vdog · 02-03-2006, 04:21 PM

Thank you hoss! I'm going to start a thread on the VGA brightness/contrast problem.

HoSS · 02-03-2006, 04:57 PM

Quote: Originally Posted by vdog

Thank you hoss! I'm going to start a thread on the VGA brightness/contrast problem.

Hold on thanking me, the news is not good.
I took it appart earlier. The way the front buttons are read by the micro, is via resistance. So there is not a unique input which can have a capacitor circuit applied.
Its not impossible, but its not simple either. Especially as it is very hard to operate the unit dismantled for testing.

Are we sure there is no programming code method like the liliputs?

CT_Driver · 03-02-2006, 01:54 PM

So no updates? I'm guessing this is a case of no news is bad news? Any close up pictures of the switch so we can see what it looks like (I am too lazy to pull my dash apart to take the screen out and more importantly too scared to rip the screen open to explore).

Wiredwrx · 03-02-2006, 03:17 PM

Quote: Originally Posted by HoSS

Hold on thanking me, the news is not good.
I took it appart earlier. The way the front buttons are read by the micro, is via resistance. So there is not a unique input which can have a capacitor circuit applied.
Its not impossible, but its not simple either. Especially as it is very hard to operate the unit dismantled for testing.

Are we sure there is no programming code method like the liliputs?

Is there any reason why you can't use a small relay with a resister of the proper amount in the circuit.

Michael

buurin · 03-02-2006, 07:35 PM

While we're on the topic of physically modding the 700H how about a power indicator...

Am I the only idiot who forgets whether he hit the power button or not?! The 5 second boot up delay of the LCD does not help with my stupidity.

Would it have killed em to put a 2 cent LED on the device

CT_Driver · 03-02-2006, 09:12 PM

Quote: Originally Posted by buurin

While we're on the topic of physically modding the 700H how about a power indicator...

Am I the only idiot who forgets whether he hit the power button or not?! The 5 second boot up delay of the LCD does not help with my stupidity.

Would it have killed em to put a 2 cent LED on the device

Yeah, that would be nice, especially considering the problem I have been having recently.

Sometimes, when I turn it on, it doesn't actually turn on. Nothing happens. I wait quite a while to no avail. Each time I think it is dead, but then a while later/another trip, it turns on without a problem like nothing happened. I suspect it has to do with extreme cold, but I'm not sure.

buurin · 03-03-2006, 06:14 PM

I am in Seattle and it doesnt get cold here (by New England standard at least, where I am originally from) however one night it probably got in the low 20s... My screen did not turn on for a good 15 minutes even with the heat going full blast.

At first, before the heat was even on, it flickered white when I hit the on button then went black.

Then after it started warming up it wouldnt even flicker.

Finally after it was almost too hot for me to even bear in my car, it turned on fine. No problems since.

I was talking to some guys in the Automotive group and they said in other countries where it is consistently cold they go with headless setups where the only output is voice. They did tell me that there are LCDs made with large temp. ranges but they are very expensive.

NickFury · 03-03-2006, 09:06 PM

Quote: Originally Posted by CT_Driver

Yeah, that would be nice, especially considering the problem I have been having recently.

Sometimes, when I turn it on, it doesn't actually turn on. Nothing happens. I wait quite a while to no avail. Each time I think it is dead, but then a while later/another trip, it turns on without a problem like nothing happened. I suspect it has to do with extreme cold, but I'm not sure.

I was having that problem alot too. What I ended up donig was disconnecting it from the cars 12'v, and running it off my inverter. I took an old 12v ac power adaptor and cut the end off, and wired it up to the 700H, its much more consistant now it is running off the inverter, ghetto I know, but its function over form right now. If you don't have an inverter, you can try running off your power supply.

Even still though, every once in a while it will not turn on when I press the power button. Usually its after thease crazy temp. fluctuations we've been having up here lately, you know, 65 one day, 3 the next. Usually what I end up doing, is unplugging the screen from the inverter, power cycleing the inverter, and plugging everything back it and it works. But honestly, I cant not give you a scientific reason as to why it does this. I just thing the screen has a pretty crappy backlight and very crappy software.

As far as auto powering on, I have not seen anything in the software that will allow this. I guess the best we can hope for is maybe hacking the main power button its self. When it gets warmer here, like above 35, I'll rip the screen out of the car and try and rig something up if noone else has.

I would love to get this working.

BTW, is anyone eleses Brightness and Contrast able to be adjusted in the OSD? Mine can't