yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] marioti:
Correct me if I am wrong. You want to connect an 80 ohm resistor with the fan. If I calculated correctly, you reduce the power from 12v to 8.4V (the V1 model is 0.060mA). I ask because in my country I can't buy a Sunon fan model V3 (which I want) that has 5000rmp instead of 7500 like the V2 version. So I'll buy the available for me V2 version and reduce the voltage like you will do. But i'am curious is there a way to calculate how many rpm will have it, depending on the voltage.
[Android Head-Units] Aaantonn:
I have a Sunon MF35101V1-1000U-A99 fan, I also did not find V 2, V 3. This fan is too fast and whistles at full speed. The value of 12v.-0.72w is written on the fan. We count how many amperes I =P /U ( 0,72/12=0,06А) Now we know that it is 0.06 amps and we can calculate the resistance. R=U/I (12/0.06=200 Ohm) R=200 Ohm. Since the fans have good bearings, I think the resistance during rotation is minimal, so I just divided 200 by 2. A 100 Ohm resistor comes out. I have a 22 ohm resistor in front of the board and an 82 ohm resistor behind it in front of the fan. That is, in general, it turned out 104 ohms. The resistor should be 0.5 watt or more.

If you put 1 resistor, then the nearest resistor is 100 ohm 0.5 watt or 110 ohm 0.5 watt.

In general, I checked it works, the fan feels twice as slow. I'm not an electrician, but I did my best))

If you have a V2 fan, then I think you need a 62-68 ohm resistor and 0.5 watt

Do not be afraid to take more, because when the car is running, you do not have 12v, but at least 13.5v.
[Android Head-Units] marioti:
well, it goes like this. according to fan data sheet (which is attached some page before) V2 have 0,035A. So, R=U/I - 12v/0,035 = 342,86 ohm. Let say we want to decrease voltage to 8V, so 8/342,86 = 0,0233ohm. Then we know the voltage difference is 12 - 8 = 4V, so we need to use resistor as 4/0,0233 = 171,67ohm (But the nearest type which you can buy is 169ohm or 180ohm). Now about the power of resistor P=u * I, so 4V x 0,0233ohm = 0,09W. So it can be 1/8W= 0,125W, or 1/4 = 0,25W
[Android Head-Units] Firestormxtreme:
Hi does anyone know how to access the 360 panorama app, apparently the unit has it but I can’t figure out how to access it.

Also I am unable to get the front video app to work as the unit does not detect the usb webcam.
[Android Head-Units] marioti:
do you have those 4 chinese cameras installed, Without this, 360 view won't be shown
[Android Head-Units] Firestormxtreme:
Yes I have the 4 cameras plugged in but nothing shows up
[Android Head-Units] Clyde72:
The link is the default landing page for that board. You can select a 2 wire version, I allready received mine weeks ago. Ordered it end of January when the link was posted. Still have to test with it so was asking if he tested such a board.
[Android Head-Units] Aaantonn:
I thought he was also 0.06 amps. If this is 0.035 amperes, then we calculate correctly.

12/0,035=342 Оhm

You want to reduce the speed to 5000, so we need 1/3

342/3=114 Ohm

Closest 110,120. Better take 120 Omh

The power of the resistor depends on how much it takes on. While the motor is running, the mains voltage rises to 14V.

14/3=4,666

Power Formula Pr=(U*U)/R

(4.666*4.666)/120=0.181w

R-120 Ohm 0.25w
[Android Head-Units] Aaantonn:
V1 works on the fan, V2 will have a weak overclocking effect, since the fan is very low-power, the board can only turn it on and off. A 22 ohm resistor is needed in front of the board so that the board does not enter protective mode during a power surge. I had to redo the connection between the processor and the case, since the temperature sensor was glued to the protrusion that should touch the processor.
[Android Head-Units] Clandaries:
Hello,

i have a head unit from HIZPO (ROCO K706)

Do we know how to root it?

Until now i just had MTC head units.

Thank you.
[Android Head-Units] Clyde72:
Look a the first post here for the link to that dedicated thread
[Android Head-Units] Meteordust:
I tested this V2 Sunon fan on 5 volt, well that will give hardly any airflow, but still starting by itself.

Based on 12 Volt, 35mA and 342 Ohm of the fan...

To cut down the voltage with 3 volts (75% fan speed) you need around 110 ohm resistor in line connected, if you want to cut down 4 volt (67% fanspeed) you need 171 ohm.

V out will be the voltage over the fan, so for 7500 tot 5000 rpm (67%), assuming that the rpm of the fan is almost linear with the voltage, it should be around 170 Ohm /12 volt.

