JhonnyD

This https://a.co/d/11nOFnw timer relay can solve subwoofer thump. Attaching illustration on how to wire relay as well as video of end result. Providing link on how to program timer relay too:

Video demonstrating the delay:

https://drive.google.com/file/d/1GmbTcBGQ7fkknkT4K7ybJQFY1eo7DKSx/view?usp=drivesdk

You will use P-4 mode for the delay. You will set the OP in mode P - 4 to seven seconds or more if you’d like. You will see how to program the P - 4 mode in the instructions link I provided. Also, the remote turn on to the amp I changed to the ignition wire in the factory radio harness. This needed to be done to shut sub amp off first and then have a delay for the radio. Make sure you fuse all in and out power supplies on the relay with wired fuse holders holding…3 amp fuses are sufficient and will break quick if you run into a problem. I’m providing this info to help people, but install at your own risk. I know it definitely works as you’ll see in the video link.

A couple of things to note. 1st On the timer relay where it says “ 12V ignition coming from Car” you’ll twist in the remote lead for the amplifier together with the ignition source then connect to the timer relay. 2nd, on cars that the canbus decoder box provides the ignition this is where you’ll cut that wire that’s coming from the box in the middle so there will be an output(going to the “12V ignition coming from car” going to relay), and then the output from the timer relay labeled “to ignition of radio,” will connect to the other half of wire that was cut in the middle.

I tried to be as descriptive as possible, so hopefully there won’t be any unanswered questions.

Programming instructions:

Instruction :

Operating mode:
P1 mode: after triggering the signal, the relay conducts OP time and then disconnects; in OP time, the operation will be as follows:
P1.1: the relay is invalid when the signal is re-triggered.
P1.2: the relay starts to work again when the signal is re-triggered again.
P1.3: the relay is disconnected, and the timer is stopped when the signal is triggered once again.
P1.4: in OP countdown time, start on boot without triggering;
P-2.1: when the CL time of the triggering signal and the relay is disconnected, the relay conducts to the OP time. When the timekeeping is done, the relay should be disconnected.
P2.2: P2 function distinction: the timing is triggered again.
P3.1: after the triggering signal and the relay conduct to the OP time, the relay disconnects the CL time, and then the above operation is recycled, the signal is provided to the relay again; when the relay is disconnected, the timing stops and the recycling time (LOP) can be set;
P3.2: after the power is connected, the signal needs no triggering, the relay will conduct to the OP time while disconnects the CL time, recycle the operation mentioned above; also the recycling times (LOP)can be set;
P-4: the signal-keeping function: if the signal is triggered, signal, the timing will be reset to clear and the relay is still conducted; when the signal disappears and the timing of OP is done, the relay will be disconnected; during the timing period, the timing will be reset to clear if there is a new signal.

Long press the “down key” of the timing interface and switch to reversal output state (switch state is opposite).

In p3.2 mode, long press the “up” key in the timing interface, displaying “F1” means the OP time operates first, while “F2” the CL time first.

How to set the parameters :

First, determine the working mode of the relay.
According to the working mode of the relay, long press the “SET” key for2 seconds in the main interface( when the module is on, it will flicker the current working mode---the default P1.1 mode, and turn to the main interface), turning to the mode-selection interface, then choose the mode you want by short press the “UP” and “DOWN” keys(P1.1_P-4).
After selecting the mode you want, short press the “SET” key to set the corresponding parameters, the parameters to be set will flicker, adjust the parameter value by long or short press the “UP” and “DOWN” keys (long press means increase or decrease in a fast speed, short press means increase or decrease 1 unit). After setting the parameter value, select the position of the decimal point by short pressing the “STOP” key and select the time range (the corresponding time is 0.1 seconds ₉₉₉ minutes); short press SET key, set the next parameter of the current mode, the process is the same as what mentioned above.
After setting the parameters of the selected mode, long press the “SET” key for 2 seconds, the current set pattern will flicker, then return to the main interface, the parameters is settled. Main interface: it displays "000"when the relay is not working and “0.0.0.” when it is working. Mode selection interface: you enter this mode by long pressing the “SET” key, and return to the main interface by long pressing the “SET” key again when the mode is settled.

WoOOOhOOO They specifically requested apps we want working in this thread and I answered. They haven't responded to my post.

