Hi,

Lets go step by step.

Posted by: @christian-schietzel

now I have successfully flashed my Pico_HV4 PPoe with firmware 0133.

 

2022-06-20 1804,137 [WARNING] PICO PCB version: 0x41 PICO model: B PPoE

2022-06-20 1804,140 [WARNING] RPi model: Raspberry Pi 4 Model B Rev 1.4

 

The system is working now, the SYS LED is flashing, CHG, FAN ,TMP LED works.

OK. That is fine. Means your system is working 

Posted by: @christian-schietzel

I start booting my pi with the usb-c supply. It starts and the SYS LED is flashing … all is fine.

When I disconnect the usb-power it switch to battery - Mode….

OK. Means the MOSFET switches are working properly.

Posted by: @christian-schietzel

Is it possible to check the board with  I2C register to check the PPOE state or anything else.. ?

Yes. The PPoE is directly connected to the EPR, just the protection system is for 28V DC. Therefore you can read the EPR Level and will know the voltage on the PPoE. However remember it is protected for the ESD on PPoE, it is not protected if you connect higher voltages than 28 VDC. Note it.

Posted by: @christian-schietzel

Can I check any PPOE-FUSE or it is possible to reset the PPOE State??

 

Is the PPOE-Port over voltage protected ?

 

What can I do to check the POE-STATE...?

It is over voltage protected but if you connect much higher voltage to this will burn one of the diodes in the bridge.

Normally the EPR LED should be lighting. Please check with multimeter the on the pins if there is coming voltage over PPoE  on these two pins (see on the attached picture) and if available then please check the voltages with the following command:

sudo i2cget -y 1 0x69 0x08 w for battery level in 10th of mV

sudo i2cget -y 1 0x69 0x0A w for RPI level in 10th of mV

sudo i2cget -y 1 0x69 0x0C w for EPR level in 10th of mV (PPoE in your case)

I of course assume that you have model PPoE, and soldered all necessary pins and sockets.

I also assume that you have NOT used any other PoE that have higher voltage than 24V DC (it is protected up to 28VDC)

If it is possible please send me picture of your UPS PIco HV4.0

BR Pi Master

Hi,

so first the result of sudo i2cget -y 1 0x69 0x08 w ==> 0x0420

now                       sudo i2cget -y 1 0x69 0x0A w ==> 0x0510

and                        sudo i2cget -y 1 0x69 0x0C w ==> 0x0000

I have measured the Volts at the 2 pins ==> 0,30 V (see in your picture).

Further i have measured the Lan-Cabel (see pickture!) all looks fine!

Where are the diodes located ?

It is possible to repare this diodes or check there working state ?

I would like to send you a picture, but the upload doesn't start?

Sorry the picture comes up!

@christian-schietzel 

Hi,

Than you for the information!

If you not connected anything else (i.e. high voltage PoE, instead of PPoE) diodes are fine. We have enhanced protection so very impossible to burn it.

Posted by: @christian-schietzel

so first the result of sudo i2cget -y 1 0x69 0x08 w ==> 0x0420

now                       sudo i2cget -y 1 0x69 0x0A w ==> 0x0510

and                        sudo i2cget -y 1 0x69 0x0C w ==> 0x0000

Battery is charged, 5V are fine, the PPoE is missing. 

Remark: The PCB has been designed to have mounted FAN on Bottom. This will guarantee better cooling. Could be mounted on top, but as you see you need to pass cable abnormally.

Posted by: @christian-schietzel

I have measured the Volts at the 2 pins ==> 0,30 V (see in your picture).

These pins are directly connected to the POE pins of the Raspberry Pi, therefore as far you not have voltages there, you do not have PPoE powering. The most possible reason is the you are not providing such power via your PPoE injector.

Posted by: @christian-schietzel

Where are the diodes located ?

On the bottom if PCB, near the PPoE connector, but they are fine on my opinion. Your Injector is problematic, it is not supplying PPoE voltage.