Yes indeed our car probably deliver 14 volt when engine running, but assume that this unit has a 12 Volt power and 5 Volt DC/DC converters inside for the outputs/ inputs, mainboard, screen, usb....., somebody already measured the voltage of the fan plug??, most likely it is a 12 volt stable one.
[Android Head-Units] wytrych59:
Cześć

Mam problem z moim radiem, który nie zawsze odczytuje muzykę z usb.

System widzi, że usb widzi pliki muzyczne, ale lista aplikacji jest pusta.

Cały czas tylko napis ładuje playlistę.

Pomaga tylko w użytkowaniu urządzenia. Zmiana oprogramowania i MCU nic nie daje.

Może masz jakiś pomysł na ten problem.

3/32g

QF001.20230109.190922_v3.08_01

MCU.QF01.V01.68.20221125.011021

Android: 12

Dpi: 1280x720

DSP: BD37534

Radio: TSC 4745

CanbusSkoda
[Android Head-Units] snaker12:
Hello,

i have a hizpo s5 and i want to know how i can connect a front camera in the unit.I cant find anywhere a cvbs1 or cvbs2 input on the menu of the device so that i can see the image.
[Android Head-Units] Clandaries:
Unfotunately it seems that i am blind. I cant find it how to root the head unit.

I know how to do it with MTC head units via ADB push but this does not work here.

Thank you
[Android Head-Units] blue_one:
Hi,

the device is already rooted - but only accessable via the adb shell. From there you have root privileges and SU binaries. So you can do everything you want with this unit.

The usual rooting process with a patched boot.img does not work yet because we do not have acess to the recovery yet.

Cheers
[Android Head-Units] Clyde72:
You are not blind. I meant the first post & recovery thread treating rooting a.o.
[Android Head-Units] Clyde72:
If there is some 3 legged smd component labeled "7812" in the fan circuit of the unit a.o. then that is a 12V fixed voltage regulator. Could also be LM317 or such to regulate voltage...

I can not check it as my unit is mounted fixed in my car and in daily use...
[Android Head-Units] Aaantonn:
I checked with a multimeter, the output for the amplifier, to which the seller advises connecting a fan. So, it is not stable, it jumps up to 14v. and with the engine running, the fan already whistled.

Everything is as I thought, so I was not mistaken, the resistor is 110-120 ohms.
[Android Head-Units] Meteordust:
Okay thanks for being clear that this plug for fan is just a direct voltage from the car, well a fan that is made for 12 volt should not run on 14 volt.

To prevent overvoltage a for instance 110 Ohm would be indeed a good choice.

14x342/(342+110)= 10.6 volt.

Based on Sunon fan 12 volt/7500 rpm this will be around 12.5 % (10.6/12) lower voltage compared to the design of the fan when the engine running.

I would not myself cut down the rpm too much, just to cut down a little noise and protect the fan against 14 volt, my stock fan provided with this HU unit is just managing a good cooldown, when car inside is 22 degrees I see CPU temperature already above 50 degrees in the fan app with just only the radio on.
[Android Head-Units] Clandaries:
I used a 5 volt USB fan in my moms head unit. Working nice and silent.

I also will use a resistor on my head unit because this little fan is just to loud :)
[Android Head-Units] Aaantonn:
For everyone who asks for an external microphone and everyone who is not satisfied with its quality. I soldered the microphone and lengthened its legs with a thin wire, placed it right on the hole and stuffed pieces of ordinary cotton wool in a circle. The microphone works great! Now I'm talking on the phone in the floor of my voice, the sound is clear, you can't separate it from a regular mobile phone. Absolutely vseravno where the head is turned, everything is heard equally cool.

At first I wanted to lengthen it by cutting off the legs from the LED, but the hole is not exactly in the center and I could not bend them. At what I carelessly unsoldered the microphone and one leg flew off, I just stuck it back and soldered it, I thought the microphone was damaged, but no!

Don't even bother looking for an external microphone, etc., if you know how to solder, then everything is elementary. In comparison, the VW's external microphone, which is located as close to the face as possible, does not sound better.

Voice commands work even with music playing! I had an external microphone included, but I don’t even see the point of putting it in.
[Android Head-Units] Clyde72:
I was just thinking, the foot print off an smd 7812 voltage regulator isn't that much bigger then an resistor so maybe use a voltage regulator in stead of an resistor, could even be an 7809 if you do not want the fan to blow at full speed. No need for cooling the regulator body as the fan hardly draws any current.
[Android Head-Units] Clyde72:
@nyp42

New mcu for S1-S4 a.o. Just installed it.