You can always use the "universal option".
I also have a specific app which I like to be supported, but by now there are literally hundreds and hundreds of app requests for the widget, where some do not behave as real media-players, so they can't be supported. I think DuDu shot themselves in the foot. They never anticipated so many requests.
The universal option works fine for my app. As I hardly use my car the last 6-8 months, it "often" does a cold reboot which means that the connection is lost with my app.
I have to start my media app, start "something" playing, and go back to the home screen.
Is that user-friendly? Not as user-friendly as is possible.
Is it a show stopper? Not at all. It takes me 10 seconds and then "it is there" for the next 15 minutes or 2½ hours, depending on the drive. No problem at all for me.
It has nothing to do with creating a closed eco system, like Apple does. It is simply the shear overwhelming number of requests.
And personally I really appreciate that they now focus on stabilizing the system, instead of building more and more buggy and unstable features, like they did earlier.

MihaiFlorin

"No support" is not the same thing as disallowing it from working. If the real youtube music works, I don't see why revanced shouldn't.

As a point of fact, Dudu auto is probably modifying google apps themselves to make them work as widgets, exactly what revanced does to modify google apps to work in the way we want rather than how google wants. That would be why google play protect flags some of their apps (number 15 in the FAQ).

If I'm incorrect about this then let me know.

So before we get on a high horse and think it's a bridge too far to expect unauthorized apps to work, we should maybe think about which is worse: using modified apps, or making money from a product that is sold that relies on modified apps.

If you sell a product that relies on unauthorized apps to work, you should not really be surprised when you attract customers that want unauthorized apps to work.

Personally, I want modified apps to work and I don't think it's that much of a support burden simply to not disallow them from working. It's probably a single entry in a whitelist of app signatures.

Hopefully they can quietly make it work, or simply not make it not work, without "providing support". Youtube revanced works in standard android with no support needed.

Once again, if I'm wrong about any of this then let me know.

edit: I hope I don't sound ungrateful, it is genuinely amazing to have a head unit that has full Android and the dedicated hardware in the dudu7. Also I don't even use the widgets because I'd rather the full interface of the app.

But saying they can't make revanced work without facing legal issues seems pretty weird with the fact they're manufactured in China and come with preinstalled modified apps.

Skillzo1 The good part is it is constantly evolving to be better and we are not locked into a final version until support stops for that device.

I'm far from convinced that we're always going forward. I see a lot of sideways or even backwards steps for technology in general.

For example my phone had a great feature where when the alarms went off in the morning I could just say "snooze" and it would snooze the alarm. Then a software "update" came. No more voice command for that, and it's back to hunting for the insanely tiny snooze button. I really doubt the people who make the main decisions at most companies are actually using the devices they sell.

My "hey google" used to be able to call contacts when the phone was locked. Then I (somehow? I didn't ask for it) got the "update" to Gemini and now when I try it makes me physically unlock the phone. Also most of the calls I make are to my partner and I have to specifically say, "call XX on her mobile" every time, or else it asks me which one to call on every time and there's no way to set a default. AI will solve all our problems, my ass.

Maybe there's a way to solve both of those issues with workarounds or hunting for magic settings, but who can keep up with this shit? It's endless whack-a-mole all day every day with constant beta garbage being shoveled onto consumers.

I like things that work and I like functionality over form. Stability is a feature and I hate it when things change because 90% of the time it's for the worse or just different for the sake of being different. Perhaps I'm in the minority.

But having said that, I got the dudu7 a few days ago and so far I'm happy with it, with some reservations.

There's a few bugs, overlooked features, and downright weird stuff, some of it really surprising (like no lockscreen (WTF!), the confusing audio settings/eq screens, also the inability to delete SWC assignment for volume), but overall I can't actually think of another headunit that I'd rather have. Especially the locked-down, dated and limited kenwood/sony/etc overpriced crap that I used to have.

It's a pretty sad state of affairs really because with the number of cars out there and the amount of potential money there is on offer for the company that fully solves the problem, you'd think putting a tablet in a car that works completely smoothly would be something we as a species should have already done.

I hope duduaudio keeps improving their software and not taking too many sideways or backwards steps. My unit came with 3.6, and the settings of 3.6 seem like a sideways or backwards step from what I've seen of 3.5. I prefer a simple hierarchical menu structure and also find it difficult to find settings that I'm looking for, even when I know what I'm looking for and seen it before, because the category choices seem quite arbitrary.

I agree 100% that a search function for settings would solve a lot of that problem.

