[GTALUG] "Atom Pi"

[Alex Volkov]

It seems that I was looking at the wrong side of the board, looking more 
closely, it looks like the power is connected through a two single 
female dupont pins on the bottom of the board and not JST connector near 
the heatsink.

I found this thread about powering the board up. Sorry, reddit link -- 
https://www.reddit.com/r/Atomic_Pi/comments/bp0hvt/megathread_powering_your_atomic_pi_ask_all_your/

It is said that you need to connect several pins at once, perhaps this 
usb-to-dupont splitter should be more appropriate for the application -- 
https://ae01.alicdn.com/kf/HTB18quXpQCWBuNjy0Faq6xUlXXal/Dupont-head-4-to-USB-PC-Fan-Power-Cable-Adapter-Connector-10cm.jpg

I'm not sure why the person who started the thread says that several 
pins are needed, because dupont connector is rated for 3A.  (according 
to this thread -- 
https://electronics.stackexchange.com/questions/157026/dupont-connector-for-5a).

Full disclaimer -- I'm not an electrical engineer.

Alex.


On 2019-09-16 2:16 p.m., Alex Volkov via talk wrote:
> It is so weird to have a home server board that doesn't have sata 
> ports, one of the older cubieturck boards is better equipped for this 
> task because it has gigabit ethernet and a sata port, though 
> throughput is limited to 40MB/s.
>
> As for Hugh's note for the connector -- it looks like a standard JST 
> 2-pin connector.
> Technically you don't need to solder connectors because they are 
> crimped, but this is a technicality. I have a crimper if anyone 
> interested in making their own power supply out of usb cable.
>
> Here's someone connecting it to power -- 
> https://twitter.com/drunknbass/status/1158054016397393920?s=21
>
> This connector is compatible with dupont connector, for which I also 
> have a crimper. More practically any electronics store would have the 
> cable, or something like this connected to a 3A 5V power supply will 
> do the job -- 
> https://ae01.alicdn.com/kf/HTB1W1culKOSBuNjy0Fdq6zDnVXaM/Dupont-head-to-USB-PC-Fan-Power-Cable-Adapter-Connector-22cm.jpg
>
> The price is really great, but I'm not going to buy it because I have 
> a similarly-spec'd cromebook that I can retire for the same role.
>
> Alex.
>
> On 2019-09-16 1:39 p.m., Stewart Russell via talk wrote:
>> On Mon., Sep. 16, 2019, 12:30 D. Hugh Redelmeier via talk, 
>> <talk at gtalug.org <mailto:talk at gtalug.org>> wrote:
>>
>>     ... I just assumed that it was some surplus board that was
>>     being blown out.  Maybe it is.
>>
>>
>> It is. It's from a home server thing that bankrupted the developer 
>> before they got to market. Once they're gone, they're gone.
>>
>> While it may not be as fast as eMMC, the Raspberry Pi 4 does have a 
>> faster connection to microSD (with the right card). It also has DDR4 
>> which makes it fairly quick.
>>
>> I wrote a preso last week on a 4 GB Raspberry Pi 4 (over VNC, even) 
>> and it didn't feel like an SBC at all.  I hear that the Raspberry Pi 
>> 4 is somewhat unexpectedly picking up corporate sales as a cheap 
>> dual-screen thin client.
>>
>> Cheers
>>  Stewart
>>
>>
>>
>>
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