Current version of the OpenAuto Pro is 12
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Show Yellow Thunder only in OpenAuto Pro
#11
Please try with the official power supply https://www.raspberrypi.org/products/ras...rType=home. The one from pictures is not the official one. Please also double check condition of the Micro USB socket in your Raspberry PI.
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#12
(11-09-2020, 02:40 PM)owengarrett-RX8 Wrote: So I have the same problem, and I don't think it has anything to do with the raspberry pi itself. I believe it is Undervoltage to the screen. I am using the official pi screen, and rpi 3b+ board, and a 5v USB 2.0 to power mine and whether plugged into a wall with the official cord or not I continue to get the Undervoltage sign. When I the pi into something more stationary like a tv/monitor then that sign goes away so I think it all has to do with the power going to the screen.

Hi! thanks for your answer.


I tried to connect the raspberry to a computer display (monitor 32 inch) with HDMI and plugged into a wall but I saw the same icon. Then I think that the problem don't be the touchscreen.

I tried all combinations:
  • Touchscreen to the Raspberry and this to the wall with a unofficial power supply.
  • Touchscreen to the Raspberry and this to the wall with the official power supply.
  • Touchscreen to the wall and Raspberry to the wall with a unofficial power supply.
  • Touchscreen to the wall and Raspberry to the wall with the official power supply.
  • Touchscreen plus Raspberry to a powerbank (2 USB cable).
  • Touchscreen plus Raspberry to the radio in my car with USB cable.
  • Touchscreen to the lighter in my car with USB cable and the Raspberry to the radio in my car with USB cable...
All combinations... and I've seen always the same undervolt icon Sad

I don't know that more do...

(11-09-2020, 02:44 PM)noelk Wrote:
(11-09-2020, 02:31 PM)estefigj Wrote:
(11-08-2020, 03:31 PM)BlueWave Wrote: Undervoltage icon is not the matter of software but Raspberry Pi HW itself. Issue is strict related to the power supply you are using. Did you try with another official Raspberry PI power supply?

So I don't understand ... Yes, I have tried the official charger and the same thing continues to happen.
I just took photos right now doing the test with 2 SD cards, the images are flashed with Etcher:
SD 1: The OpenAuto Crankshaft image is loaded.
SD 2: OpenAuto Pro image is loaded.

At photos you can see:
- Raspberry Pi 3B.
- MicroSD with software loaded.
- HDMI cable to connect touchscreen with Raspberry.
- USB / micro USB to power-supply touchscreen with Raspberry.
- USB external bluetooth.
- USB external Wifi.
- USB / USB type C to connect my smartphone with Raspberry.

For this reason I think that the problem is the software. I think there is something that should fix it because right now I am testing with a wall socket, but I want to use this in my car and there I am having more problems with OpenAutoPro since the yellow lightning icon makes the touch screen unresponsive .

I bought your software because I wanted to connect the phone by Bluetooth, but it is giving me too many problems, and if the power supply does not work well with your software I cannot use it and I will think about returning it. I'm using your software requireds and I don't want pay more money if the problem doesn't me.

PS: The cable I am using is not a telephone cable. I have tried the official Raspberry charger and also tried another charger that has a button to turn the Raspberry on and off (you can see it in the photos).

Can you help me to fix the problem, please?
NIce setup.  You are going to need at least 3 amps or 3000 ma  with 5.1 volts to power your system.  OAP  allows you to use more of the functionality of the pi.  I did not see your phone plugged in  but when you try that with AA the bolt will be there as well and it will not function properly.  Can't tell what screen you are using but I would use a separate power supply  on it for testing purposes.  For my project I used 2 power converters each delivers 5 v 10 amps.   one is for Pi and the other for screen and powered usb hub.  Hope this helps.

Hi! Thank you for your help.
Please, can you show me your power converters? I need understand what is happen.

Yes, in the photos I plugged my smartphone but you can not see because I'd taking the photos with him! Smile
I see this undervolt icon always, with the phone connected and disconnected...

(11-09-2020, 02:59 PM)BlueWave Wrote: Please try with the official power supply https://www.raspberrypi.org/products/ras...rType=home. The one from pictures is not the official one. Please also double check condition of the Micro USB socket in your Raspberry PI.

Yes, in the photos the power supply doesn't the original charger, but I tried with a original power supply and I see the same icon. I can do new photos with this original charger but ... what solution is this? I can't plug the original charger into my car, I need to do it with USB to connect it to the radio or the car cigarette lighter.

I tested the MicroUsb socket with other softwares and with others screens and all items works correctly.
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#13
We did not observe undervoltage icon on any of our reference setup. Looks like a problem with your hardware.
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#14
(11-10-2020, 06:31 PM)BlueWave Wrote: We did not observe undervoltage icon on any of our reference setup. Looks like a problem with your hardware.

There are many threads on this site about power,  I suggest reading a few and you may find that it is as simple as a cord or the adaptor for audio takes power away from the pi. take a look and they will give many ideas of what to look for.
Tested build hardware that works!!!

https://bluewavestudio.io/community/show...p?tid=2106
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#15
What if there is something wrong with the sd card? It looks like that's the only thing thats different.

https://www.reddit.com/r/raspberry_pi/co...undervolt/
Raspberry Pi 4b-4gb / Official 7" touchscreen / OAP 5.0 / Honor 8x (AndroidAuto 5.) / USB sound card / USB microphone
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#16
I was having the same problem when i connected the pi in the car. The problem was not Amps but voltage. With connected all screen, bluetooth and usb sound card the current that draws was like 0.8 Amps. Voltage was dropping to 5V and that was not enough for the pi and i needed to correct the Voltage to 5.4V and the flash was gone.
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