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by skyluke
Sun Apr 07, 2019 10:44 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

I drilled a hole into the case and used a normal cable.
by skyluke
Sun Apr 07, 2019 10:38 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

Whatever I do, it doesn't work. When I solder a cable to one connector it doesn't work but the normal cable connection still works with that connector. I tried the same with another connector, soldered connection doesn't work, but the normal connection doesn't work, too. I believe soldering changes...
by skyluke
Sun Apr 07, 2019 10:36 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

Imperf3kt wrote:
Sun Apr 07, 2019 9:29 am
Are you sure the cable you're soldering isn't damaged in some way?
Yes. 4 different cables shouldn't be damaged.
by skyluke
Sun Apr 07, 2019 8:46 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

Whatever I do, it doesn't work. When I solder a cable to one connector it doesn't work but the normal cable connection still works with that connector. I tried the same with another connector, soldered connection doesn't work, but the normal connection doesn't work, too. I believe soldering changes ...
by skyluke
Sat Apr 06, 2019 4:19 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

Should I try to solder them directly to the pin for the port and not to the PPs?
Could that make it better?
by skyluke
Sat Apr 06, 2019 3:47 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

I don't believe that it is a problem with the Delock board. I believe that it is a problem with what I did. But what is the problem?
by skyluke
Sat Apr 06, 2019 3:24 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Re: Soldering the USB port - does not work

Yes. I tried my cable with USB power, I tried with GPIO power: does not work. I tried normal cable, with USB 5V and with GPIO power: works fine. Btw, before cutting the cable I verified that it works. It is the third type of cable that does not work. What is wrong here? I have 5V and GND on the Delo...
by skyluke
Sat Apr 06, 2019 2:24 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Soldering the USB port - does not work
Replies: 16
Views: 1196

Soldering the USB port - does not work

Hello, I try to solder a USB cable directly to the USB port. I saw that others de-solder the complete USB connector but there are PPxx that are connected to the USB contacts. This is where I want to solder to. It does not work and don't know why. This seems to work: https://raspberrypi.stackexchange...
by skyluke
Wed May 16, 2018 7:16 am
Forum: Troubleshooting
Topic: USB voltage slowly dropping
Replies: 16
Views: 1289

Re: USB voltage slowly dropping

It was the Raspi. It could have been so easy if I just replaced the Raspi and did not deep dive into this strange behavior. I changed the Raspi yesterday night and let it run until this morning. Voltage at USB ports was still at 4.91V. Please note PSU voltage was set to 5.0V as the final PSU can sup...
by skyluke
Tue May 15, 2018 5:20 pm
Forum: Troubleshooting
Topic: USB voltage slowly dropping
Replies: 16
Views: 1289

Re: USB voltage slowly dropping

Just did that. Tried a 5V 2.5A PSU using usb cable. Did not wait for an hour. And my Raspi started again with about 4.7V. Will try a new Raspi this evening or try a Meanwell PSU. Btw, I came from another smaller PSU. This was why I changed to the lab PSU. 20A and 0,75mm^2 cable should be enough for ...
by skyluke
Tue May 15, 2018 3:58 pm
Forum: Troubleshooting
Topic: USB voltage slowly dropping
Replies: 16
Views: 1289

Re: USB voltage slowly dropping

Yes, of course - I believe I can't see anything else except under-voltage warnings on screen if I reach the critical threshold. :-D Btw, it started after upgrade to 4.14 or I started to see. Yellow bolt & console messages/dmesg was how I became aware of this. (Who sees the red LED?) This is the PSU:...
by skyluke
Tue May 15, 2018 9:37 am
Forum: Troubleshooting
Topic: USB voltage slowly dropping
Replies: 16
Views: 1289

Re: USB voltage slowly dropping

@Imperf3kt: Temperature is 53-54°C @MaxK1: Yes, latest Raspbian (light, no GUI), latest firmware, no overclocking, not very hot at any point and model 3B. Btw, just ordered a 3B+, will try that. Here is the config.txt: disable_overscan=1 hdmi_force_hotplug=1 dtparam=audio=off dtparam=i2c_arm=on dtpa...
by skyluke
Mon May 14, 2018 2:06 pm
Forum: Troubleshooting
Topic: USB voltage slowly dropping
Replies: 16
Views: 1289

USB voltage slowly dropping

Hi, I do have a Raspi 3B that slowly drops USB voltage when running and I can measure that at the USB ports. The Raspi is powered by an industrial/lab PSU with exactly 5V. All time when the Raspi is running this PSU provides 5V. The PSU is connected using a cable (25cm, 0,75mm^2) that is soldered to...

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