Potential fix for USB pad problems

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peteralan
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Re: Potential fix for USB pad problems

Post by peteralan » Thu Aug 03, 2017 2:03 am

Fixed: Instead of solder pp35 and 40, I had to solder the ID pin of the microusb socket directlt to ground, now it works perfectly :D :D

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Re: Potential fix for USB pad problems

Post by Lpoolm » Sat Aug 05, 2017 11:31 am

PolletjeNL wrote:
Fri Jun 02, 2017 12:35 am
Soldering PP40 to PP35 will result in canceling the OTG, and will give you the change to use any USB Hub. PP40 is the crossover pad from the backside of the microusb connector's OTG pin. PP35 is GND. I have been using this for a while now in my Zero builds.
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thanks for this, my pi zero w would not detect any usb device so would not boot, soldered those two pads now it works!!
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redled
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Re: Potential fix for USB pad problems

Post by redled » Tue Sep 05, 2017 9:51 pm

Came here to say thank you for this! After 6 hours of debugging wires for my USB audio sound card RogerX in chat recommended this post and wow, it worked!

After soldering a tiny jumper wire to connect PP40 and PP35, my audio works!

You can also just leave an empty OTG cable in the data USB port and the same thing happens.

32teeth

Re: Potential fix for USB pad problems

Post by 32teeth » Sun Sep 24, 2017 4:55 pm

Hey all

I have a few SAIO boards and have come across the infamous "no usb hub LED" issue several time
Sometimes it's temperamental, sometimes it's always.. ..well, you get it, same problem y'all have

First off, the problem is NOT with @Kite's SAIO board, the problem is typically either the Raspberry Pi 0, or the solder

1. On the Raspberry Pi 0 W (wireless) i could swear that the USB test pads are slightly closer, thus making them more susceptible to shorting.
2. Your soldering. Too much, too little, too hot, too cold. Again, temperamental.

So the good news... ...if you have really F'd up, you will NEVER be able to remove your Pi 0 (unless you have a hot air rework station), and thus i present you my solution. For existing boards, and those not yet built

1. Get yourself some Micro USB DIY kits (they look like this), and you can read all about the pinouts here
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2. You ONLY need to connect two wires to the Micro USB (D+ and D-), YES, really
3. Use the USB cable (4 wire JST SH) that comes with @Kite's kit and solder D+ and D-
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4. Now connect, the USB micro to the Pi and the other end to the SAIO
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5. Clean it up
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IMG_0984.jpg (2.33 MiB) Viewed 6668 times
6. Success
IMG_0983.jpg
IMG_0983.jpg (2.67 MiB) Viewed 6668 times
Feel free to PM me if you have any questions

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YaYa
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Re: Potential fix for USB pad problems

Post by YaYa » Sun Sep 24, 2017 10:18 pm

So with this method, i don’t need to solder the USB pads from Pi to SAIO ?
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32teeth

Re: Potential fix for USB pad problems

Post by 32teeth » Mon Sep 25, 2017 5:10 am

YaYa wrote:
Sun Sep 24, 2017 10:18 pm
So with this method, i don’t need to solder the USB pads from Pi to SAIO ?
Correct

That this method does is connect the Micro USB dongle to the SAIO board via the 4 pin USB Hub connector provided in the kit

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YaYa
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Re: Potential fix for USB pad problems

Post by YaYa » Mon Sep 25, 2017 5:19 am

Nice :geek:
May i love you for the tip hahaha :mrgreen:
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