But I do agree with @Mikescotland that there are way too many posts in this forum that go completely unanswered.

ba4ek how is it a solution by turning off spdif or not using external amplifier? Or reducing power of the whole system?
Majority of high end users have external amplifiers to have 3-4 way active systems plus a huge subwoofer amp.
That would be a solution but possibly only for low power amps like you have in your dsp, to reduce max output of the dsp by 3 or 6dB and bump the amp gains but as dsp is digital, anything lower than 0dB will decrease dynamic range of the dsp processing (that's how the digital audio works, unfortunately).
I have 2x60W for tweeters, 2x100W for midrange, 2x300W for midbase and 1x500W for subwoofer and even doing the trick with your "solution" volume bumps to quite high on 2-3 scale. That would not happen with normal, industry standard (in fact you have such volume control, logarithmic in your helix DSP) logarithmic volume control.
And, to be honest your helix power amps aren't strong, majority of high end audio users have amps over 200-300W and we would not like to lower the power because of skewed implementation of volume cobtil in Dudu unit (quite a few people complain about lack of granular volume control at low levels here).

rtoxic that is correct.
But, let's say you have a 100W amplifier and you want to have this output. Decreasing level by -3dB will cripple your amp to around 75W with max volume from dudu. Decreasing by - 6dB will halve the power to 50W. I have set - 6dB in my DSP for more comfortable listening at 1-5 of dudu volume control which means that now, turning Dudu to max volume I have half of the maximum output of my amplifier. So, having subwoofer with 1kWh power RMS, now I have 500W at max volume. Which is completely undesirable and frankly I can't understand why Dudu has linear volume control.
Logarithmic volume is the way for any audio device, there is a reason why all high end headunits have it. Volume gets gently amplified in lower volume levels and then quickly at the end of the scale. Then noone doesn't need to set their amps or dsp with - 3dB or - 6dB and still have full amp power at max volume.
This just doesn't make sense in Dudu.
Decreasing sensitivity of the dsp and increasing sensitivity of the amp doesn't make any sense, at the end you still have same volume level and same aggressive bump in lower part of the Dudu volume adjustment.
As Dudu7 is aimed at high end systems, they need to take into consideration that people have quite high end amps, calibrated to max power without clipping, same with dsp and linear volume control isn't the way to do volume adjustment. Again, linear or logarithmic, they still have full max volume the same, the detail is just in the first steps of the volume adjustment, logarithmic is exactly as we hear volume.
Sure, I can attenuate even more on my dsp to get comfortable volume in a quiet environment. But then I won't be able to get max from my amp. That solution is completely wrong for SPL systems or finely tuned ones (I've got 10 channels in the car on separate amps, and I want them to get full power at max volume, not half of their power because I had to attenuate dsp by 6dB because on 2 scale on DUDU it's too loud).
Or, at least give us option, or make volume adjustment more granular, like 0-100.
But again, there is a very good reason why all audio devices don't use linear volume control.
By the way, attenuation on dsp decreases also dynamic range of the signal.

Most users get into their cars and connect their phones and android all-in-one devices via Bluetooth.

The Bluetooth phone app on the Android all-in-one device that the phone is connected to does not allow
you to select a ringtone oradjust the ringtone volume, which is very inconvenient.

Please add the things mentioned above to the Bluetooth Phone app in the next update.

dudu1897 stop being a clone of an apple fan boy.
I do appreciate what you're saying. And I do appreciate the hardware and approach to software. However, it's much more expensive than comparable android tablet and requires a lot of work for making it work properly.
For asking price of Dudu 7 I'd expect plug and play software wise, but I'm getting almost a beta software with bugs that sometimes impact basic functionality.
Very simple, Dudu os 3.6 should not been released until bugs were ironed out.
Pretty much all the functions (except fm radio and calls) I had on my carputer made from nexus 7 2013, including android auto, usb DAC, and reverse camera for fraction of the price.
Paying the amount of almost 10 nexuses, I thought I'd get a nice all in one package, plug it and enjoy.
But, since I have it almost two weeks now, it's constant troubleshooting. Now carlink is starting with no reason, no option changes this behaviour.
I stopped reporting bugs because I don't have time to do it. Today, another bug, Dudu decided to change the region already twice from Europe to North America.
So, idea of it, and if the product is finished some day, then yes, it's worth the price. For now, it is not.
Forgot to mention. Screen is also too bright in the night. Of course you can "dim" it more by that grey overlay. But then from driver side looks horrible with a pink tint. Should I keep going? Navbar that is to be operated with a magnifying glass, no possibility of making font bigger, and for drivers from the UK, Australia, Japan, UI that can't be fully configured to be comfortable to operate.
Would I buy it again? No. Not in the state of software now.