wildfire
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Just got a Pi Zero

Sat Dec 03, 2016 8:14 pm

A couple of questions before I blow it up...

1) 2 USB connections, which one is for power or does it matter... Looking at the Zero is it the one furthest from HDMI or closest (again does it matter).

2) As well as acquiring the zero I also purchased a solder station, my first project is to solder on headers to the GPIO's, what's the optimum temperature to do this, I have a choice of 200,300 or 400 Celsius, new to soldering and hey it's only a fiver so no big deal if I mess up.
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DougieLawson
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Re: Just got a Pi Zero

Sat Dec 03, 2016 8:53 pm

1. Image

2. What sort of solder? Lead free or leaded?
http://www.rfcafe.com/references/electrical/solder.htm
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wildfire
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Re: Just got a Pi Zero

Sat Dec 03, 2016 8:57 pm

Thanks Doug. I feel safe plugging in now, I'll blow it up tomorrow :D
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wildfire
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Re: Just got a Pi Zero

Sat Dec 03, 2016 9:23 pm

DougieLawson wrote: 2. What sort of solder? Lead free or leaded?
http://www.rfcafe.com/references/electrical/solder.htm
Leaded, with flux, I'll take a peek at your link, BTW I've a Pi B a Pi 3B and now a zero (it's bleeping tiny) congrats to the Pi foundation, keep up the good work.
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HawaiianPi
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Re: Just got a Pi Zero

Sat Dec 03, 2016 9:27 pm

The power lines are connected to both the power (PWR IN) and data (USB) ports, so you can power it from either Micro USB port, but you can only get data through the one closest to the HDMI port. To use the data port for power you would need an OTG adapter with power injection similar to this.
Image

Soldering is not difficult to learn, but I would practice on something other than your Zero first.

Edited to correct a typo...
Last edited by HawaiianPi on Sun Dec 04, 2016 1:04 am, edited 2 times in total.
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wildfire
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Re: Just got a Pi Zero

Sat Dec 03, 2016 9:40 pm

HawaiianPi wrote:The power lines are connected to both the power (PWR IN) and data (USB) ports, so you can power it from either Micro USB port, but you can only get data through the one closest to the HDMI port (PWR IN). To use the data port for power you would need an OTG adapter with power injection similar to this.
Yeah, got that from Doug, cheers.
Soldering is not difficult to learn, but I would practice on something other than your Zero first.
Yep that's a gimee, my problem is colour blindness and old age, soldering 30 years ago was not an issue. Thanks for your response, take care and have a good night. I might still blow up the zero but my B and 3B are safe, :D
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drgeoff
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Re: Just got a Pi Zero

Sat Dec 03, 2016 10:25 pm

HawaiianPi wrote:To use the data port for power you would need an OTG adapter with power injection similar to this.
A standard OTG adapter should NOT feed power into the device which is being told by the adaptor to operate as a USB host.

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HawaiianPi
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Re: Just got a Pi Zero

Sun Dec 04, 2016 1:02 am

drgeoff wrote:A standard OTG adapter should NOT feed power into the device which is being told by the adaptor to operate as a USB host.
That adapter works as shown. That's my Pi Zero, and it booted and connected to my wireless network with power supplied by the white cable in the picture (that other board sticking out of the side of the OTG adapter is a WiFi dongle).
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drgeoff
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Re: Just got a Pi Zero

Sun Dec 04, 2016 11:21 am

HawaiianPi wrote:
drgeoff wrote:A standard OTG adapter should NOT feed power into the device which is being told by the adaptor to operate as a USB host.
That adapter works as shown. That's my Pi Zero, and it booted and connected to my wireless network with power supplied by the white cable in the picture (that other board sticking out of the side of the OTG adapter is a WiFi dongle).
I don't dispute that your adaptor is doing that. Just pointing out that an adaptor that conforms to the principles behind USB OTG should not do that, so no guarantee that other adaptors will power a Zero in the same way that yours does.

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HawaiianPi
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Re: Just got a Pi Zero

Tue Dec 13, 2016 5:26 pm

drgeoff wrote:I don't dispute that your adaptor is doing that. Just pointing out that an adaptor that conforms to the principles behind USB OTG should not do that, so no guarantee that other adaptors will power a Zero in the same way that yours does.
While it does power my PiZero, it does not charge my Samsung Galaxy Note 4 phone (but the OTG function works). ¯\_(ツ)_/¯

I was able to power a portable hard drive connected to my phone through the adapter (even though the phone was not charging). So it seems to function as it should when used as an OTG adapter on my phone. Is the Pi-Zero's data port really an OTG port, or just a micro sized USB port?
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