shifters74a
Posts: 6
Joined: Thu Jun 27, 2019 12:07 pm

Power Raspberry Pi 4 via 40 pin connector?

Thu Jun 27, 2019 12:14 pm

Hi all,

Does any one have any knowledge about the raspberry pi 4 being able to be powered by its 40 pin connector the same as previous generations?

I am asking as i am wondering if the Pi4 is compatible with the Bitscope Blade Quattro boards that i have which powers the pi via the power pins in the 40 pin connector rather the on board power connector. (the blade PSU provides up to 4A per pi so no issues with power capability).

thanks :)

Shifters

W. H. Heydt
Posts: 10284
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: Power Raspberry Pi 4 via 40 pin connector?

Thu Jun 27, 2019 3:54 pm

If that's a solid 4A that can maintain voltage regulation up to at least 3A, it should work.

shifters74a
Posts: 6
Joined: Thu Jun 27, 2019 12:07 pm

Re: Power Raspberry Pi 4 via 40 pin connector?

Thu Jun 27, 2019 4:34 pm

The Quattro board takes 12V and steps it down to 5V and powers a pi via its 40 pin connector in each of its 4 slots.

It supports all previous PI's and i was looking for confirmation that the PI4 works in the same way.

Shifters

W. H. Heydt
Posts: 10284
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: Power Raspberry Pi 4 via 40 pin connector?

Thu Jun 27, 2019 5:38 pm

shifters74a wrote:
Thu Jun 27, 2019 4:34 pm
The Quattro board takes 12V and steps it down to 5V and powers a pi via its 40 pin connector in each of its 4 slots.

It supports all previous PI's and i was looking for confirmation that the PI4 works in the same way.

Shifters
Are you talking about powering *4* Pis from a 4A source? One Pi4B would work. More than that, highly unlikely.

drgeoff
Posts: 9344
Joined: Wed Jan 25, 2012 6:39 pm

Re: Power Raspberry Pi 4 via 40 pin connector?

Thu Jun 27, 2019 6:13 pm

W. H. Heydt wrote:
Thu Jun 27, 2019 5:38 pm
Are you talking about powering *4* Pis from a 4A source?
In the opening post is written "the blade PSU provides up to 4A per pi ".

User avatar
Imperf3kt
Posts: 2388
Joined: Tue Jun 20, 2017 12:16 am
Location: Australia

Re: Power Raspberry Pi 4 via 40 pin connector?

Fri Jun 28, 2019 12:32 am

shifters74a wrote:
Thu Jun 27, 2019 4:34 pm
The Quattro board takes 12V and steps it down to 5V and powers a pi via its 40 pin connector in each of its 4 slots.

It supports all previous PI's and i was looking for confirmation that the PI4 works in the same way.

Shifters
It is stated in the launch blog (or the launch forum post, I cannot remember which) that the GPIO is fully backwards compatible with all previous Pi.
Basic electronics also says yes, it will work exactly the same way.
Google is ubiquitous - Try it today, it's free!
https://opensource.com/life/16/10/how-ask-technical-questions

shifters74a
Posts: 6
Joined: Thu Jun 27, 2019 12:07 pm

Re: Power Raspberry Pi 4 via 40 pin connector?

Sat Jun 29, 2019 9:44 am

Thanks,

pi 4 on order so will try it and feed back - shame i bought 4x pi3b+ last week (friday) and the new launch was monday!! Still gots lots of use for em!

As I have built a cluster with these (48 pi's) i seriously recommend the blade quattro boards. ( https://cpc.farnell.com/bitscope/bb04b/ ... dp/SC14214 )

A single 12V 50A meanwell PSU powers 6 quattro boards each with 4 pi's on easily. The cluster is 12x pi2b 12x pi3b 16x pi3b+ with space left for 8 pi4 4Gb yay!! :D Programming in a mix of elixir (and erlang) and python (at the edge)

thanks

shifters

User avatar
bensimmo
Posts: 4059
Joined: Sun Dec 28, 2014 3:02 pm
Location: East Yorkshire

Re: Power Raspberry Pi 4 via 40 pin connector?

Sat Jun 29, 2019 10:00 am

Yes, mainly as the official POE HAT has to do exactly the same thing.

shifters74a
Posts: 6
Joined: Thu Jun 27, 2019 12:07 pm

Re: Power Raspberry Pi 4 via 40 pin connector?

Sat Jun 29, 2019 10:04 am

Thanks - i didnt think about the POE hat!

shifters

mikerr
Posts: 2768
Joined: Thu Jan 12, 2012 12:46 pm
Location: UK
Contact: Website

Re: Power Raspberry Pi 4 via 40 pin connector?

Sat Jun 29, 2019 12:04 pm

Yes, just be aware the pi4 draws quite a bit more than previous models
https://raspi.tv/2019/how-much-power-do ... asurements
Android app - Raspi Card Imager - download and image SD cards - No PC required !

toikpi
Posts: 1
Joined: Sun Jul 07, 2019 11:38 am

Re: Power Raspberry Pi 4 via 40 pin connector?

Sun Jul 07, 2019 11:47 am

shifters74a wrote:
Thu Jun 27, 2019 12:14 pm

I am asking as i am wondering if the Pi4 is compatible with the Bitscope Blade Quattro boards that i have which powers the pi via the power pins in the 40 pin connector rather the on board power connector. (the blade PSU provides up to 4A per pi so no issues with power capability).
I suggest that you ask Bitscope directly. This is what they said in their blog entry on the RP4.
With the launch of the Raspberry Pi 4 today, we can confirm that this latest exciting addition to the Raspberry Pi family is fully compatible with BitScope Micro, Mini and BitScope Blade Uno and Duo. It can be used with Quattro too, but only using three slots due to power contraints. However, we have an update for this coming soon!
Source - https://www.bitscope.com/blog/JK/?p=JK34A

shifters74a
Posts: 6
Joined: Thu Jun 27, 2019 12:07 pm

Re: Power Raspberry Pi 4 via 40 pin connector?

Wed Jul 10, 2019 12:27 pm

Thanks for the pointer.

I have tested the Quattro with a single pi4 and it works fine - didnt know about not using 4.

Re-reading the quattro specs its says 4A peak (3A continuous) which i assume was per pi but looks like its shared across all 4 pi's. Seems low given that a pi3b or pi3b+ does not exactly sip power and it powers all usb and break out ports as well. Hmmmm.

shifters

Return to “General discussion”