Zlink app got installed + choice option in factory settings to switch between Carletter & Zlink.

Speed depend volume adjustment settings finally got added in factory settings with 4 levels, off, weak, medium, strong. Still have to test if SVC works though but I really hope it will...
[Android Head-Units] Aaantonn:
The meaning of the resistors is to reduce the speed, since the fan whistles, even at 12v, even at 14v. The fact is that in our country there is only a fan for 10,000 rpm, someone in the country only has 7500, but this is too much, we need V 1 for 5000.

Only as an option to put smd 7812 in front of a resistor for stable operation.
[Android Head-Units] Clyde72:
Please use English.

What format are the files? I know it reads flac, mp3... Secondly I know by experience that the unit is picky on Udisks. Did you try several usb sticks?
[Android Head-Units] Clyde72:
@Meteordust

I just had a short drive (to a bakery) only listening FM and when I turned off the engine when back CPU & GPU temp showed 43°C (dropped to 41°C) and it is winter now (car interior temp 20°C). So if the unit heats up that easy I think it is maybe more interesting to leave the fan constant on (and regulating voltage) then searching any further for temp control...
[Android Head-Units] Clandaries:
Hi all,

is it possible to pull apk's via ADB, to install them on other head units?

I would love to install Toppal on my mothers FYT uis7862 head unit.

I cant find the apps on the net.

Thank you
[Android Head-Units] Clyde72:
aiRobo is available in the app stores otherwise

looks similar but not tested
[Android Head-Units] Telperion:
This is a system/vendor dump:

https://xdaforums.com/t/general-dis...irst-post-first.4525675/page-52#post-88217519
[Android Head-Units] Telperion:
This is the decompiled content of the Fan Control apk, if anyone wants to take a peek.

Spoiler content hidden.
[Android Head-Units] Telperion:
How much disassembly is required to access the microphone panel? Do I need to take the whole back panel off, or is it possible to pop just that panel open to access the board?
[Android Head-Units] marioti:
you just pull the blend on the back side and that's it. PCB with led, micro switch and mic (ofcourse) is fixed on the tape (i don't' know what it's called in english). The pcb just pop up easily.

I have done the mic just like Aaanton. But at first i placed there 2mm foam with hole, then i made an oring (with the same foam), I use 0.25mm diameter coated wire, but just to make sure i paint it varnish PVB

As for the fan. I ordered V2 version and i'll use 180 Ohm resistor, just to lowered the rpm below 5000
[Android Head-Units] Clyde72:
Clean fix, tested mic improvement yet?
[Android Head-Units] marioti:
unfortunately, i don't have the right adapter to connect with car. I made a deal with osuret, and they should send it to me. But as far as i know, i need to wait minimum 15 days to delivery
[Android Head-Units] Clyde72:
Now I remember, the Skoda & quadlock story. Nice to hear they will ship you the correct harness
[Android Head-Units] snaker12:
Guys i have a very interesting question. For those who have parking sensons is it there any program compatible with this unit that shows the distance from the oblstacles on the screen. I have seen some aftermarket android units to do that
[Android Head-Units] Jucov:
Hello I had a big accident. After a month of use, the screen suddenly went out. Hoping that "the wire was disconnected from the shaking" I took the device apart and found that the problem was not in the wire... This part was burned out. Who can tell me what this part is and what it can be replaced with?
[Android Head-Units] Jucov:
Found. This is https://datasheet.lcsc.com/lcsc/1810311211_Silergy-Corp-SY7200AABC_C107309.pdf
[Android Head-Units] Dmitry82:
Good afternoon. Installed S8 device in VW Crafter, using it without CAN bus. I can not change the backlight of the physical keys! The headlight detection feature is enabled and working correctly. But the color of the buttons is always white, when choosing a different color, nothing happens! Who knows what's the problem? Thank you
[Android Head-Units] popamor:
What is the version date of your firmware and MCU?
[Android Head-Units] blue_one:
My S8 has only white backlight on the buttons too. But the shop i´ve bought it from did not mention RGB light so its ok for me.
[Android Head-Units] Dmitry82:
QF001.20230207.180117_v3.27_01

MCU: QF01.V01.73.20230207.002121
[Android Head-Units] xdsbx:
You can buy this part on AliExpress

https://a.aliexpress.com/_EvPfNVX
[Android Head-Units] marioti:
if you haven't mount HU yet, take a look at the side panel where mic is. Take a colser look at these mini leds, if they are rgbw they should look like this. If so, it is a software issue. If they're not, your seller is lying
[Android Head-Units] Dmitry82:
Thanks for the answer and photo, but HU is already installed in the car. I thought it could be done programmatically.
[Android Head-Units] Clyde72:
Rgb leds are controlled by variable tensions supplied to Red, to Green & to Blue making up (mixing) the perceived emitted colour. That is achieved by controlling circuitry not software itself.
[Android Head-Units] Clandaries:
The keys for calling does not work. The head unit does not recognize when i press those keys.