You must have voltages on these 2 pins, but even on others are voltages, system is such designed to cover all possibilities. 

Send me more info for your PPoE Injector or device.

I can support with all information regarding the diodes, but currently is not needed, and made more troubles than help. 

BR Pi Master

The switch is a UniFi Switch 8 POE-150W.

The Pi works 2 weeks with this switch..

The FAN is for my constellation so correct.. not enough space under the HAT.

I connect a 12 V Powersupply on the extern power block. The EPR LED change to on!!

I checked the logs (unifi) it is possible that the switch has change for 10 sec. to poe+

But i don't no ...

Is this correct that i have no volts at the 2 pins when the diodes are burned off !

Hi,

Posted by: @christian-schietzel

The switch is a UniFi Switch 8 POE-150W.

The Pi works 2 weeks with this switch..

hmmm

Posted by: @christian-schietzel

The FAN is for my constellation so correct.. not enough space under the HAT.

There is enough space, we are mounting this FAN for customers in many many PIco, but OK it is not a big problem, if covering your needs.

Posted by: @christian-schietzel

I connect a 12 V Powersupply on the extern power block. The EPR LED change to on!!

That means your Buck converter is fine

Posted by: @christian-schietzel

I checked the logs (unifi) it is possible that the switch has change for 10 sec. to poe+

But i don't no ...

another solution could be you burned on some way the PoE interface in the Raspberry Pi, just thinking loudly

Posted by: @christian-schietzel

Is this correct that i have no volts at the 2 pins when the diodes are burned off !

No. These diodes are after these pins. So that means you are not receiving power on PoE at all

For 99% you are not supplied (for unknow yet reason) PPoE to Raspberry Pi. Diodes and everything are after see the schematics

Do the following. Remove the UPS PIco and check if you have voltages on these pins. 

Keep me informed

BR Pi Master

When I remove the Pico HAT it is not under Power?

I have removed the Pico HAT and measured the 2 pins PPOE on the Pi4 ==> 24 Volts !

Hi,

Posted by: @christian-schietzel

When I remove the Pico HAT it is not under Power?

Yes, you need to remove the PIco to see if the 24 V DC arriving to these pins. Just to measure it. 

You do not need to have PIco to make such measure on the Raspberry adequate pins.

Posted by: @christian-schietzel

I have removed the Pico HAT and measured the 2 pins PPOE on the Pi4 ==> 24 Volts !

And if you put on top the PIco the 24V disappear ?

Please confirm

BR Pi Master

PS. Make sure you are doing any removing and putting back PIco to your system without powering on PPoE

Hi i will buy a jumper-kabel to connect the Pico HAT to the pi4 to measure voltages on this pins..

I will inform you when i ready to measure...

Best Regards

Chris...

@christian-schietzel 

OK

BR  Pi Master

yes, when i measure the pin's on the PI4 i have 24Volts..

When i put the Pico back 24 Volts disapears..

I tested another 24 Volts Injector with a Power-LED.

When i connected the cable the Injector-LED switch to off !

It seems to be a Short circuit ???

All other functions are working !

Best Regards

Chris...

@christian-schietzel

Hi,

Posted by: @christian-schietzel

yes, when i measure the pin's on the PI4 i have 24Volts..

When i put the Pico back 24 Volts disapears..

Yes, seem to be short circuit

Posted by: @christian-schietzel

When i connected the cable the Injector-LED switch to off !

It seems to be a Short circuit ???

All other functions are working !

You must be entered a huge voltage (much more than allowed) and burned protection on PPoE, one Zener more precisely.

So you, we can repair it for you, but you need to send it  to us. Return costs will be covered by us, and repair is for free

Please advise

BR Pi Master

ok fine, can you tell me your right adress for sending back...

Best Regards

Chris...

Hi,

Please send it back without battery. As usual, I will add something extra parts when sending to you so in reality shipping will be free for you. Please send it without battery.

Please send me email, so I will reply with return address.

BR Pi Master