But Keys like V+ V- next works fine.

What can this be?

Thank you
[Android Head-Units] xdsbx:
Wrong wiring from key1 or key2 wire.
[Android Head-Units] snaker12:
For the love of god does anyone know how to make these buttons of voice control and answer/end call work on a ford mondeo mk4 with hizpo unit? I have tried everything and i cant locate where these buttons end up.

The steering wheel controls work fine as they work by changing the resistance between swc and swc gnd when a button is pressed. But these buttons on the inidicator switch are so frustrating! I have checked all the wires for resistance on the bluetooth module connector and i cant find resistance anywhere. My theory is that these buttons end up at the bluetooth module and not at radio quadlock pinout as i have checked all the wires there and i cant locate them.
[Android Head-Units] Meteordust:
Yes that was my thinking too, I just wanna place a temperature controller with a sensor close or inside the housing of this HU, lets say at 15 degrees fan on, just to prevent cold humid air blowing into the unit, also live in cold area during winter, periods with high fog.

For Sunon fan V1/V2 or V3, in documentation I saw max allowed voltage is 13,8 volt, so I will definitely put a resistor (110 Ohm), that with 14 volt the voltage will not be higher then 11 volt or put a L7810 voltage transistor, like you mentioned, cutting the RPM even lower is not wise I think.

The 7812 probably will not work I think, min allowed voltage supply is around 14 volt, or at least from this specific 7812 manufacture I saw, don't know what it does when voltage supply is only 11.8 volt (engine off).
[Android Head-Units] nyp42:
Neat. I've been waiting for MCU update for the S1-S4 units. Also SVC is a welcome new feature.
[Android Head-Units] Meteordust:
@Dmitry82​

Heard that before, it looks like without canbus something is not working, I have canbus connected and can change all colors, but my main headlight need to be on.

I have automatic headlight system, so entering a tunnel or during night, my main headlights of car goes on, my chosen led color of HU goes on and HU screen brightness is dimming.

So without a signal from canbus it seems only giving not so bright white light, with my main headlights off I also don't have a colored led, it is going on only when it's dark, so actually how it should work with a canbus.
[Android Head-Units] Clyde72:
Just checked datasheets. You are correct, 7812 wouldn't work, 7810 (thx, didn't think of that version) barely if you put a resistor, without resistor no fuss when motor running: output 10 VDC, input 12,5-28,5 VDC

If I would install a voltage regulator, I would put it outside the unit across the blue/black wires. Input & output leg in line with blue wire, middle leg in line with black wire (gnd) or to chassis if this is grounded. Insulate legs with heat shrink tube. No additional resistor...

Here climate is a bit more moderate, no really harsh winters in Western Europe...
[Android Head-Units] Clandaries:
Unfortunately i cant get the steering wheel keys for thelephon to work.

Everything is ok with the wirering.

So i think it is a problem with the firmware or maybe the MCU?

The translation is also very bad so i must guess what it means in the settings.

I am not really happy with this head unit. All other android based head units works as they should (joying Sofia, Klyde and MTC) but not this one.

Maybe they find out why there are some users who cant use the telephone keys.
[Android Head-Units] Aaantonn:
Maybe you just ask the seller a question? I tried looking for my problem with the buttons here, on a bunch of videos, everyone advised me to either change the firmware, or figure out the wires, adapters, etc. They said the wiring was wrong. It turned out that you just needed to select the brand of your car and the brand of Kanbus in the factory settings and it all worked! I was sure that the wiring is ok. since the native radio worked fine and all the keys on the steering wheel worked, so it turned out. It’s good that I didn’t get into the wiring according to the advice of some members.

Also, some functions did not work for me, I asked the seller to send a new firmware and MCU, I did not begin to install an unfamiliar MCU, since here they wrote more than once about problems with devices after replacing the MCU. The seller knows your device and what you need, and those MCUs that people drop here can bury your device. The MCU is made for the system, and if some important chip in the devices differs, then that's it.

After replacing the MCU and firmware, everything worked.

Of course, if the seller is silent, which is unlikely, but even so, you can try to install the MCU from here at your own peril and risk, just check everything.
[Android Head-Units] Aaantonn:
Have you correctly chosen the name of the canbus and the brand of car in the factory settings? Maybe this is the problem?

I have two items in the menu with key learning, but you can only configure in one, the second I did not understand why, nothing happens in it during learning.
[Android Head-Units] Clandaries:
Suzuki has no canbus until 2016. So i cant choose canbus. I have a Swift Sport from 2015.

Firmware and MCU ist original from the seller, so i dont know what else.

I wait until tomorrow what Hizpo will answer.
[Android Head-Units] Clyde72:
Please share if SVC is working. It is in factory volume settings. I don't know if it also works without canbus (still not reconnected canbus yet) by GPS speed...

Btw, does it work to disable the backup car procedure with canbus connection? That was one of the reasons I disconnected canbus way way back...

Thx in advance
[Android Head-Units] Telperion:
With the mic capsule soldered to the PCB from the factory, when you took the mic off, how did you know which lead on the mic to solder to which contact on the PCB? Are there labels on the mic and PCB after separating them?
[Android Head-Units] Clyde72:
Finally, a clear photo & clear explanation
[Android Head-Units] Clyde72:
No idea but if not put a multimeter in continuity mode before desoldering and probe either so'der joint to ground. And remember the polarity when desoldering the capsule.
[Android Head-Units] snaker12:
I made a terrible mistake and i joined swc cable1 to can-rx cable. The android unit works but every canbus command does not work. Also android unit screen doesn't close when i turn off the car. It always stays on even if i lock the car. Every other function of the android unit works fine.

Do you think that i fried the canbus unit or the can rx circuit on the android unit? My car is a Ford mondeo mk4 and most of the commands including ILL, ACC and reverse camera come from canbus.
[Android Head-Units] Aaantonn:
On the microphone, the legs are shifted to one side, on the board there is an imprint from the microphone in the same way, you will immediately see which leg goes where.
[Android Head-Units] blue_one:
Hi, i don´t know your technical skills but you can use a canbus sniffer to check if the car sends the data to the head unit. You can use an arduino and free software for that. My guess is that you fried the canbus input of the head unit. Otherwise your car wouldn´t work anymore with a misfunctional canbus.

Cheers
[Android Head-Units] snaker12:
I have very good microsoldering skills but i don't know of programming. Is it possible that i fried the canbus decoder because the can-rx goes from canbus decoder to head unit and the swc cable was connected from the radio side to that cable.
[Android Head-Units] blue_one:
The canbus is digital and the SWC is analogue voltage. I don´t know the excact voltages but i guess you gave around 12V on the canbus input which usually expect 2-3V. But thats all digging in the dirt. You have to test it out.
[Android Head-Units] marioti:
I marked it before desolder. But on the back side of capsule, there is a "+" mark, near one leg. Solder it closer a microswitch
[Android Head-Units] snaker12:
Thanks for the reply i am going to order a new canbus decoder and if that doesn't work i will check the rx input circuit on the board.
[Android Head-Units] blue_one:
Can a S5-S8 owner ask his seller for the latest update please. My seller isnt cooperative.

There should be at least the version from 23.02.2023 available. (The S4 version is in the firmware thread.)
[Android Head-Units] marioti:
Ossuret send me 2023-02-07 update, but it's already posted in the firmware thread. I haven't seen the newest.

Just to make sure, can we skip some firmwares and update just the latest?
[Android Head-Units] Clyde72:
You know firmware files are universal and 0207 mcu was allready shared for S5-S8.

I'm hoping on a major/monthly update arriving soon. We are March allready...
[Android Head-Units] blue_one:
Yes. But there should be a 0223 mcu update for S5-S8. 😉
[Android Head-Units] Aaantonn:
Who knows why the VW does not show the battery charge? Is it possible to solve this problem? It's already been mentioned here but no answer. Could this be a problem with the old MCU 20.22.09.13

As far as I know the MCU is responsible for the kanbus, maybe this is the problem?
[Android Head-Units] Clyde72:
Normally yes as you guys always get spoiled 😉.

And secretely I am waiting on someone confirming SVC works, preferably independent from canbus connection 😉
[Android Head-Units] marioti:
i just tested a sunon V2. It is loud. Much louder than original fan. But with 180 Ohm resistor (12V power supply, i can't test it in a car, yet) it is way much better. From 40cm distance i barely hear it. Original fan make a odd noise, like a coil.

one more thing, sunon got only 3-point mount :)